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Census of

Manufactures

MC92-I-24D

INDUSTRY SERIES

Wood Buildings and

Mobile Homes

Industries 2451 and 2452

U.S. Department of Commerce

Economics and Statistics Administration

BUREAU OF THE CENSUS
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Census of

Manufactures

MC92-I-24D

INDUSTRY SERIES

Wood Buildings and

Mobile Homes

Industries 2451 and 2452

U.S. Department of Commerce

Ronald H. Brown, Secretary

David J. Barram, Deputy Secretary

Economics and Statistics Administration

Everett M. Ehrlich, Under Secretary

for Economic Affairs

BUREAU OF THE CENSUS

Martha Farnsworth Riche, Director

Issued December 1994
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Many persons participated in the various activities of the 1992 Census of Manufactures. The

overall planning and review of the census operations were performed by the Economic Census

Staff of the Economic Planning and Coordination Division.

Manufacturing and Construction Division prepared this report. David W. Cartwright, Assistant

Chief for Census and Related Programs, was responsible for the overall planning, management,

and coordination of the census of manufactures. Planning and implementation were under the

direction of Michael Zampogna, Chief, Wood and Chemical Products Branch, assisted by Allen

Foreman, Section Chief, with primary staff assistance by Jim Jamski.

Brian Greenberg, Assistant Chief for Research and Methodology Programs, assisted by

Stacey Cole, provided the mathematical and statistical techniques as well as the coverage

operations.

Baruti A. Taylor, under the direction of A. William Visnansky, Chief, Special Reports Branch,

performed overall coordination of the publication process. Julius Smith, Jr.and Andrew W. Hait

provided primary staff assistance.

The Economic Planning and Coordination Division provided the computer processing procedures. Shirin A. Ahmed, Assistant Chief for Post Data Collection Processing, was responsible for

editing and the analysts’ interactive database review and correction system. Design and

specifications were prepared under the supervision of Dennis L. Wagner, Chief, Post Collection

Census Branch, assisted by S. Mark Schmidt and Robert A. Rosati.

The staff of the Data Preparation Division, Judith N. Petty, Acting Chief, performed mailout

preparation and receipt operations, clerical and analytical review activities, data keying, and

geocoding review.

The Geography Division staff developed geographic coding procedures and associated

computer programs.

The Economic Statistical Methods and Programming Division, Charles P. Pautler, Jr., Chief,

developed and coordinated the computer processing systems. Martin S. Harahush, Assistant

Chief for Quinquennial Programs, was responsible for design and implementation of the computer

systems. Gary T. Sheridan, Chief, Manufactures and Construction Branch, assisted by Gerald S.

Turnage, supervised the preparation of the computer programs.

Computer Services Division, Marvin D. Raines, Chief, performed the computer processing.

The staff of the Administrative and Publications Services Division, Walter C. Odom, Chief,

performed publication planning, design, composition, editorial review, and printing planning and

procurement for publications and report forms. Cynthia G. Brooks provided publication coordination and editing.

Special acknowledgment is also due the many businesses whose cooperation has contributed

to the publication of these data.

If you have any questions concerning the statistics in this report, call 301-457-4810.

Acknowledgments
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MANUFACTURING AND CONSTRUCTION DIVISION

John P. Govoni, Acting Chief

BUREAU OF THE CENSUS

Martha Farnsworth Riche, Director

Harry A. Scarr, Deputy Director

Paula J. Schneider, Principal Associate

Director for Programs

Thomas L. Mesenbourg, Acting Associate

Director for Economic Programs

Thomas L. Mesenbourg, Assistant Director

for Economic Programs

ECONOMIC PLANNING AND COORDINATION

DIVISION

John P. Govoni, Chief

Economics and Statistics

Administration

Everett M. Ehrlich, Under Secretary

for Economic Affairs

For sale by Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
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Introduction to

the Economic Census

PURPOSES AND USES OF THE ECONOMIC

CENSUS

The economic census is the major source of facts about

the structure and functioning of the Nation’s economy. It

provides essential information for government, business,

industry, and the general public.

The economic census furnishes an important part of the

framework for such composite measures as the gross

domestic product, input/output measures, production and

price indexes, and other statistical series that measure

short-term changes in economic conditions.

Policymaking agencies of the Federal Government use

the data, especially in monitoring economic activity and

providing assistance to business.

State and local governments use the data to assess

business activities and tax bases within their jurisdictions

and to develop programs to attract business.

Trade associations study trends in their own and competing industries and keep their members informed of

market changes.

Individual businesses use the data to locate potential

markets and to analyze their own production and sales

performance relative to industry or area averages.

AUTHORITY AND SCOPE

Title 13 of the United States Code (sections 131, 191,

and 224) directs the Census Bureau to take the economic

census every 5 years, covering years ending in 2 and 7.

The 1992 Economic Census consists of the following eight

censuses:

• Census of Retail Trade

• Census of Wholesale Trade

• Census of Service Industries

• Census of Financial, Insurance, and Real Estate

Industries

• Census of Transportation, Communications, and Utilities

• Census of Manufactures

• Census of Mineral Industries

• Census of Construction Industries

Special programs also cover enterprise statistics and

minority-owned and women-owned businesses. (The 1992

Census of Agriculture and 1992 Census of Governments

are conducted separately.) The next economic census is

scheduled to be taken in 1998 covering the year 1997.

AVAILABILITY OF THE DATA

The results of the economic census are available in

printed reports for sale by the U.S. Government Printing

Office and on compact discs for sale by the Census

Bureau. Order forms for all types of products are available

on request from Customer Services, Bureau of the Census,

Washington, DC 20233-8300. A more complete description of publications being issued from this census is on the

inside back cover of this document.

Census facts are also widely disseminated by trade

associations, business journals, and newspapers. Volumes containing census statistics are available in most

major public and college libraries. Finally, State data

centers in every State as well as business and industry

data centers in many States also supply economic census

statistics.

WHAT’S NEW IN 1992

The 1992 Economic Census covers more of the economy

than any previous census. New for 1992 are data on

communications, utilities, financial, insurance, and real

estate, as well as coverage of more transportation industries. The economic, agriculture, and governments censuses now collectively cover nearly 98 percent of all

economic activity.

Among other changes, new 1992 definitions affect the

boundaries of about a third of all metropolitan areas. Also,

the Survey of Women-Owned Businesses has now been

expanded to include all corporations.

HISTORICAL INFORMATION

The economic census has been taken as an integrated

program at 5-year intervals since 1967 and before that for

1963, 1958, and 1954. Prior to that time, the individual

subcomponents of the economic census were taken separately at varying intervals.

MANUFACTURES—INDUSTRY SERIES INTRODUCTION III
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The economic census traces its beginnings to the 1810

Decennial Census, when questions on manufacturing were

included with those for population. Coverage of economic

activities was expanded for 1840 and subsequent censuses to include mining and some commercial activities. In

1902, Congress established a permanent Census Bureau

and directed that a census of manufactures be taken every

5 years. The 1905 Manufactures Census was the first time

a census was taken apart from the regular every-10-year

population census.

The first census of business was taken in 1930, covering 1929. Initially it covered retail and wholesale trade and

construction industries, but it was broadened in 1933 to

include some of the service trades.

The 1954 Economic Census was the first census to be

fully integrated—providing comparable census data across

economic sectors, using consistent time periods, concepts, definitions, classifications, and reporting units. It

was the first census to be taken by mail, using lists of firms

provided by the administrative records of other Federal

agencies. Since 1963, administrative records also have

been used to provide basic statistics for very small firms,

reducing or eliminating the need to send them census

questionnaires. The Enterprise Statistics Program, which

publishes combined data from the economic census, was

made possible with the implementation of the integrated

census program in 1954.

The range of industries covered in the economic censuses has continued to expand. The census of construction industries began on a regular basis in 1967, and the

scope of service industries was broadened in 1967, 1977,

and 1987. The census of transportation began in 1963 as

a set of surveys covering travel, transportation of commodities, and trucks, but expanded in 1987 to cover business

establishments in several transportation industries. For

1992, these statistics are incorporated into a broadened

census of transportation, communications, and utilities.

Also new for 1992 is the census of financial, insurance,

and real estate industries. This is part of a gradual expansion in coverage of industries previously subjected to

government regulation.

The Survey of Minority-Owned Business Enterprises

was first conducted as a special project in 1969 and was

incorporated into the economic census in 1972 along with

the Survey of Women-Owned Businesses.

An economic census has also been taken in Puerto

Rico since 1909, in the Virgin Islands of the United States

and Guam since 1958, and in the Commonwealth of the

Northern Mariana Islands since 1982.

Statistical reports from the 1987 and earlier censuses

provide historical figures for the study of long-term time

series and are available in some large libraries. All of the

census data published since 1967 are still available for

sale on microfiche from the Census Bureau.

AVAILABILITY OF MORE FREQUENT

ECONOMIC DATA

While the census provides complete enumerations every

5 years, there are many needs for more frequent data as

well. The Census Bureau conducts a number of monthly,

quarterly, and annual surveys, with the results appearing in

publication series such as Current Business Reports (retail

and wholesale trade and service industries), the Annual

Survey of Manufactures, Current Industrial Reports, and

the Quarterly Financial Report. Most of these surveys,

while providing more frequent observations, yield less

kind-of-business and geographic detail than the census.

The County Business Patterns program offers annual

statistics on the number of establishments, employment,

and payroll classified by industry within each county.

SOURCES FOR MORE INFORMATION

More information about the scope, coverage, classification system, data items, and publications for each of the

economic censuses and related surveys is published in the

Guide to the 1992 Economic Census and Related Statistics. More information on the methodology, procedures,

and history of the census will be published in the History of

the 1992 Economic Census. Contact Customer Services

for information on availability.

IV INTRODUCTION MANUFACTURES—INDUSTRY SERIES
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Census of Manufactures

GENERAL

This report, from the 1992 Census of Manufactures, is

one of a series of 83 industry reports, each of which

provides statistics for individual industries or groups of

related industries. Additional separate reports will be issued

for each State and the District of Columbia and for special

subjects such as manufacturers’ shipments to the federal

government and concentration ratios in manufacturing.

The industry reports include such statistics as number

of establishments, employment, payroll, value added by

manufacture, cost of materials consumed, capital expenditures, product shipments, etc.

State reports present similar statistics for each State

and its important metropolitan areas (MA’s), counties, and

places. Selected statistical totals for ‘‘all manufacturing’’

have been shown in the State reports for MA’s with 250

employees or more and for counties and places with 500

employees or more.

The General Summary report contains industry, product

class, and geographic area statistics summarized in one

report. The introduction to the General Summary discusses, at greater length, many of the subjects described

in this introduction. For example, the General Summary

text discusses the relationship of value added by manufacture to national income by industry of origin, the changes

in statistical concepts over the history of the censuses,

and the valuation problems arising from intracompany

transfers between manufacturing plants of a company and

between manufacturing plants and sales offices and sales

branches of a company.

SCOPE OF CENSUS AND DEFINITION OF

MANUFACTURING

The 1992 Census of Manufactures covers all establishments with one paid employee or more primarily engaged

in manufacturing as defined in the 1987 Standard Industrial

Classification (SIC) Manual1 This is the system of industrial

classification developed by experts on classification in

Government and private industry under the guidance of the

Office of Information and Regulatory Affairs, Office of

Management and Budget. This classification system is

used by Government agencies as well as many organizations outside the Government.

The SIC Manual defines manufacturing as the mechanical or chemical transformation of substances or materials

into new products. The assembly of component parts of

products also is considered to be manufacturing if the

resulting product is neither a structure nor other fixed

improvement. These activities are usually carried on in

plants, factories, or mills that characteristically use powerdriven machines and materials-handling equipment.

Manufacturing production is usually carried on for the

wholesale market, for transfers to other plants of the same

company, or to the order of industrial users rather than for

direct sale to the household consumer. Some manufacturers in a few industries sell chiefly at retail to household

consumers through the mail, through house-to-house routes,

or through salespersons. Some activities of a service

nature (enameling, engraving, etc.) are included in manufacturing when they are performed primarily for trade. They

are considered nonmanufacturing when they are performed primarily to the order of the household consumer.

RELATIONSHIP BETWEEN ANNUAL SURVEY OF

MANUFACTURES AND CENSUS OF

MANUFACTURES

The Bureau of the Census conducts the annual survey

of manufactures (ASM) in each of the 4 years between the

censuses of manufactures. The ASM is a probability-based

sample of approximately 62,000 establishments and collects the same industry statistics (employment, payroll,

value of shipments, etc.) as the census of manufactures. In

addition to collecting the information normally requested

on the census form, the establishments in the ASM sample

are requested to supply information on assets, capital

expenditures, retirements, depreciation, rental payments,

supplemental labor costs, costs of purchased services,

and foreign content of materials consumed. Except for

supplemental labor costs, the extra ASM items are collected only in census years.

ESTABLISHMENT BASIS OF REPORTING

The census of manufactures is conducted on an establishment basis. A company operating at more than one

location is required to file a separate report for each

1

Standard Industrial Classification Manual: 1987. For sale by Superintendent of Documents, U.S. Government Printing Office, Washington,

DC 20402. Stock No. 041-001-00314-2.

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location. The ASM also is conducted on an establishment

basis, but separate reports are filed for just those establishments selected in the sample. Companies engaged in

distinctly different lines of activity at one location are

requested to submit separate reports if the plant records

permit such a separation and if the activities are substantial in size.

In 1992, as in earlier years, a minimum size limit was set

for inclusion of establishments in the census. All establishments employing one person or more at any time during

the census year are included. The same size limitation has

applied since 1947 in censuses and annual surveys of

manufactures. In the 1939 and earlier censuses, establishments with less than $5,000 value of products were

excluded. The change in the minimum size limit in 1947

does not appreciably affect the historical comparability of

the census figures except for data on number of establishments for a few industries. This report excludes information for separately operated administrative offices, warehouses, garages, and other auxiliary units that service

manufacturing establishments of the same company (see

Auxiliaries).

MANUFACTURING UNIVERSE AND CENSUS

REPORT FORMS

The 1992 Census of Manufactures universe includes

approximately 380,000 establishments. The amounts of

information requested from manufacturing establishments

were dependent upon a number of factors. The more

important considerations were the size of the company

and whether it was included in the annual survey of

manufactures. The methods of obtaining information for

the various subsets of the universe to arrive at the aggregate figures shown in the publication are described below:

1. Small single-establishment companies not sent a

report form. In the 1992 Census of Manufactures,

approximately 143,000 small single-establishment companies were excused from filing reports. Selection of

these small establishments was done on an industryby-industry basis and was based on annual payroll and

total shipments data as well as on the industry classification codes contained in the administrative records

of Federal agencies. The cutoffs were selected so that

these administrative-records cases would account for

no more than 3 percent of the value of shipments for

all manufacturing. Generally, all single-establishment

companies with less than 5 employees were excused,

while all establishments with more than 20 employees

were mailed forms.

Information on the physical location of the establishment, as well as information on payrolls, receipts

(shipments), and industry classification, was obtained

from the administrative records of other Federal agencies under special arrangements, which safeguarded

their confidentiality. Estimates of data for these small

establishments were developed using industry averages in conjunction with the administrative information. The value of shipments and cost of materials

were not distributed among specific products and

materials for these establishments but were included

in the product and material ‘‘not specified by kind’’

(n.s.k.) categories.

The industry classification codes included in the

administrative-records files were assigned on the basis

of brief descriptions of the general activity of the

establishment. As a result, an indeterminate number of

establishments were erroneously coded at the fourdigit SIC level. This was especially true whenever there

was a relatively fine line of demarcation between

industries or between manufacturing and nonmanufacturing activity.

Sometimes these administrative-records cases were

only given a two- or three-digit SIC group. For the 1992

Census of Manufactures, these establishments were

sent a separate classification form, which requested

information on the products and services of the establishment. This form was used to code many of these

establishments to the four-digit SIC level. Establishments that did not return the classification form were

coded later to those four-digit SIC industries identified

as ‘‘not elsewhere classified’’ (n.e.c.) within the given

two- or three-digit industry groups.

As a result of these situations, a number of small

establishments may have been misclassified by industry. However, such possible misclassification has no

significant effect on the statistics other than on the

number of companies and establishments.

The total establishment count for individual industries should be viewed as an approximation rather than

a precise measurement. The counts for establishments with 20 employees or more are far more reliable

than the count of total number of establishments.

2. Establishments sent a report form. The over

237,000 establishments covered in the mail canvass

were divided into three groups:

a. ASM sample establishments. This group consisted of approximately 62,000 establishments covering all the units of large manufacturing establishments as well as a sample of the medium and

smaller establishments. The probability of selection

was proportionate to size (see Appendix B, Annual

Survey of Manufactures).

In a census of manufactures year, the ASM

report form (MA-1000) replaces the first page of the

regular census form for those establishments included

in the ASM. In addition to information on employment, payroll, and other items normally requested

on the regular census form, establishments in the

ASM sample were requested to supply information

on assets, capital expenditures, retirements, depreciation, rental payments, supplemental labor costs,

and costs of purchased services. See appendix A,

section 2, for an explanation of these items.

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The census part of the report form is 1 of

approximately 200 versions containing product, material, and special inquiries. The diversity of manufacturing activities necessitated the use of these many

forms to canvass the 459 manufacturing industries.

Each form was developed for a group of related

industries.

Appearing on each form was a list of products

primary to the group of related industries as well as

secondary products and miscellaneous services

that establishments classified in these industries

were likely to be performing. Respondents were

requested to identify the products, the value of

each product, and, in a large number of cases, the

quantity of the product shipped during the survey

year. Space also was provided for the respondent

to describe products not specifically identified on

the form.

The report form also contained a materialsconsumed inquiry, which varied from form to form

depending on the industries being canvassed. The

respondents were asked to review a list of materials

generally used in their production processes. From

this list, each establishment was requested to identify those materials consumed during the survey

year, the cost of each, and, in certain cases, the

quantity consumed. Once again, space was provided for the respondent to describe significant

material not identified on the form.

Finally, a wide variety of special inquiries was

included to measure activities peculiar to a given

industry, such as operations performed and equipment used.

b. Large and medium establishments (nonASM). Approximately 112,000 establishments were

included in this group. A variable cutoff, based on

administrative-records payroll data and determined

on an industry-by-industry basis, was used to select

those establishments that were to receive 1 of the

approximately 200 census of manufactures regular

forms. The first page, requesting establishment

data for items such as employment and payroll, was

standard but did not contain the detailed statistics

included on the ASM form. The product, material,

and special inquiry sections supplied were based

on the historical industry classification of the establishment.

c. Small single-establishment companies (non-ASM).

This group consisted of approximately 63,000 establishments. For those industries where application of

the variable cutoff for administrative-records cases

resulted in a large number of small establishments

being included in the mail canvass, an abbreviated

or ‘‘short’’ form was used. These establishments

received 1 of the approximately 80 versions of the

short form, which requested summary product and

material data and totals but no details on employment, payrolls, cost of materials, inventories, and

capital expenditures.

Use of the short form has no adverse effect on published totals for the industry statistics; the same data were

collected on the short form as on the long form. However,

detailed information on materials consumed was not collected on the short form; thus its use would increase the

value of the n.s.k. categories.

AUXILIARIES

In this industry report, the data on employment and

payroll are limited to operating manufacturing establishments. The census report form filed for auxiliaries

(ES-9200) requested a description of the activity of the

establishments serviced. However, the manufacturing auxiliaries were coded only to the two-digit major group of the

establishments they served; whereas, the operating establishments were coded to a four-digit manufacturing industry. Data for the approximately 11,000 separately operated

auxiliaries are included in the geographic area series and in

a report issued as part of the 1992 Enterprise Statistics

Survey.

Auxiliaries are establishments whose employees are

primarily engaged in performing supporting services for

other establishments of the same company, rather than for

the general public or for other business firms. They can be

at different locations from the establishments served or at

the same location as one of those establishments but not

operating as an integral part thereof and serving two

establishments or more. Where auxiliary operations are

conducted at the same location as the manufacturing

operation and operate as an integral part thereof, they

usually are included in the report for the operating manufacturing establishment.

Included in the broad category of auxiliaries are administrative offices. Employees in administrative offices are

concerned with the general management of multiestablishment companies, i.e., with the general supervision and

control of two units or more, such as manufacturing plants,

mines, sales branches, or stores. The functions of these

employees may include the following:

1. Program planning, including sales research and coordination of purchasing, production, and distribution

2. Company purchasing, including general contracts and

purchasing methods

3. Company financial policy and accounting

4. General engineering, including design of product machinery and equipment, and direction of engineering effort

conducted at the individual operation locations

5. Company personnel matters

6. Legal and patent matters

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Other types of auxiliaries serving the plants or central

management of the company include purchasing offices,

sales promotion offices, research and development organizations, etc.

INDUSTRY CLASSIFICATION OF ESTABLISHMENTS

Each of the establishments covered in the census was

classified in 1 of 459 manufacturing industries in accordance with the industry definitions in the 1987 SIC Manual.

The 1987 edition of this manual represents a major

revision for manufacturing industries from the 1972 edition

and its 1977 supplement. Appendix A of the 1987 Manual

notes the revisions in the four-digit industry levels between

1972/77 and 1987.

An industry is generally defined as a group of establishments producing the same product or a closely related

group of products. The product groupings from which

industry classifications are derived are based on considerations such as similarity of manufacturing processes, types

of materials used, types of customers, and the like. The

resulting group of establishments must be significant in

terms of number, value added by manufacture, value of

shipments, and number of employees. The system operates in such a way that the definitions progressively

become narrower with successive additions of numerical

digits. For 1992, there are 20 major groups (two-digit SIC),

139 industry groups (three-digit SIC), and 459 industries

(four-digit SIC). This represents an expansion of four-digit

industries from 452 in 1972/77 and a reduction of threedigit groups from 143 in 1972/77. Product classes and

products of the manufacturing industries have been assigned

codes based on the industry from which they originate.

There are about 11,000 products identified by a seven-digit

code. The seven-digit products are considered the primary

products of the industry with the same four digits.

Accordingly, an establishment is usually classified in a

particular industry on the basis of its major activity during a

particular year, i.e., production of the products primary to

that industry exceeds, in value, production of the products

primary to any other single industry. In a few instances,

however, the industry classification of an establishment is

not only determined by the products it makes but also by

the process employed in operations. Refining of nonferrous metals from ore or rolling and drawing of nonferrous

metals (processes which involve heavy capitalization in

specialized equipment) would be classified according to

the process used during a census year. These establishments then would be ‘‘frozen’’ in that industry during the

following ASM years.

In either a census or ASM year, establishments included

in the ASM sample with certainty weight, other than those

involved with heavily capitalized activities described above,

are reclassified by industry only if the change in the primary

activity from the prior year is significant or if the change has

occurred for 2 successive years. This procedure prevents

reclassification when there are minor shifts in product mix.

In ASM years, establishments included in the ASM

sample with noncertainty weight are not shifted from one

industry classification to another. They are retained in the

industry where they were classified in the base census

year (see Appendix B, Annual Survey of Manufactures).

However, in the following census year, these ASM plants

are allowed to shift from one industry to another.

The results of these rules covering the switching of

plants from one industry classification to another are that,

at the aggregate level, some industries comprise different

mixes of establishments between survey years and establishment data for such industry statistics as employment

and payroll may be tabulated in different industries between

survey years. Hence, comparisons between prior-year and

current-year published totals, particularly at the four-digit

SIC level, should be viewed with caution. This is particularly true for the comparison between the data shown for a

census year versus the data shown for the previous ASM

year.

As previously noted, the small establishments that may

have been misclassified by industry are usually administrativerecords cases whose industry codes were assigned on the

basis of incomplete descriptions of the general activity of

the establishment. Such possible misclassifications have

no significant effect on the statistics other than on the

number of companies and establishments.

While some establishments produce only the primary

products of the industry in which they are classified, all

establishments of an industry rarely specialize to this

extent. The industry statistics (employment, inventories,

value added by manufacture, total value of shipments

including resales and miscellaneous receipts, etc.) shown

in tables 1a through 5a, therefore, reflect not only the

primary activities of the establishments in that industry but

also their secondary activities. The product statistics in

table 6a represent the output of all establishments whether

or not they are classified in the same industry as the

product. For this reason, in relating the industry statistics,

especially the value of shipments to the product statistics,

the composition of the industry’s output shown in table 5b

should be considered.

The extent to which industry and product statistics may

be matched with each other is measured by two ratios

which are computed from the figures shown in table 5b.

The first of these ratios, called the primary product specialization ratio, measures the proportion of product shipments (both primary and secondary) of the establishments

classified in the industry represented by the primary products of those establishments. The second ratio, called the

coverage ratio, is the proportion of primary products shipped

by the establishments classified in the industry to total

shipments of such products by all manufacturing establishments.

However, establishments making products falling into

the same industry category may use a variety of processes

and materials to produce them. Also, the same industry

classification (based on end products) may include both

establishments that are highly integrated and those that

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put only the finishing touches on an already highly fabricated item. For example, the refrigeration equipment industry includes instances of almost complete integration (production of the compressor, condensing unit, electric motor,

casting, stamping of the case, and final assembly) all

carried on at one plant. On the other hand, the condensing

unit, the motor, and the case may be purchased and only

assembled into the finished product.

In some instances, separate industry categories have

been established for integrated and nonintegrated establishments. For other industries, the census provides separate statistics on the production of intermediate commodities made and used in the producing plant. For some

industries characterized by many plants of the same

company, separate figures on interplant transfers of products usually are shown.

Differences in the integration of production processes,

types of operations, and alternatives in types of materials

used should be considered when relating the industry

statistics (employment, payrolls, value added, etc.) to the

product and material data.

VALUE OF SHIPMENTS FOR THE INDUSTRY

COMPARED WITH VALUE OF PRODUCT

SHIPMENTS

This report shows value of shipments data for industries

and products. In tables 1a through 5b, these data represent the total value of shipments of all establishments

classified in a particular industry. The data include the

shipments of the products classified in the industry (primary to the industry), products classified in other industries

(secondary to the industry), and miscellaneous receipts

(repair work, sale of scrap, research and development,

installation receipts, and resales). Value of product shipments shown in table 6a represents the total value of all

products shipped that are classified as primary to an

industry.

CENSUS DISCLOSURE RULES

In accordance with Federal law governing census reports,

no data are published that would disclose the data for an

individual establishment or company. However, the number of establishments classified in a specific industry is not

considered a disclosure, so this information may be released

even though other information is withheld.

The disclosure analysis for the industry statistics in

tables 1a through 5a of this report is based on the total

value of shipments. When the total value of shipments

cannot be shown without disclosing information for individual companies, the complete line is suppressed except

for new capital expenditures. However, the suppressed

data are included in higher-level totals. A separate disclosure analysis is performed for new capital expenditures

that can be suppressed even though value of shipments

data are publishable.

SPECIAL TABULATIONS

Special tabulations of data collected in the 1992 Census

of Manufactures may be obtained on computer diskette or

in tabular form. The data will be in summary form and

subject to the same rules prohibiting disclosure of confidential information (including name, address, kind of business, or other data for individual business establishments

or companies) as are the regular publications.

Special tabulations are prepared on a cost basis. A

request for a cost estimate, as well as exact specifications

on the type and format of the data to be provided, should

be directed to the Chief, Industry Division, Bureau of the

Census, Washington, DC 20233.

ABBREVIATIONS AND SYMBOLS

The following abbreviations and symbols are used in

this publication:

– Represents zero.

(D) Withheld to avoid disclosing data for individual

companies; data are included in higher level

totals.

(NA) Not available.

(NC) Not comparable.

(S) Withheld because estimate did not meet publication standards.

(X) Not applicable.

(Z) Less than half the unit shown.

n.e.c. Not elsewhere classified.

n.s.k. Not specified by kind.

pt. Part.

r Revised.

SIC Standard Industrial Classification.

Other abbreviations, such as lb, gal, yd, doz, bbl, and

s tons, are used in the customary sense.

CONTACTS FOR DATA USERS

Subject Area Contact Phone

Census, ASM, and

CIR

SIC’s 20-23,

3021, 31

Judy Dodds 301-457-4651

SIC’s 24-30

(exc. 3021), 32

Michael Zampogna 301-457-4810

SIC’s 33-35

(exc. 357)

Kenneth Hansen 301-457-4755

SIC’s 357, 36-39 Bruce Goldhirsch 301-457-4817

Import/export Foreign Trade 301-457-3041

publications Division

Industry analysis International 202-377-4356

and forecasting Trade

Administration

MANUFACTURES—INDUSTRY SERIES CENSUS OF MANUFACTURES IX
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Users’ Guide for Locating Statistics in This Report

by Table Number

For explanation of terms, see appendixes

Item

Four-digit industry statistics Five-digit product class and

seven-digit product statistics

Historical

Operating

ratios

By

geographic

area

Summary

and

supplemental

By

employment

size

By

industry

and

product

class

specialization

Materials

consumed

by kind

Industryproduct

analysis

Product

shipments

Product

class by

geographic

area

Historical

product

class

Number of companies . . . . . . . . 1a 3a *6a

Number of establishments. . . . 1a 2 3a 4 5a

Employment and payroll: . . . . . .

Number of employees . . . . . . 1a 1b 2 3a 4 5a

Payroll . . . . . . . . . . . . . . . . . . . . 1a 1b 2 3a 4 5a

Supplemental labor costs . . . 3a

Production workers . . . . . . . . . 1a 1b 2 3a 4 5a

Production- worker hours. . . . 1a 1b 2 3a 4 5a

Production- worker wages . . . 1a 1b 2 3a 4 5a

Shipments, cost of materials,

and value added:

Value of shipments

(four-digit) . . . . . . . . . . . . . . . . 1a 1b 2 3a 4 5a 5b

Product class shipments

(five-digits) . . . . . . . . . . . . . . . 6a 6b 6c

Product shipments

(seven-digit) . . . . . . . . . . . . . . 6a

Value added by

manufacture . . . . . . . . . . . . . . 1a 1b 2 3a 4 5a

Cost of materials . . . . . . . . . . . 1a 1b 2 3a 4 5a

Fuels and electric energy . . . 3a

Materials consumed by kind . 7

Inventories:

Total, end of year . . . . . . . . . . 1a 3a 4

By stage of fabrication . . . . . . 3a

Capital expenditures, assets,

rental payments, and

purchased services:

New capital expenditures. . . . 1a 2 3b 4 5a

Used plant and equipment

expenditures. . . . . . . . . . . . . . 3b

Gross assets . . . . . . . . . . . . . . 3b

Depreciation . . . . . . . . . . . . . . . 3b

Retirements of buildings and

machinery . . . . . . . . . . . . . . . . 3b

Rental payments . . . . . . . . . . . 3b

Foreign content of materials

consumed . . . . . . . . . . . . . . . . 3c

Purchased services. . . . . . . . . 3c

Ratios:

Specialization . . . . . . . . . . . . . 1a 5b

Coverage. . . . . . . . . . . . . . . . . 1a 5b

*Number of companies with shipments of more than $100 thousand.

X USERS’ GUIDE MANUFACTURES—INDUSTRY SERIES
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Contents

Wood Buildings and Mobile Homes

[Page numbers listed here omit the prefix that

appears as part of the number of each page]

Page

Introduction to the Economic Census III ...............................................

Census of Manufactures V ..........................................................

Users’ Guide for Locating Statistics in This Report by Table Number X ..................

Description of Industries and Summary of Findings 3 ..................................

TABLES

Industry Statistics

1a. Historical Statistics for the Industry: 1992 and Earlier Years 5 ....................

1b. Selected Operating Ratios for the Industry: 1992 and Earlier Years 5 .............

2. Industry Statistics for Selected States: 1992 and 1987 6 ........................

3a. Summary Statistics for the Industry: 1992 8 ....................................

3b. Gross Book Value of Depreciable Assets, Capital Expenditures, Retirements,

Depreciation, and Rental Payments: 1992 8 ...................................

3c. Supplemental Industry Statistics Based on Sample Estimates: 1992 8 ............

4. Industry Statistics by Employment Size of Establishment: 1992 9 .................

5a. Industry Statistics by Industry and Primary Product Class Specialization: 1992 10 ...

Product Statistics

5b. Industry–Product AnalysismValue of Industry and Primary Product Shipments;

Specialization and Coverage Ratios: 1992 and Earlier Census Years 10 ...........

6a. Product and Product Classes mQuantity and Value of Shipments by All Producers:

1992 and 1987 11 ............................................................

6b. Product ClassesmValue of Shipments by All Producers for Specified States:

1992 and 1987 12 ............................................................

6c. Historical Statistics for Product Classes mValue Shipped by All Producers: 1992

and Earlier Years 12 ..........................................................

Material Statistics

7. Materials Consumed by Kind: 1992 and 1987 13 ................................

APPENDIXES

A. Explanation of Terms A–1 .......................................................

B. Annual Survey of Manufactures Sampling and Estimating Methodologies B–1 .........

C. Product Code Reference Tables C–1 .............................................

Publication Program Inside back cover ...................................................

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Description of Industries and

Summary of Findings

This report shows 1992 Census of Manufactures statistics for establishments classified in each of the following

industries:

SIC code and title

2451 Mobile Homes

2452 Prefabricated Wood Buildings

The industry statistics (employment, payroll, cost of

materials, value of shipments, inventories, etc.) are reported

for each establishment as a whole. Aggregates of such

data for an industry reflect not only the primary activities of

the establishments but also their activities in the manufacture of secondary products as well as their miscellaneous

activities (contract work on materials owned by others,

repair work, etc.). This fact should be taken into account in

comparing industry statistics (tables 1 through 5a) with

product statistics (table 6) showing shipments by all industries of the primary products of the specified industry. The

extent of the ‘‘product mix’’ is indicated in table 5b, which

shows the value of primary and secondary products shipped

by establishments classified in the specified industry and

the value of primary products of the industry shipped as

secondary products by establishments classified in other

industries.

Establishment data were tabulated based on industry

definitions included in the 1987 Standard Industrial Classification (SIC) Manual1. The 1987 edition represents a

major revision for manufacturing industries from the 1972

edition and its 1977 supplement. In addition to the 1987

SIC revision, changes were made to the product class

(five-digit) and product code (seven-digit) categories. Comparability for the product classes and product codes that

changed between the 1992 and 1987 censuses is shown

in appendix C. This appendix presents, in tabular form, the

linkage from 1992 to 1987, and 1987 to 1992.

All dollar figures included in this report are at prices

current for the year specified and, therefore, unadjusted for

changes in price levels. Consequently, when making comparisons to prior years, users should take into consideration the inflation that has occurred.

INDUSTRY 2451, MOBILE HOMES

This industry is made up of establishments primarily

engaged in the manufacture of mobile homes and nonresidential mobile buildings. These units are generally more

than 35 feet long, at least 8 feet wide, do not have facilities

for storage of water or waste, and are equipped with

wheels. Establishments primarily engaged in the manufacture of trailers that are generally 35 feet long or less, 8 feet

wide or less, and with self-contained facilities are classified

in industry 3792. Establishments primarily engaged in the

manufacture of portable wood buildings not equipped with

wheels are classified in industry 2452.

The 1992 definition of this industry is the same as that

used in the 1987 Standard Industrial Classification (SIC)

system. The SIC number and title also are the same.

In the 1992 Census of Manufactures, Industry 2451,

Mobile Homes, had employment of 37.0 thousand. The

employment figure was 7 percent below the 39.9 thousand

reported in 1987.

The leading States in employment in 1992 were Indiana,

Alabama, Georgia, and North Carolina, accounting for

approximately 43 percent of the industry’s employment.

This represents a shift from 1987 when Georgia, Indiana,

North Carolina, and Florida accounted for approximately

45 percent of the industry’s employment.

The total value of shipments for establishments classified in this industry was $4.5 billion.

Establishments in virtually all industries ship secondary

products as well as products primary to the industry in

which they are classified and have some miscellaneous

receipts, such as resales and contract receipts.

The products primary to industry 2451, no matter in

what industry they were produced, appear in table 6a and

aggregate to $4.5 billion. For an explanation of specialization and coverage ratios, see table 5b and the appendixes.

The total cost of materials, services, and fuels and

energy used by establishments classified in the mobile

homes industry amounted to $2.9 billion. Data on specific

materials consumed appear in table 7.

Single-establishment companies in this industry with

less than 5 employees were excluded from the mail portion

of the census. The data for these establishments (and a

small number of larger establishments whose reports were

not received at the time the data were tabulated) were

1

Standard Industrial Classification Manual: 1987. For sale by Superintendent of Documents, U.S. Government Printing Office, Washington,

DC 20402. Stock No. 041-001-00314-2.

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obtained from administrative records of other agencies or

developed from industry averages. These establishments

accounted for 9 percent of the total value of shipments.

INDUSTRY 2452, PREFABRICATED WOOD

BUILDINGS

This industry is made up of establishments primarily

engaged in the manufacture of prefabricated wood buildings, sections, and panels. Establishments primarily engaged

in the fabrication of buildings on the site of construction are

classified in Division C, Construction. Establishments primarily engaged in the manufacture of fabricated structural

wood products are classified in industry 2439.

The 1992 definition of this industry is the same as that

used in the 1987 Standard Industrial Classification (SIC)

system. The SIC number and title also are the same.

In the 1992 Census of Manufactures, Industry 2452,

Prefabricated Wood Buildings, had employment of 19.0

thousand. The employment figure was 25 percent below

the 25.4 thousand reported in 1987.

The leading States in employment in 1992 were Pennsylvania, Wisconsin, Virginia, and Indiana, accounting for

approximately 37 percent of the industry’s employment.

This represents a shift from 1987 when Pennsylvania,

Virginia, Florida, and Wisconsin accounted for approximately 34 percent of the industry’s employment.

The total value of shipments for establishments classified in this industry was $2.1 billion.

Establishments in virtually all industries ship secondary

products as well as products primary to the industry in

which they are classified and have some miscellaneous

receipts, such as resales and contract receipts. Industry

2452 shipped $2.0 billion of prefabricated wood buildings

considered primary to the industry, $35.2 million of secondary products, and had $62.4 million of miscellaneous

receipts, resales, and contract work. Thus, the ratio of

primary products to the total of both secondary and

primary products shipped by establishments in this industry was 98 percent (specialization ratio). In 1987, the

specialization ratio was 95 percent.

Establishments in this industry also accounted for 95

percent of products considered primary to the industry no

matter where they were actually produced (coverage ratio).

In 1987, the coverage ratio was 98 percent.

The products primary to industry 2452, no matter in

what industry they were produced, appear in table 6a and

aggregate to $2.1 billion. For further explanation of specialization and coverage ratios, see table 5b and the

appendixes.

The total cost of materials, services, and fuels and

energy used by establishments classified in the prefabricated wood buildings industry amounted to $1.2 billion.

Data on specific materials consumed appear in table 7.

Single-establishment companies in this industry with

less than 5 employees were excluded from the mail portion

of the census. The data for these establishments (and a

small number of larger establishments whose reports were

not received at the time the data were tabulated) were

obtained from administrative records of other agencies or

developed from industry averages. These establishments

accounted for 17 percent of the total value of shipments.

24D–4 WOOD BUILDINGS AND MOBILE HOMES MANUFACTURES—INDUSTRY SERIES
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Table 1a. Historical Statistics for the Industry: 1992 and Earlier Years

[Excludes data for auxiliaries. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Year1

All establishments 3 All employees Production workers Ratios

Companies2

(no.)

Total

(no.)

With 20

employees or

more

(no.)

Number

(1,000)

Payroll

(million

dollars)

Number

(1,000)

Hours (millions)

Wages

(million

dollars)

Value added

by manufac- ture4

(million

dollars)

Cost of materials5

(million

dollars)

Value of

shipments

(million

dollars)

New

capital

expenditures6

(million

dollars)

End-of- year

inventories4

(million

dollars)

Speciali- zation7

(percent)

Coverage8

(percent)

INDUSTRY 2451, MOBILE HOMES

1992 Census 155 --- 286 239 37.0 813.2 30.9 61.5 578.3 1 644.5 2 891.2 4 531.8 51.1 225.7 (D) (D)

1991 ASM (NA) ------ (NA) (NA) 35.1 713.7 28.7 55.0 489.9 1 381.8 2 555.0 3 930.2 16.9 221.7 (NA) (NA)

1990 ASM (NA) ------ (NA) (NA) 38.8 769.1 31.7 59.7 530.0 1 501.6 2 697.5 4 202.5 26.6 224.5 (NA) (NA)

1989 ASM (NA) ------ (NA) (NA) 39.9 768.7 32.7 62.4 537.1 1 437.3 2 683.4 4 127.8 25.4 224.7 (NA) (NA)

1988 ASM (NA) ------ (NA) (NA) 40.8 772.5 33.4 63.3 533.1 1 493.3 2 734.7 4 222.4 51.0 229.8 (NA) (NA)

1987 Census 207 --- 395 315 39.9 741.2 32.4 62.4 511.1 1 466.0 2 639.9 4 102.4 42.8 217.7 99 100

1986 ASM (NA) ------ (NA) (NA) 41.8 735.4 34.1 64.3 496.2 1 400.1 2 636.1 4 053.4 67.9 211.7 (NA) (NA)

1985 ASM (NA) ------ (NA) (NA) 44.3 764.0 36.2 68.7 527.8 1 465.5 2 783.8 4 236.5 68.5 248.4 (NA) (NA)

1984 ASM (NA) ------ (NA) (NA) 46.8 759.4 38.6 71.9 531.7 1 440.3 2 875.2 4 311.8 66.9 230.8 (NA) (NA)

1983 ASM (NA) ------ (NA) (NA) 51.9 820.8 42.7 82.1 596.0 1 582.7 3 219.1 4 785.2 67.6 242.2 (NA) (NA)

1982 Census 261 --- 516 406 42.8 622.4 34.6 63.9 430.3 1 187.4 2 410.1 3 606.4 47.7 194.5 99 99 1981 ASM (NA) ------ (NA) (NA) 46.4 681.0 37.2 65.6 457.8 1 283.8 2 699.4 3 979.4 44.4 227.1 (NA) (NA)

1980 ASM (NA) ------ (NA) (NA) 46.3 620.9 37.0 65.2 426.2 1 142.0 2 364.8 3 506.4 56.4 231.6 (NA) (NA)

1979 ASM (NA) ------ (NA) (NA) 51.8 666.3 42.6 80.0 469.7 1 328.8 2 739.7 4 071.2 50.1 228.2 (NA) (NA)

1978 ASM (NA) ------ (NA) (NA) 54.6 616.0 44.9 85.1 434.8 1 205.8 2 554.8 3 756.7 38.1 215.6 (NA) (NA)

1977 Census 306 --- 597 465 50.5 527.6 41.8 80.5 371.8 1 030.5 2 175.3 3 199.3 69.8 193.3 99 99

INDUSTRY 2452, PREFABRICATED WOOD BUILDINGS

1992 Census 561 --- 655 224 19.0 414.1 13.4 25.1 242.0 847.4 1 206.8 2 055.6 24.2 206.9 98 95

1991 ASM (NA) ------ (NA) (NA) 19.0 392.0 13.6 25.1 235.2 791.2 1 229.1 2 021.4 23.5 264.9 (NA) (NA)

1990 ASM (NA) ------ (NA) (NA) 22.6 448.0 16.0 29.2 264.2 863.2 1 393.9 2 268.5 32.7 252.8 (NA) (NA)

1989 ASM (NA) ------ (NA) (NA) 22.9 441.9 16.5 30.4 268.2 897.2 1 410.1 2 297.2 41.9 265.8 (NA) (NA)

1988 ASM (NA) ------ (NA) (NA) 25.2 478.7 18.2 35.8 283.0 969.9 1 433.5 2 404.8 21.9 251.9 (NA) (NA)

1987 Census 604 --- 689 262 25.4 473.4 18.5 34.9 278.1 1 023.0 1 457.2 2 472.2 57.5 255.3 95 98

1986 ASM (NA) ------ (NA) (NA) 20.3 361.5 14.3 27.8 209.2 777.2 1 207.7 1 987.0 34.6 208.6 (NA) (NA)

1985 ASM (NA) ------ (NA) (NA) 18.7 324.1 13.1 23.7 180.7 701.2 1 013.0 1 714.2 35.6 199.3 (NA) (NA)

1984 ASM (NA) ------ (NA) (NA) 20.2 325.1 14.3 26.7 181.7 670.1 1 031.1 1 698.2 33.3 217.3 (NA) (NA)

1983 ASM (NA) ------ (NA) (NA) 18.2 290.9 12.6 23.6 158.8 624.1 915.6 1 532.2 20.2 194.6 (NA) (NA)

1982 Census 598 --- 647 206 16.8 257.8 11.4 20.8 143.2 553.4 794.0 1 349.0 17.4 175.1 97 99 1981 ASM (NA) ------ (NA) (NA) 19.4 292.5 12.6 22.9 154.7 646.9 953.0 1 613.3 20.9 172.8 (NA) (NA)

1980 ASM (NA) ------ (NA) (NA) 22.0 315.7 14.7 26.6 168.7 682.8 1 068.2 1 757.0 28.8 197.6 (NA) (NA)

1979 ASM (NA) ------ (NA) (NA) 29.5 379.2 21.1 37.2 218.1 811.7 1 349.9 2 161.2 38.1 236.1 (NA) (NA)

1978 ASM (NA) ------ (NA) (NA) 30.8 382.7 22.4 41.9 228.7 885.7 1 375.1 2 266.1 63.3 243.3 (NA) (NA)

1977 Census 510 --- 568 287 29.0 330.6 21.2 40.6 204.4 758.6 1 207.1 1 948.6 40.2 229.1 98 98

1In annual survey of manufactures (ASM) years, data are estimates based on a representative sample of establishments canvassed annually and may differ from results of a complete

canvass of all establishments. ASM publication shows percentage standard errors. Unless otherwise noted, for data prior to 1977, see 1977 Census of Manufactures, vol. II, table 1 of the industry

chapter. 2For the Census, a company is defined as a business organization consisting of one establishment or more under common ownership or control.

3Includes establishments with payroll at any time during the year.

4Beginning in 1982, all respondents were requested to report their inventories at cost or market prior to adjustment to LIFO cost. This is a change from prior years when respondents were

permitted to value their inventories using any generally accepted accounting method. Consequently, 1982 data for inventories and value added by manufacture are not comparable to prior-year data. 5Cost of materials is the sum of five components: the cost of (1) parts used in the manufacture of finished goods (materials, parts, containers, and supplies incorporated into products or

otherwise directly consumed in the process); (2) purchased items later resold without further manufacture; (3) fuels; (4) electricity; and (5) commissions or fees to outside parties for contract

manufacturing. A separate cost for each of the five components is shown in table 3a. Detailed data on materials consumed by type, are shown in table 7. 6Detailed data on new machinery and equipment expenditures are provided in table 3c.

7Represents ratio of primary product shipments to total product shipments (primary and secondary, excluding miscellaneous receipts) for establishments classified in the industry.

8Represents ratio of primary products shipped by establishments classified in industry to total shipments of such products by all manufacturing establishments, wherever classified.

Table 1b. Selected Operating Ratios for the Industry: 1992 and Earlier Years

[Excludes data for auxiliaries. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Year Payroll

per

employee

(dollars)

Production

workers as

percent of

total

employment

(percent)

Annual hours

of production

workers

(number)

Average hourly

earnings of

production

workers

(dollars)

Cost of

materials as

percent of

value of

shipments

(percent)

Cost of

materials and

payroll as

percent of

value of

shipments

(percent)

Value added

per employee

(dollars)

Payroll as

percent of

value added

(percent)

Value added

per production

worker hour

(dollars)

INDUSTRY 2451, MOBILE HOMES

1992 Census 21 ---------- 978 84 1 990 9.40 64 82 44 446 49 26.74

1991 ASM 20 ------------ 333 82 1 916 8.91 65 83 39 368 52 25.12

1990 ASM 19 ------------ 822 82 1 883 8.88 64 82 38 701 51 25.15

1989 ASM 19 ------------ 266 82 1 908 8.61 65 84 36 023 53 23.03

1988 ASM 18 ------------ 934 82 1 895 8.42 65 83 36 600 52 23.59

1987 Census 18 ---------- 576 81 1 926 8.19 64 82 36 742 51 23.49

1986 ASM 17 ------------ 593 82 1 886 7.72 65 83 33 495 53 21.77

1985 ASM 17 ------------ 246 82 1 898 7.68 66 84 33 081 52 21.33

1984 ASM 16 ------------ 226 82 1 863 7.39 67 84 30 776 53 20.03

1983 ASM 15 ------------ 815 82 1 923 7.26 67 84 30 495 52 19.28

1982 Census 14 ---------- 542 81 1 847 6.73 67 84 27 743 52 18.58

1981 ASM 14 ------------ 677 80 1 763 6.98 68 85 27 668 53 19.57

1980 ASM 13 ------------ 410 80 1 762 6.54 67 85 24 665 54 17.52 1979 ASM 12 ------------ 863 82 1 878 5.87 67 84 25 653 50 16.61 1978 ASM 11 ------------ 282 82 1 895 5.11 68 84 22 084 51 14.17 1977 Census 10 ---------- 448 83 1 926 4.62 68 84 20 406 51 12.80

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Table 1b. Selected Operating Ratios for the Industry: 1992 and Earlier Years mCon.

[Excludes data for auxiliaries. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Year Payroll

per

employee

(dollars)

Production

workers as

percent of

total

employment

(percent)

Annual hours

of production

workers

(number)

Average hourly

earnings of

production

workers

(dollars)

Cost of

materials as

percent of

value of

shipments

(percent)

Cost of

materials and

payroll as

percent of

value of

shipments

(percent)

Value added

per employee

(dollars)

Payroll as

percent of

value added

(percent)

Value added

per production

worker hour

(dollars)

INDUSTRY 2452, PREFABRICATED WOOD BUILDINGS

1992 Census 21 ---------- 795 71 1 873 9.64 59 79 44 600 49 33.76 1991 ASM 20 ------------ 632 72 1 846 9.37 61 80 41 642 50 31.52 1990 ASM 19 ------------ 823 71 1 825 9.05 61 81 38 195 52 29.56 1989 ASM 19 ------------ 297 72 1 842 8.82 61 81 39 179 49 29.51 1988 ASM 18 ------------ 996 72 1 967 7.91 60 80 38 488 49 27.09

1987 Census 18 ---------- 638 73 1 886 7.97 59 78 40 276 46 29.31 1986 ASM 17 ------------ 808 70 1 944 7.53 61 79 38 286 47 27.96 1985 ASM 17 ------------ 332 70 1 809 7.62 59 78 37 497 46 29.59 1984 ASM 16 ------------ 094 71 1 867 6.81 61 80 33 173 49 25.10 1983 ASM 15 ------------ 984 69 1 873 6.73 60 79 34 291 47 26.44

1982 Census 15 ---------- 345 68 1 825 6.88 59 78 32 940 47 26.61 1981 ASM 15 ------------ 077 65 1 817 6.76 59 77 33 345 45 28.25 1980 ASM 14 ------------ 350 67 1 810 6.34 61 79 31 036 46 25.67 1979 ASM 12 ------------ 854 72 1 763 5.86 62 80 27 515 47 21.82 1978 ASM 12 ------------ 425 73 1 871 5.46 61 78 28 756 43 21.14 1977 Census 11 ---------- 400 73 1 915 5.03 62 79 26 159 44 18.68

Note: For qualifications of data, see footnotes on table 1a.

Table 2. Industry Statistics for Selected States: 1992 and 1987

[Excludes data for auxiliaries. States with 100 employees or more are shown. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Industry and geographic area

1992 1987

All establishments All employees Production workers

E1 Total(no.)

With 20

employees or

more

(no.)

Number2

(1,000)

Payroll

(million

dollars)

Number

(1,000)

Hours (millions)

Wages

(million

dollars)

Value added

by manufac- ture (million

dollars)

Cost of

materials

(million

dollars)

Value of

shipments

(million

dollars)

New

capital

expend- itures

(million

dollars)

All employ- ees2

(1,000)

Value added

by manufac- ture (million

dollars)

INDUSTRY 2451, MOBILE

HOMES

United States – ----------- 286 239 37.0 813.2 30.9 61.5 578.3 1 644.5 2 891.2 4 531.8 51.1 39.9 1 466.0

Alabama – ------------------------ 25 22 4.0 79.1 3.3 6.7 52.5 146.9 296.3 443.3 3.2 3.0 92.8

Arizona – ------------------------- 8 7 1.0 22.6 .9 2.0 16.9 45.7 71.4 116.4 (D) 1.3 45.7

Arkansas – ------------------------ 2 1 C (D) (D) (D) (D) (D) (D) (D) (D) (NA) (NA)

California – ------------------------ 23 16 2.3 45.3 1.9 3.7 32.0 96.5 120.9 217.2 1.4 3.8 147.7

Colorado – ------------------------ 2 2 C (D) (D) (D) (D) (D) (D) (D) (D) .3 12.3

Florida – -------------------------- 25 19 2.4 53.9 2.0 3.8 39.1 117.8 184.3 301.3 1.6 3.8 136.3

Georgia – ------------------------- 22 18 3.6 73.9 3.1 6.0 52.9 133.4 311.2 445.2 2.6 4.4 121.3

Idaho – --------------------------- 6 5 .8 17.7 .6 1.3 12.5 39.1 62.5 101.1 .7 .5 20.4

Indiana E2 -------------------------- 34 29 4.9 119.3 3.8 7.7 83.0 217.9 426.4 643.2 5.5 4.3 196.8

Kansas – -------------------------- 4 4 E (D) (D) (D) (D) (D) (D) (D) (D) E (D)

Kentucky – ------------------------ 1 1 C (D) (D) (D) (D) (D) (D) (D) (D) (NA) (NA)

Louisiana – ------------------------ 1 1 C (D) (D) (D) (D) (D) (D) (D) (D) C (D)

Maryland E9 ------------------------ 1 1 C (D) (D) (D) (D) (D) (D) (D) (D) (NA) (NA)

Michigan – ------------------------ 4 2 C (D) (D) (D) (D) (D) (D) (D) (D) (NA) (NA)

Minnesota E2 ----------------------- 6 6 .7 16.1 .6 1.1 12.1 32.7 57.1 89.6 1.3 .6 26.1

Mississippi E2 ----------------------- 8 6 1.1 23.8 .9 2.0 15.1 41.1 87.9 128.5 1.6 F (D)

Missouri – ------------------------- 2 1 C (D) (D) (D) (D) (D) (D) (D) (D) E (D) Nebraska E1 ------------------------ 4 4 F (D) (D) (D) (D) (D) (D) (D) (D) E (D)

North Carolina – ------------------- 25 24 3.4 72.6 2.9 5.8 51.7 146.1 276.5 425.3 3.3 H (D)

Ohio – ---------------------------- 5 3 .5 11.2 .4 .9 8.1 24.8 47.4 71.2 (D) .5 23.8

Oklahoma – ----------------------- 2 2 E (D) (D) (D) (D) (D) (D) (D) (D) C (D)

Oregon – ------------------------- 10 10 2.1 48.1 1.8 3.7 36.2 102.0 159.7 260.7 1.6 1.4 53.5 Pennsylvania E1 -------------------- 18 15 1.9 44.7 1.5 2.8 31.8 97.1 154.3 250.6 (D) 2.7 122.4

South Dakota – -------------------- 1 1 C (D) (D) (D) (D) (D) (D) (D) (D) (NA) (NA) Tennessee – ---------------------- 14 12 1.9 40.5 1.6 3.3 29.9 95.7 158.2 253.7 (D) 1.4 47.8

Texas E1 --------------------------- 9 8 1.3 30.7 1.1 2.5 23.6 68.3 109.1 177.4 5.6 2.8 86.7 Virginia – -------------------------- 3 3 .6 12.4 .5 .9 8.8 27.2 43.0 70.6 (D) .6 20.9

Washington – ---------------------- 5 5 .8 19.1 .6 1.3 13.2 36.1 47.7 84.2 (D) .4 14.4 Wisconsin – ----------------------- 5 5 .9 18.9 .7 1.4 13.5 42.9 65.7 107.4 (D) .7 25.8

See footnotes at end of table.

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Table 2. Industry Statistics for Selected States: 1992 and 1987 mCon.

[Excludes data for auxiliaries. States with 100 employees or more are shown. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Industry and geographic area

1992 1987

All establishments All employees Production workers

E1 Total(no.)

With 20

employees or

more

(no.)

Number2

(1,000)

Payroll

(million

dollars)

Number

(1,000)

Hours

(millions)

Wages

(million

dollars)

Value added

by manufacture

(million

dollars)

Cost of

materials

(million

dollars)

Value of

shipments

(million

dollars)

New

capital

expenditures

(million

dollars)

All

employees2

(1,000)

Value added

by manufacture

(million

dollars)

INDUSTRY 2452,

PREFABRICATED WOOD

BUILDINGS

United States E1 ----------- 655 224 19.0 414.1 13.4 25.1 242.0 847.4 1 206.8 2 055.6 24.2 25.4 1 023.0

Alabama E1 ------------------------ 14 5 .3 5.8 .2 .4 3.6 13.7 21.5 34.7 .7 .7 17.7

Arizona – ------------------------- 8 3 .3 9.6 .2 .5 4.4 20.0 40.0 60.3 (D) .4 14.2

Arkansas E8 ------------------------ 9 1 C (D) (D) (D) (D) (D) (D) (D) (D) C (D)

California E1 ------------------------ 41 10 .6 12.1 .4 .8 7.2 23.4 35.6 58.6 .7 1.3 60.6

Delaware – ------------------------ 1 1 F (D) (D) (D) (D) (D) (D) (D) (D) F (D)

Florida – -------------------------- 15 7 .4 6.0 .3 .5 3.6 12.9 14.1 27.2 .3 1.4 21.9

Georgia E3 ------------------------- 17 3 .3 4.9 .2 .4 3.1 9.8 16.3 26.5 .5 .8 43.5

Idaho – --------------------------- 9 3 .2 2.8 .1 .2 2.0 4.7 7.3 12.1 .2 (NA) (NA)

Illinois E2 --------------------------- 25 8 F (D) (D) (D) (D) (D) (D) (D) (D) F (D)

Indiana E2 -------------------------- 25 10 .9 22.1 .7 1.3 13.5 46.6 57.5 104.0 .9 .6 19.7

Iowa – ---------------------------- 4 2 C (D) (D) (D) (D) (D) (D) (D) (D) C (D)

Kansas – -------------------------- 3 2 C (D) (D) (D) (D) (D) (D) (D) (D) E (D)

Maine – --------------------------- 11 5 E (D) (D) (D) (D) (D) (D) (D) (D) E (D)

Maryland E2 ------------------------ 12 7 F (D) (D) (D) (D) (D) (D) (D) (D) F (D)

Massachusetts E6 ------------------- 7 4 .2 6.2 .1 .2 2.9 9.3 15.7 24.9 (D) .9 44.3

Michigan E1 ------------------------ 29 10 F (D) (D) (D) (D) (D) (D) (D) (D) F (D)

Minnesota – ----------------------- 20 8 .5 13.7 .3 .6 5.4 31.4 48.3 79.6 .6 C (D)

Mississippi E1 ----------------------- 6 2 .1 1.5 .1 .1 .9 3.0 3.7 6.7 .1 (NA) (NA)

Missouri – ------------------------- 12 3 C (D) (D) (D) (D) (D) (D) (D) (D) C (D)

Montana E2 ------------------------ 18 6 E (D) (D) (D) (D) (D) (D) (D) (D) C (D)

New Hampshire E2 ------------------ 17 4 .3 8.3 .2 .4 4.4 15.1 17.7 33.0 .2 G (D)

New York E2 ----------------------- 32 11 F (D) (D) (D) (D) (D) (D) (D) (D) F (D)

North Carolina E1 ------------------- 21 5 .3 7.2 .2 .5 4.5 15.2 21.7 37.0 .4 F (D)

Ohio E1 ---------------------------- 18 5 .4 9.5 .3 .6 5.8 31.8 34.6 65.8 (D) 1.2 40.4

Oregon E3 ------------------------- 19 4 .2 5.6 .2 .3 3.4 8.4 16.2 24.6 .1 .2 4.8

Pennsylvania – -------------------- 55 33 3.7 80.3 2.7 4.7 47.5 154.2 207.9 361.5 (D) 4.1 192.6

Tennessee – ---------------------- 20 7 .7 10.4 .5 .7 4.8 20.2 22.4 42.6 (D) .5 19.0

Texas E4 --------------------------- 25 8 .7 12.8 .4 .9 8.3 28.0 44.0 71.7 .8 .9 29.1

Utah E1 ---------------------------- 8 1 C (D) (D) (D) (D) (D) (D) (D) (Z) (NA) (NA)

Vermont E2 ------------------------- 10 4 C (D) (D) (D) (D) (D) (D) (D) (D) C (D)

Virginia – -------------------------- 24 12 1.0 19.2 .8 1.3 11.2 32.8 48.3 80.9 (D) 1.9 71.1

Washington E4 ---------------------- 22 4 .3 7.9 .2 .4 4.9 15.3 19.9 35.3 (D) (NA) (NA)

West Virginia E3 -------------------- 10 5 .3 5.0 .2 .3 2.9 6.9 9.5 16.4 .2 (NA) (NA)

Wisconsin – ----------------------- 26 13 1.4 32.1 1.0 2.0 18.6 66.8 115.7 181.6 (D) 1.3 65.8

Note: For qualifications of data, see footnotes on table 1a.

1Payroll and sales data for some small single-establishment companies with up to 20 employees (cutoff varied by industry) were obtained from administrative records of other Government

agencies rather than from census report forms. These data were then used in conjunction with industry averages to estimate the items shown for these small establishments. This technique was

also used for a small number of other establishments whose reports were not received at the time data were tabulated. The following symbols are shown for those States where estimated value of

shipments data based on administrative-record data account for 10 percent or more of figure shown: E1 m10 to 19 percent; E2m20 to 29 percent; E3m30 to 39 percent; E4m40 to 49 percent;

E5m50 to 59 percent; E6 m60 to 69 percent; E7 m70 to 79 percent; E8 m80 to 89 percent; E9 m90 percent or more. 2Statistics for some producing States have been withheld to avoid disclosing data for individual companies. However, for States with 100 employees or more, number of establishments is

shown and employment-size range is indicated by one of the following symbols: Cm100 to 249 employees; Em250 to 499 employees; Fm500 to 999 employees; Gm1,000 to 2,499 employees;

Hm2,500 to 4,999 employees; I m5,000 to 9,999 employees; J m10,000 to 24,999 employees; K m25,000 to 49,999 employees; L m50,000 to 99,999 employees; M m100,000 employees or more.

MANUFACTURESmINDUSTRY SERIES WOOD BUILDINGS AND MOBILE HOMES nn24D–7
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Table 3a. Summary Statistics for the Industry: 1992

[For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Item Mobile homes

(SIC 2451)

Prefabricated

wood

buildings

(SIC 2452)

Companies number --------------------------------------- -- 155 561

All establishments number --------------------------------- -- 286 655

With 1 to 19 employees number -------------------------- -- 47 431

With 20 to 99 employees number ------------------------- -- 71 176

With 100 employees or more number --------------------- -- 168 48

Employment and labor costs:

Employees 1,000 ---------------------------------------- -- 37.0 19.0 Compensation, total mil dol ------------------------------ -- 969.9 504.2 Annual payroll mil dol ---------------------------------- -- 813.2 414.1 Fringe benefits mil dol --------------------------------- -- 156.7 90.1 Social Security and other legally required

payments mil dol ----------------------------------- -- 100.1 52.1 Employer voluntary payments mil dol ------------------ -- 56.6 38.0

Production workers:

Average for year 1,000 ---------------------------------- -- 30.9 13.4

March 1,000 ------------------------------------------ -- 28.4 12.4

May 1,000 -------------------------------------------- -- 30.3 13.5

August 1,000 ----------------------------------------- -- 32.1 14.3

November 1,000 -------------------------------------- -- 32.8 13.4

Hours millions ------------------------------------------ -- 61.5 25.1

Wages mil dol ------------------------------------------ -- 578.3 242.0

Item Mobile homes

(SIC 2451)

Prefabricated

wood

buildings

(SIC 2452)

Cost of materials 1 ----------------------------------mil dol-- 2 891.2 1 206.8 Materials, parts, containers, etc., consumed 2 --------mil dol-- 2 828.9 1 113.7 Resales mil dol ----------------------------------------- -- 18.0 31.9 Fuels mil dol -------------------------------------------- -- 4.6 4.2 Purchased electricity mil dol ------------------------------ -- 16.5 7.9 Contract work mil dol ------------------------------------ -- 23.2 49.1

Quantity of electric energy used for heat and power: Purchased mil kWh ------------------------------------- -- 255.8 126.3

Generated less sold mil kWh ---------------------------- -- – –

Total value of shipments mil dol ---------------------------- -- 4 531.8 2 055.6

Value added mil dol --------------------------------------- -- 1 644.5 847.4

Inventories by stage of fabrication:

Beginning of 1992 mil dol -------------------------------- -- 204.4 201.5

Finished goods mil dol --------------------------------- -- 41.2 54.8

Work in process mil dol -------------------------------- -- 24.5 25.5

Materials and supplies mil dol -------------------------- -- 138.8 121.1

End of 1992 mil dol ------------------------------------- -- 225.7 206.9

Finished goods mil dol --------------------------------- -- 40.5 54.4

Work in process mil dol -------------------------------- -- 29.1 24.7

Materials and supplies mil dol -------------------------- -- 156.1 127.9

Note: For qualifications of data, see footnotes on table 1a.

1Data on purchased services for the repair of buildings and machinery and for communication services are not included in cost of materials, etc., but are shown in table 3c.

2Data on materials consumed by type are shown in table 7. Data on amount purchased or transferred from foreign sources are shown in table 3c.

Table 3b. Gross Book Value of Depreciable Assets, Capital Expenditures, Retirements,

Depreciation, and Rental Payments: 1992

[Million dollars. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Item Mobile homes

(SIC 2451)

Prefabricated

wood

buildings

(SIC 2452)

Gross book value of depreciable assets:

Total:

Beginning of year --------------------------------------- 438.9 359.9

New capital expenditures 1 ----------------------------- 51.1 24.2

Used capital expenditures ----------------------------- 4.0 2.9

Retirements------------------------------------------ 10.6 8.6

End of year -------------------------------------------- 483.4 378.4

Buildings and other structures:

Beginning of year --------------------------------------- 270.8 177.0

New capital expenditures ------------------------------ 26.1 6.1

Used capital expenditures ----------------------------- .4 .1

Retirements------------------------------------------ 3.5 1.3

End of year -------------------------------------------- 293.8 182.0

Machinery and equipment:

Beginning of year --------------------------------------- 168.2 182.9

Item Mobile homes

(SIC 2451)

Prefabricated

wood

buildings

(SIC 2452)

Gross book value of depreciable assets mCon.

Machinery and equipment mCon.

Beginning of yearmCon.

New capital expenditures 1 ----------------------------- 25.0 18.1

Used capital expenditures ----------------------------- 3.5 2.8

Retirements------------------------------------------ 7.1 7.4

End of year -------------------------------------------- 189.6 196.4

Depreciation charges during 1992: Total ---------------------------------------------------- 28.8 28.5 Buildings and other structures --------------------------- 13.4 9.1 Machinery and equipment ------------------------------- 15.4 19.4

Rental payments: Total ---------------------------------------------------- 18.9 19.4

Buildings and other structures --------------------------- 13.8 12.1

Machinery and equipment ------------------------------- 5.0 7.3

1Data on new machinery and equipment expenditures by type are provided in table 3c.

Table 3c. Supplemental Industry Statistics Based on Sample Estimates: 1992

[For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Item

Mobile homes

(SIC 2451)

Prefabricated wood buildings

(SIC 2452)

Amount

(million

dollars)

Relative

standard

error of

estimate1

(percent)

Amount

(million

dollars)

Relative

standard

error of

estimate1

(percent)

Purchased services:

Cost of purchased services for the repair of–

Buildings and other structures --------------------------------------------- 3.0 (X) 1.8 (X)

Response coverage ratio (percent) 2 -------------------------------------- 72.2 (X) 67.9 (X)

Machinery --------------------------------------------------------------- 7.9 (X) 4.6 (X)

Response coverage ratio (percent) 2 -------------------------------------- 74.1 (X) 68.4 (X)

See footnotes at end of table.

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Table 3c. Supplemental Industry Statistics Based on Sample Estimates: 1992 mCon.

[For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Item

Mobile homes

(SIC 2451)

Prefabricated wood buildings

(SIC 2452)

Amount

(million

dollars)

Relative

standard

error of

estimate1

(percent)

Amount

(million

dollars)

Relative

standard

error of

estimate1

(percent)

Purchased servicesmCon.

Other purchased services:

Communications --------------------------------------------------------- 8.4 (X) 4.7 (X)

Response coverage ratio (percent) 2 -------------------------------------- 71.0 (X) 66.5 (X)

Legal ------------------------------------------------------------------- 3.9 (X) 3.8 (X)

Response coverage ratio (percent) 2 -------------------------------------- 73.7 (X) 68.4 (X)

Accounting and bookkeeping ---------------------------------------------- .9 (X) 2.6 (X)

Response coverage ratio (percent) 2 -------------------------------------- 70.2 (X) 68.4 (X)

Advertising -------------------------------------------------------------- 5.3 (X) 8.6 (X)

Response coverage ratio (percent) 2 -------------------------------------- 74.7 (X) 68.4 (X)

Software and other data processing ---------------------------------------- .3 (X) 1.0 (X)

Response coverage ratio (percent) 2 -------------------------------------- 72.5 (X) 66.6 (X)

Refuse removal, including hazardous waste 10.7 --------------------------------- (X) 3.0 (X)

Response coverage ratio (percent) 2 -------------------------------------- 74.7 (X) 67.9 (X)

New machinery and equipment expenditures 25.0 ------------------------------------ (X) 18.1 (X)

Automobiles, trucks, etc., for highway use 5.2 ------------------------------------ 9 8.7 7

Computers and peripheral data processing equipment 1.6 -------------------------- 8 3.4 13

All other ------------------------------------------------------------------- 18.2 3 6.1 11

Adjustment ratio3--------------------------------------------------------- 1.5 (X) 1.9 (X)

Cost of materials, components, parts, etc., used 2 --------------------------------- 828.9 (X) 1 113.7 (X)

Materials purchased or transferred from foreign sources 4 ----------------------- 13.8 29 7.3 37 Materials purchased or transferred from domestic sources 2 ---------------------- 815.1 1 1 106.4 1 Adjustment ratio3--------------------------------------------------------- 1.7 (X) 1.9 (X)

1For description of relative standard error of estimate, see Qualifications of the Data in appendixes.

2Measure of extent to which respondents reported each item. Derived for each item by calculating the ratio of weighted employment for those sample establishments that reported the

specific inquiry to total employment for all establishments classified in industry. (See appendixes for explanation of sample weight.) 3Detail has been adjusted upwards to account for nonresponse. Inverse of the ratio shown represents a measure of the response of the inquiry. (See appendixes for further explanation.)

4Data may understate the true cost of imported parts, components, and supplies since some respondents do not know the origin of these materials. Includes cases where materials were

purchased from secondary suppliers or where they were transferred from company-operated warehouses or other distribution points. Direct purchases from foreign suppliers and importers by

domestic manufacturing establishments are believed to be reported accurately.

Table 4. Industry Statistics by Employment Size of Establishment: 1992

[For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Industry and employment size class

All employees Production workers

E1

All

establishments

(no.)

Number

(1,000)

Payroll

(million

dollars)

Number

(1,000)

Hours

(millions)

Wages

(million

dollars)

Value

added by

manufacture

(million

dollars)

Cost of

materials

(million

dollars)

Value of

shipments

(million

dollars)

New

capital

expenditures

(million

dollars)

End-ofyear

inventories

(million

dollars)

INDUSTRY 2451, MOBILE HOMES

Total – --------------------------------- 286 37.0 813.2 30.9 61.5 578.3 1 644.5 2 891.2 4 531.8 51.1 225.7

Establishments with an average of m 1 to 4 employees E1 ---------------------------- 29 .1 1.1 (Z) .1 .6 9.5 25.5 34.9 .1 1.4

5 to 9 employees E5 ---------------------------- 9 .1 1.4 (Z) .1 .7 3.3 3.4 6.1 (Z) .9

10 to 19 employees E1 -------------------------- 9 .1 2.6 .1 .1 1.5 5.2 6.9 12.0 (Z) .6

20 to 49 employees E4 -------------------------- 23 .8 16.5 .6 1.2 12.0 34.3 52.2 85.9 .8 5.1 50 to 99 employees E1 -------------------------- 48 3.8 85.4 3.1 6.0 57.4 171.6 306.8 479.0 7.3 29.1 100 to 249 employees – ------------------------ 145 23.1 517.7 19.4 38.4 368.5 1 060.6 1 780.1 2 839.4 27.6 124.4 250 to 499 employees E1 ------------------------ 20 6.6 141.8 5.6 11.4 101.9 317.4 527.5 842.6 15.2 49.8 500 to 999 employees – ------------------------ 2 2.4 46.5 2.0 4.3 35.8 42.6 188.9 231.8 (D) 14.4

1,000 to 2,499 employees – --------------------- 1 (D) (D) (D) (D) (D) (D) (D) (D) (D) (D)

Covered by administrative records 2--------------- E9 26 .1 1.0 .1 .1 .7 2.0 3.4 5.3 (Z) .3

INDUSTRY 2452, PREFABRICATED

WOOD BUILDINGS

Total E1 --------------------------------- 655 19.0 414.1 13.4 25.1 242.0 847.4 1 206.8 2 055.6 24.2 206.9

Establishments with an average of m 1 to 4 employees E8 ---------------------------- 191 .4 7.3 .3 .5 4.2 18.9 28.2 47.2 .7 6.1 5 to 9 employees E5 ---------------------------- 142 1.0 15.9 .7 1.3 9.7 32.1 44.7 76.6 1.2 8.6 10 to 19 employees E3 -------------------------- 98 1.3 26.3 .9 1.7 16.2 59.5 75.4 135.3 1.4 13.2

20 to 49 employees E1 -------------------------- 115 3.7 78.2 2.6 4.9 45.1 202.2 242.7 443.7 5.7 46.0

50 to 99 employees E1 -------------------------- 61 4.2 99.6 3.0 5.9 59.0 195.5 294.2 488.1 5.0 64.2

100 to 249 employees E1 ------------------------ 41 5.9 129.4 4.1 7.4 71.8 231.3 367.0 603.6 6.1 49.7

250 to 499 employees – ------------------------ 6 2.6 57.5 1.8 3.4 36.0 108.0 154.5 261.0 4.0 19.2

500 to 999 employees – ------------------------ 1 (D) (D) (D) (D) (D) (D) (D) (D) (D) (D)

Covered by administrative records 2--------------- E9 218 .7 10.5 .6 1.0 6.5 21.2 34.4 55.6 .9 6.3

Note: For qualifications of data, see footnotes on table 1a. Data shown as (D) are included in underscored figures above.

1Payroll and sales data for some small single-establishment manufacturing companies with up to 20 employees (cutoff varied by industry) were obtained from administrative records of other

Government agencies rather than from census report forms. These data were then used in conjunction with industry averages to estimate the items shown for these small establishments. This

technique was also used for a small number of other establishments whose reports were not received at the time data were tabulated. The following symbols are shown for those employment-size

classes where estimated data based on administrative-record data account for 10 percent or more of figures shown: E1 m10 to 19 percent; E2m20 to 29 percent; E3m30 to 39 percent; E4m40 to

49 percent; E5 m50 to 59 percent; E6 m60 to 69 percent; E7 m70 to 79 percent; E8 m80 to 89 percent; E9 m90 percent or more. 2Report forms were not mailed to small single-establishment companies with up to 20 employees (cutoff varied by industry). Payroll and sales data for 1992 were obtained from

administrative records supplied by other agencies of the Federal Government. Those data were then used in conjunction with industry averages to estimate the items shown. Data are also

included in respective employment-size classes shown.

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Table 5a. Industry Statistics by Industry and Primary Product Class Specialization: 1992

[Table presents selected statistics for establishments according to their degree of specialization in products primary to their industry. Measures of plant specialization shown are (1) industry

specialization: ratio of primary product shipments to total product shipments (primary plus secondary, excluding miscellaneous receipts) for the establishment; and (2) product class specialization:

ratio of largest primary product class shipments to total product shipments (primary plus secondary, excluding miscellaneous receipts) for the establishment. See appendix for method of computing

ratios. For meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Industry or

product

class

code

Industry or primary product class

All employees Production workers

All

establishments

(number)

Number

(1,000)

Payroll

(million

dollars)

Number

(1,000)

Hours

(millions)

Wages

(million

dollars)

Value

added by

manufacture

(million

dollars)

Cost of

materials

(million

dollars)

Value of

shipments

(million

dollars)

New

capital

expenditures

(million

dollars)

2451 Mobile homes: All establishments in industry 286 ------------------------ 37.0 813.2 30.9 61.5 578.3 1 644.5 2 891.2 4 531.8 51.1

Establishments with this product class primary:

24511 Manufactured (mobile) homes (35 feet or more in

length) 196 ------------------------------------------ 32.7 719.1 27.4 54.4 514.6 1 469.0 2 571.7 4 036.5 43.7

24512 Manufactured (mobile) buildings, nonresidential 21 ------ 1.3 27.0 1.0 2.2 18.4 42.6 75.0 119.0 (D)

2452 Prefabricated wood buildings:

All establishments in industry 655 ------------------------ 19.0 414.1 13.4 25.1 242.0 847.4 1 206.8 2 055.6 24.2

Establishments with this product class primary:

24521 Components for stationary buildings (not sold as

complete units) 54 ---------------------------------- 1.6 34.6 1.0 2.0 18.5 65.9 75.7 141.8 1.0 24522 Precut packages for stationary buildings (complete

units) 94 ------------------------------------------- 3.0 69.6 1.9 3.7 34.4 172.1 247.2 417.9 4.7 24523 Stationary buildings sold as complete units and

shipped in panel form 62 ---------------------------- 2.4 58.0 1.7 3.4 33.3 139.0 233.5 376.6 4.7 24524 Stationary buildings shipped in three-dimensional assemblies 108 -------------------------------------- 8.2 175.9 6.0 11.2 110.5 315.4 424.5 738.3 8.0

Note: For qualifications of data, see footnotes on table 1a.

Table 5b. Industry–Product AnalysismValue of Industry and Primary Product Shipments;

Specialization and Coverage Ratios: 1992 and Earlier Census Years

[Million dollars. An establishment is assigned to an industry based on shipment values of products representing largest amount considered primary to an industry. Frequently, establishment

shipments comprise mixtures of products assigned to an industry (primary), those considered primary to other industries (secondary), and receipts for activities such as merchandising or contract

work (total miscellaneous receipts). Subtotals for total value of shipments show this product pattern for an industry. Primary products specialization ratio is the primary products value of shipments

divided by the sum of primary products value of shipments plus secondary products value of shipments. The extent of which an industry’s primary products are shipped by establishments classified

both in and out of an industry is the coverage ratio and is calculated by dividing the primary products value of shipments by the value of primary products shipments made in all industries. For

meaning of abbreviations and symbols, see introductory text. For explanation of terms, see appendixes]

Industry 1992 1987 1982

INDUSTRY 2451, MOBILE HOMES

Total value of shipments ------------------------------------------------ nnnnnn nnnnnn4 531.8 4 102.4 nnnnnn3 606.4

Primary products value of shipments ----------------------------------- nnnnnn nnnnnnnnnn(D) 4 030.9 nnnnnn3 571.7

Secondary products value of shipments --------------------------------- nnnnnnnnn nnnnnnnnnn(D) 22.4 nnnnnnnnn11.9

Total miscellaneous receipts ------------------------------------------- nnnnnnnnn nnnnnnnnn34.5 49.0 nnnnnnnnn22.8

Value of resales ---------------------------------------------------- nnnnnnnnn nnnnnnnnn22.4 23.6 nnnnnnnnn12.7

Contract receipts --------------------------------------------------- nnnnnnnnnn nnnnnnnnnn(D) 1.6 nnnnnnnnnn(D)

Other miscellaneous receipts ---------------------------------------- nnnnnnnnn nnnnnnnnnn(D) 23.8 nnnnnnnnnn(D)

Primary products specialization ratio -------------------------------------- nnnnnnnnnnn nnnnnnnnnn(D) 99 nnnnnnnnnnn99

Value of primary products shipments made in all industries ----------------- nnnnnn nnnnnn4 472.1 4 044.4 nnnnnn3 578.9

Value of primary products shipments made in this industry ---------------- nnnnnn nnnnnnnnnn(D) 4 030.9 nnnnnn3 571.7

Value of primary products shipments made in other industries ------------- nnnnnnnnn nnnnnnnnnn(D) 13.4 nnnnnnnnnn7.2

Coverage ratio --------------------------------------------------------- nnnnnnnnnn nnnnnnnnnn(D) 100 nnnnnnnnnnn99

INDUSTRY 2452, PREFABRICATED WOOD BUILDINGS

Total value of shipments ------------------------------------------------ nnnnnn nnnnnn2 055.6 2 472.2 nnnnnn1 349.0

Primary products value of shipments ----------------------------------- nnnnnn nnnnnn1 957.9 2 290.6 nnnnnn1 270.9

Secondary products value of shipments --------------------------------- nnnnnnnn nnnnnnnnn35.2 117.2 nnnnnnnnn45.4

Total miscellaneous receipts ------------------------------------------- nnnnnnnnn nnnnnnnnn62.4 64.4 nnnnnnnnn32.7

Value of resales ---------------------------------------------------- nnnnnnnnn nnnnnnnnn39.2 49.4 nnnnnnnnn22.3

Contract receipts --------------------------------------------------- nnnnnnnnnn nnnnnnnnnn9.5 9.1 nnnnnnnnnn4.4

Other miscellaneous receipts ---------------------------------------- nnnnnnnnnn nnnnnnnnn13.7 5.8 nnnnnnnnnn6.0

Sales of scrap and refuse ----------------------------------------- nnnnnnnnn nnnnnnnnnnn.5 (NA) nnnnnnnnnnn.7

Other miscellaneous receipts -------------------------------------- nnnnnnnnn nnnnnnnnn12.1 (NA) nnnnnnnnnn3.8

Other miscellaneous receipts, n.s.k. -------------------------------- nnnnnnnnn nnnnnnnnnn1.1 (NA) nnnnnnnnnn1.5

Primary products specialization ratio -------------------------------------- nnnnnnnnnnn nnnnnnnnnnn98 95 nnnnnnnnnnn97

Value of primary products shipments made in all industries ----------------- nnnnnn nnnnnn2 064.2 2 334.3 nnnnnn1 286.5

Value of primary products shipments made in this industry ---------------- nnnnnn nnnnnn1 957.9 2 290.6 nnnnnn1 270.9

Value of primary products shipments made in other industries ------------- nnnnnnnnn nnnnnnnn106.3 43.7 nnnnnnnnn15.5

Coverage ratio --------------------------------------------------------- nnnnnnnnnnn nnnnnnnnnnn95 98 nnnnnnnnnnn99

Note: For qualifications of data, see footnotes on table 1a.

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Table 6a. Product and Product Classes mQuantity and Value of Shipments by All Producers:

1992 and 1987

[Includes quantity and value of products of this industry produced by (1) establishments classified in this industry (primary) and (2) establishments classified in other industries (secondary). Transfers

of products of this industry from one establishment of a company to another establishment of the same company (interplant transfers) are also included. For further explanation, see Value of

Shipments in appendixes. For meaning of abbreviations and symbols, see introductory text]

Product

code Product

1992 1987

Product shipments 1 Product shipments 1 Number of

companies

with

shipments

of

$100,000

or more Quantity2

Value

(million

dollars)

Number of

companies

with

shipments

of

$100,000

or more Quantity2

Value

(million

dollars)

2451– –– MOBILE HOMES

 Total ------------------------------------------------- (NA) (X) 4 472.1 (NA) (X) 4 044.4

24511 Manufactured (mobile) homes (35 feet or more in

length)--------------------------------------------------------- (NA) (X) 3 976.4 (NA) (X) 3 476.0

24511 11 8 feet to 11 feet 11 inches in width 1,000 units ------------------ nnn -- 8 1.9 26.9 nnn6 2.0 24.9

24511 13 12 feet in width 1,000 units ------------------------------------ nn -- 12 3.8 53.6 nn11 *2.8 31.7

24511 15 12 feet 1 inch to 13 feet 11 inches in width 1,000 units ---------- nnn -- 8 10.5 137.5 nn17 18.9 229.3

24511 17 14 feet or more in width 1,000 units ---------------------------- nn -- 50 91.1 1 279.4 nn62 111.7 1 414.9

24511 18 Double wides 1,000 units -------------------------------------- nn -- 58 90.8 2 212.3 nn61 74.4 1 542.2

24511 00 Manufactured (mobile) homes (35 feet or more in

length), n.s.k. ------------------------------------------------- (NA) (X) 266.5 (NA) (X) 232.8

24512 Manufactured (mobile) buildings, nonresidential --------------------- (NA) (X) 130.1 (NA) (X) 230.0

24512 22 Office and other commercial 1,000 units ------------------------ nn -- 23 **5.1 64.4 nn26 13.9 123.5

24512 30 Other, including classroom and industrial 1,000 units ------------- nn -- 18 **4.1 62.3 nn15 *3.6 80.6

24512 00 Manufactured (mobile) buildings, nonresidential,

n.s.k. -------------------------------------------------------- (NA) (X) 3.4 (NA) (X) 25.8

24510 Mobile homes, n.s.k. --------------------------------------------- (NA) (X) 365.6 (NA) (X) 338.4

24510 00 Mobile homes, n.s.k. 3 ------------------------------------------ (NA) (X) 360.3 (NA) (X) 269.8

24510 02 Mobile homes, n.s.k. 4 ------------------------------------------ (NA) (X) 5.3 (NA) (X) 68.6

2452– –– PREFABRICATED WOOD BUILDINGS

 Total ------------------------------------------------- (NA) (X) 2 064.2 (NA) (X) 2 334.3

24521 Components for stationary buildings (not sold as

complete units) ------------------------------------------------- (NA) (X) 212.3 (NA) (X) 400.4

24521 73 Residential (homes, townhouses, and apartments) --- nn ------------- 77 (X) 171.7 nn89 (X) 299.0

24521 75 Nonresidential (includes motels and hotels) ---------- nn ------------- 29 (X) 35.8 nn40 (X) 80.7

24521 00 Components for stationary buildings (not sold as

complete units), n.s.k. ----------------------------------------- (NA) (X) 4.8 (NA) (X) 20.6

24522 Precut packages for stationary buildings (complete

units) ---------------------------------------------------------- (NA) (X) 406.3 (NA) (X) 374.9 Residential: 24522 17 Log homes 1,000 units -------------------------------------- nn -- 51 15.2 121.3 nn37 (S) 117.8

24522 19 Other, including homes, townhouses, and

apartments 1,000 units ------------------------------------- nn -- 24 5.7 86.7 nn32 *13.8 181.7 24522 23 Nonresidential (includes motels and hotels) 1,000 units ----------- nn -- 23 (S) 195.0 nn21 (S) 65.7

24522 00 Precut packages for stationary buildings (complete

units), n.s.k. -------------------------------------------------- (NA) (X) 3.2 (NA) (X) 9.8

24523 Stationary buildings sold as complete units and shipped

in panel form --------------------------------------------------- (NA) (X) 355.5 (NA) (X) 403.8

Residential:

24523 33 Single family, including townhouses 1,000 units ---------------- nn -- 31 *9.9 254.8 nn35 13.3 242.9

24523 35 Multifamily 1,000 units -------------------------------------- nnn -- 8 *.6 5.8 nn12 *2.9 26.5

24523 37 Nonresidential (includes motels and hotels) 1,000 units ----------- nn -- 13 (S) 39.3 nn20 20.8 120.9

24523 00 Stationary buildings sold as complete units and

shipped in panel form, n.s.k. ----------------------------------- (NA) (X) 55.6 (NA) (X) 13.5

24524 Stationary buildings shipped in three-dimensional

assemblies ----------------------------------------------------- (NA) (X) 737.8 (NA) (X) 803.3

24524 41 Residential (homes, townhouses, and apartments) 1,000 units ---- nn -- 57 *16.4 560.9 nn56 20.2 607.2

24524 47 Nonresidential (includes motels and hotels) 1,000 units ----------- nn -- 33 **13.3 132.3 nn34 **21.6 176.1

24524 00 Stationary buildings shipped in three-dimensional

assemblies, n.s.k. --------------------------------------------- (NA) (X) 44.6 (NA) (X) 20.0

24520 Prefabricated wood buildings, n.s.k. -------------------------------- (NA) (X) 352.3 (NA) (X) 351.9

24520 00 Prefabricated wood buildings, n.s.k. 3 ----------------------------- (NA) (X) 296.7 (NA) (X) 276.6

24520 02 Prefabricated wood buildings, n.s.k. 4 ----------------------------- (NA) (X) 55.6 (NA) (X) 75.3

1Data reported by all producers, not just those with shipments of $100,000 or more.

2For some establishments, data have been estimated from central unit values which are based on quantity-value relationships of reported data. The following symbols are used when

percentage of each quantity figure estimated in this manner equals or exceeds 10 percent of published figure: *10 to 19 percent estimated; **20 to 29 percent estimated. If 30 percent or more is

estimated, figure is replaced by (S). 3Typically for establishments with 5 employees or more.

4Typically for establishments with less than 5 employees.

MANUFACTURESmINDUSTRY SERIES WOOD BUILDINGS AND MOBILE HOMES nn24D–11
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Table 6b. Product ClassesmValue of Shipments by All Producers for Specified States: 1992

and 1987

[Million dollars. Product classes shown are those where the data are geographically dispersed, provided dispersion is not approximated by data in table 2. Also, product classes are not shown if

they are miscellaneous or "not specified by kind" classes. Statistics for some States are withheld because they are either less than $2 million in product class shipments or they disclose data for

individual companies in 1992. For meaning of abbreviations and symbols, see introductory text]

Product class and geographic area 1992 value of

product shipments

1987 value of

product shipments

24511, MANUFACTURED (MOBILE) HOMES

(35 FEET OR MORE IN LENGTH)

United States ------------------------------ 3 976.4 3 476.0

Alabama ------------------------------------------- 337.2 274.9 Arizona -------------------------------------------- 102.2 101.4 California------------------------------------------- 191.4 259.5 Georgia -------------------------------------------- 397.9 403.9 Indiana--------------------------------------------- 496.6 454.4

Kansas--------------------------------------------- 44.1 30.7 Nebraska------------------------------------------- 67.2 45.0 North Carolina -------------------------------------- 376.1 361.7 Pennsylvania --------------------------------------- 253.9 243.5 Washington----------------------------------------- 66.7 (NA)

24512, MANUFACTURED (MOBILE)

BUILDINGS, NONRESIDENTIAL

United States ------------------------------ 130.1 230.0

Florida --------------------------------------------- 12.9 (NA)

Georgia -------------------------------------------- 21.2 32.4

Indiana--------------------------------------------- 9.2 (NA)

24521, COMPONENTS FOR STATIONARY

BUILDINGS (NOT SOLD AS COMPLETE

UNITS)

United States ------------------------------ 212.3 400.4

Alabama ------------------------------------------- 4.7 17.8

California------------------------------------------- 10.9 66.3

Florida --------------------------------------------- 11.6 18.5

Illinois---------------------------------------------- 14.0 20.3

Kentucky ------------------------------------------- 5.8 (NA)

Maryland ------------------------------------------- 23.8 (NA)

Massachusetts -------------------------------------- 6.6 15.0

Michigan ------------------------------------------- 5.1 (NA)

Minnesota ------------------------------------------ 2.3 (NA)

Mississippi------------------------------------------ 4.0 5.1

Missouri-------------------------------------------- 12.0 (NA)

New York ------------------------------------------ 5.9 (NA)

North Carolina -------------------------------------- 8.5 (NA)

Ohio ----------------------------------------------- 6.3 28.3

Oregon -------------------------------------------- 2.8 (NA)

Product class and geographic area 1992 value of

product shipments

1987 value of

product shipments

24521, COMPONENTS FOR STATIONARY

BUILDINGS (NOT SOLD AS COMPLETE

UNITS)mCon.

Pennsylvania --------------------------------------- 6.9 13.3 South Dakota --------------------------------------- 6.6 (NA) Texas---------------------------------------------- 5.2 (NA)

Virginia--------------------------------------------- 5.4 22.2 Washington----------------------------------------- 5.5 (NA) Wisconsin ------------------------------------------ 24.0 (NA)

24522, PRECUT PACKAGES FOR

STATIONARY BUILDINGS (COMPLETE

UNITS)

United States ------------------------------ 406.3 374.9

California------------------------------------------- 27.1 (NA)

Connecticut----------------------------------------- 3.6 5.2

Maine---------------------------------------------- 13.3 35.6

Michigan ------------------------------------------- 20.7 6.9

Missouri-------------------------------------------- 10.0 6.3

Montana ------------------------------------------- 9.5 7.8 New York ------------------------------------------ 10.2 32.8 North Carolina -------------------------------------- 3.5 10.2 Pennsylvania --------------------------------------- 24.1 (NA) Tennessee ----------------------------------------- 32.6 7.6 Washington----------------------------------------- 2.3 (NA)

24523, STATIONARY BUILDINGS SOLD AS

COMPLETE UNITS AND SHIPPED IN PANEL

FORM

United States ------------------------------ 355.5 403.8

Illinois---------------------------------------------- 35.0 36.0

Michigan ------------------------------------------- 4.0 16.5

New York ------------------------------------------ 18.8 (NA)

North Carolina -------------------------------------- 12.7 (NA)

Ohio ----------------------------------------------- 5.4 45.2

Pennsylvania --------------------------------------- 53.5 (NA)

Wisconsin ------------------------------------------ 61.8 46.7

24524, STATIONARY BUILDINGS SHIPPED IN

THREE-DIMENSIONAL ASSEMBLIES

United States ------------------------------ 737.8 803.3

California------------------------------------------- 12.2 (NA) Indiana--------------------------------------------- 45.8 (NA)

Maryland ------------------------------------------- 53.0 (NA)

Minnesota ------------------------------------------ 12.2 (NA)

New Hampshire ------------------------------------- 19.3 46.0

New York ------------------------------------------ 30.3 26.1

Pennsylvania --------------------------------------- 236.1 273.3

Texas---------------------------------------------- 21.7 (NA)

Virginia--------------------------------------------- 51.9 56.2

Washington----------------------------------------- 5.5 (NA)

Wisconsin ------------------------------------------ 53.5 21.5

Table 6c. Historical Statistics for Product Classes mValue Shipped by All Producers: 1992

and Earlier Years

[Million dollars. For meaning of abbreviations and symbols, see introductory text]

Product

code Product class 1992 19911 19901 19891 19881 1987 1982 1977

2451- Mobile homes 4 ------------------------------------------------- 472.1 3 752.6 4 032.2 3 988.6 4 128.5 4 044.4 3 578.9 3 175.4 24511 Manufactured (mobile) homes (35 feet or more in length) 3 --------- 976.4 3 308.3 3 497.9 3 470.4 3 570.0 3 476.0 3 141.7 2 895.7 24512 Manufactured (mobile) buildings, nonresidential 130.1 ------------------ 170.5 232.6 257.3 252.2 230.0 183.7 83.3 24510 Mobile homes, n.s.k. 365.6 ------------------------------------------ 273.8 301.7 260.8 306.4 338.4 253.5 196.4

2452- Prefabricated wood buildings 2 ---------------------------------- 064.2 1 787.7 2 013.5 2 175.5 2 371.2 2 334.3 1 286.5 1 863.8 24521 Components for stationary buildings (not sold as complete units) 212.3 -- 295.4 340.9 367.9 414.3 400.4 130.9 232.2 24522 Precut packages for stationary buildings (complete units) 406.3 --------- 280.8 326.0 333.9 367.9 374.9 287.2 362.9 24523 Stationary buildings sold as complete units and shipped in panel form -------------------------------------------------------- 355.5 295.2 372.1 412.2 421.3 403.8 278.6 652.7 24524 Stationary buildings shipped in three-dimensional assemblies 737.8 ------ 663.8 698.8 705.7 790.9 803.3 369.1 365.1 24520 Prefabricated wood buildings, n.s.k. 352.3 ----------------------------- 252.5 275.8 355.8 376.8 351.9 220.7 250.9

1Figures are estimates derived from a representative sample of manufacturing establishments. Standard errors associated with estimates are published in annual survey of manufactures

publications for this period.

24D–12nnWOOD BUILDINGS AND MOBILE HOMES MANUFACTURESmINDUSTRY SERIES
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Table 7. Materials Consumed by Kind: 1992 and 1987

[Includes cost of materials consumed or put into production by establishments classified only in this industry. For further explanation, see Cost of Materials in appendixes. For meaning of

abbreviations and symbols, see introductory text]

Material

code Material 1992 delivered cost

(million dollars)

1987 delivered cost

(million dollars)

INDUSTRY 2451, MOBILE HOMES

Materials, ingredients, containers, and supplies 2 --------------- 828.9 2 558.1

330001 Metal mill shapes and forms, including castings (castings, aluminum, etc.) 40.9 -- 70.7

344451 Metal siding, including aluminmum, steel -------------------------------- 104.9 88.1

343201 Metal plumbing fixtures, fittings, and trim (including enameled) 40.1 ------------- 32.1

344201 Metal doors and door units, windows and window units 112.3 ------------------- 82.7

345001 Bolts, nuts, screws, washers, rivets, and screw machine products 42.4 ---------- 35.9

308013 Plastics fabricated pipe and pipe fittings --------------------------------- 50.1 31.8 243056 Plywood ------------------------------------------------------------- 50.4 75.7 249310 Particleboard (wood) -------------------------------------------------- 68.9 68.3 249322 Oriented strand board (OSB) and waferboard ---------------------------- 64.3 30.3 327511 Gypsum building board ------------------------------------------------ 133.7 117.5

242103 Dressed lumber ------------------------------------------------------- 273.1 181.4

243105 Wood millwork, including molding, doors, and windows ------------------- 67.5 46.0

243401 Kitchen cabinets, wood ------------------------------------------------ 50.4 34.8

227001 Floor coverings, textile ------------------------------------------------ 83.3 64.3

399601 Linoleum and other hard-surfaced floor covering ------------------------- 29.3 27.8

190000 Heating equipment and air-conditioners, including heat pumps 58.4 ------------- 58.2

364002 Current-carrying wiring devices, including switches, connectors, lampholders,

etc.----------------------------------------------------------------- 74.1 56.2

Insulating materials:

329602 Mineral fiber blankets, batts, and boards ------------------------------ 64.8 62.6

190046 Loose fill (mineral fiber, cellulose fiber, and other) ---------------------- 28.6 17.6

342940 Builders’ hardware, including door locks, locksets, lock trim, miscellaneous

sash, screen hardware, etc. ------------------------------------------- 30.3 29.1

251003 Household-type furniture, including tables, sofas, beds, mattresses, etc. 33.0 ---- 52.7

363001 Household appliances, including refrigerators, cooking equipment, and other

household appliances; exc. air-conditioners ----------------------------- 132.7 125.5

371411 Trailer axles, wheels, brakes, undercarriages, and other metal vehicular

parts --------------------------------------------------------------- 157.2 109.7

301101 Pneumatic tires and inner tubes ---------------------------------------- 42.6 31.1

970099 All other materials and components, parts, containers, and supplies 348.2 -------- 346.2

971000 Materials, ingredients, containers, and supplies, n.s.k. 2 -------------------- 647.5 681.8

Material

code Material

1992 1987

Quantity1

Delivered cost

(million

dollars) Quantity1

Delivered cost

(million

dollars)

INDUSTRY 2452, PREFABRICATED WOOD

BUILDINGS

Materials, ingredients, containers, and supplies --------------- (X) 1 113.7 (X) 1 364.3

Rough lumber: 242110 Hardwood mil bd ft ------------------------------------------------ -- (S) 24.6 (S) 23.9

242121 Softwood mil bd ft ------------------------------------------------ -- 190.5 61.0 *100.4 27.4

Dressed lumber: 242117 Hardwood mil bd ft ------------------------------------------------ -- (S) 12.5 *128.2 33.4

242128 Softwood mil bd ft ------------------------------------------------ -- **325.0 128.0 (S) 258.5

243601 Softwood plywood mil sq ft (3/8

in. basis)--

----------------------------------------

**113.9 37.7 **247.2 68.8

327511 Gypsum building board ------------------------------------------------ (X) 16.7 (X) 27.2

342940 Builders’ hardware, including door locks, locksets, lock trim,

miscellaneous sash, screen hardware, etc. ----------------------------- (X) 15.5 (X) 29.3

329601 Mineral wool insulation (fibrous glass, rock wool, etc.) -------------------- (X) 13.5 (X) 19.4

190056 Windows and window units, including wood, metal, and

vinyl thousands ---------------------------------------------------- -- *405.8 54.9 (NA) 55.0

Doors and door units:

243103 Wood-------------------------------------------------------------- (X) 15.0 (X) 22.1

344211 Metal thousands -------------------------------------------------- -- **83.2 13.7 **203.0 25.5

243401 Kitchen cabinets, wood ------------------------------------------------ (X) 30.3 (X) (3)

249300 Reconstituted wood products, including particleboard,

oriented strand board, medium density fiberboard, and

hardboard----------------------------------------------------------- (X) 22.4 (X) (3)

344451 Metal siding, including aluminum, steel ---------------------------------- (X) 39.0 (X) 16.2

344113 Fabricated structural iron, steel, and aluminum, including

truss plates --------------------------------------------------------- (X) 15.5 (X) 39.2

364002 Current-carrying wiring devices, including switches,

connectors, lampholders ---------------------------------------------- (X) 17.5 (X) (3)

363001 Household appliances, including refrigerators, cooking

equipment, and other household appliances; exc. airconditioners --------------------------------------------------------- (X) 7.9 (X) (3)

227001 Floor coverings, textile ------------------------------------------------ (X) 18.6 (X) (3)

970099 All other materials and components, parts, containers, and

supplies------------------------------------------------------------- (X) 184.1 (X) 3 r271.0 971000 Materials, ingredients, containers, and supplies, n.s.k. 2 -------------------- (X) 385.4 (X) 447.4

1For some establishments, data have been estimated from central unit values which are based on quantity-value relationships of reported data. The following symbols are used when

percentage of each quantity figure estimated in this manner equals or exceeds 10 percent of published figure: *10 to 19 percent estimated; **20 to 29 percent estimated. If 30 percent or more is

estimated, figure is replaced by (S). 2Total cost of materials of establishments that did not report detailed materials data, including establishments that were not mailed a form.

3For 1987, data were included in material code 970099.

MANUFACTURESmINDUSTRY SERIES WOOD BUILDINGS AND MOBILE HOMES nn24D–13
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Appendix A.

Explanation of Terms

This appendix is in two sections. Section 1 includes items requested of all establishments mailed census of

manufactures forms including annual survey of manufactures (ASM) forms. Note that this section also includes several

items (number of establishments and companies, value added, classes of products, and specialization and coverage ratios)

not included on the report forms but derived from information collected on the forms. Section 2 covers supplementary items

requested only from establishments included in the ASM sample. Results of the supplementary ASM inquiries are included

in table 3c of this report.

SECTION 1. ITEMS COLLECTED OR DERIVED BASED ON ALL CENSUS OF MANUFACTURES

(INCLUDING ASM) REPORT FORMS

Number of establishments and companies. A separate

report was required for each manufacturing establishment

(plant) with one employee or more. An establishment is

defined as a single physical location where manufacturing

is performed. A company, on the other hand, is defined as

a business organization consisting of one establishment or

more under common ownership or control.

If the company operated at different physical locations,

even if the individual locations were producing the same

line of goods, a separate report was requested for each

location. If the company operated in two or more distinct

lines of manufacturing at the same location, a separate

report was requested for each activity.

An establishment not in operation for any portion of the

year was requested to return the report form with the

proper notation in the ‘‘Operational Status’’ section of the

form. In addition, the establishment was requested to

report data on any employees, capital expenditures, inventories, or shipments from inventories during the year.

In this report, data are shown for establishments in

operation at any time during the year. A comparison with

the number of establishments in operation at the end of

the year will be provided in the Introduction of the General

Summary subject report.

Employment and related items. The report forms

requested separate information on production workers for

a specific payroll period within each quarter of the year and

on other employees as of the payroll period which included

the 12th of March.

All employees. This item includes all full-time and

part-time employees on the payrolls of operating manufacturing establishments during any part of the pay period

which included the 12th of the months specified on the

report form. Included are all persons on paid sick leave,

paid holidays, and paid vacations during these pay

periods. Officers of corporations are included as employees; proprietors and partners of unincorporated firms are

excluded. The ‘‘all employees’’ number is the average

number of production workers plus the number of other

employees in mid-March. The number of production workers is the average for the payroll periods including the 12th

of March, May, August, and November.

Production workers. This item includes workers (up

through the line-supervisor level) engaged in fabricating,

processing, assembling, inspecting, receiving, storing, handling, packing, warehousing, shipping (but not delivering),

maintenance, repair, janitorial and guard services, product

development, auxiliary production for plant’s own use (e.g.,

power plant), recordkeeping, and other services closely

associated with these production operations at the establishment covered by the report. Employees above the

working-supervisor level are excluded from this item.

All other employees. This item covers nonproduction

employees of the manufacturing establishment including

those engaged in factory supervision above the linesupervisor level. It includes sales (including driver salespersons), sales delivery (highway truckdrivers and their

helpers), advertising, credit, collection, installation and

servicing of own products, clerical and routine office

function, executive, purchasing, financing, legal, personnel

(including cafeteria, medical, etc.), professional, and technical employees. Also included are employees on the

payroll of the manufacturing establishment engaged in the

construction of major additions or alterations to the plant

and utilized as a separate work force.

In addition to reports sent to operating manufacturing

establishments, information on employment during the

payroll period which included March 12 and annual payrolls also was requested of auxiliary units (e.g., administrative offices, warehouses, and research and development

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laboratories) of multiestablishment companies. However,

these figures are not included in the totals for individual

industries shown in this report. They are included in the

General Summary and geographic area reports as a

separate category.

Payroll. This item includes the gross earnings of all

employees on the payrolls of operating manufacturing

establishments paid in the calendar year 1992. Respondents were told they could follow the definition of payrolls

used for calculating the Federal withholding tax. It includes

all forms of compensation, such as salaries, wages, commissions, dismissal pay, bonuses, vacation and sick leave

pay, and compensation in kind, prior to such deductions as

employees’ Social Security contributions, withholding taxes,

group insurance, union dues, and savings bonds. The total

includes salaries of officers of corporations; it excludes

payments to proprietors or partners of unincorporated

concerns. Also excluded are payments to members of

Armed Forces and pensioners carried on the active payrolls of manufacturing establishments.

The census definition of payrolls is identical to that

recommended to all Federal statistical agencies by the

Office of Management and Budget. It should be noted that

this definition does not include employers’ Social Security

contributions or other nonpayroll labor costs, such as

employees’ pension plans, group insurance premiums, and

workers’ compensation.

The ASM provides estimates of employers’ supplemental labor costs, both those required by Federal and State

laws and those incurred voluntarily or as part of collective

bargaining agreements. (Supplemental labor costs are

explained later in this appendix.)

As in the case of employment figures, the payrolls of

separate auxiliary units of multiestablishment companies

are not included in the totals for individual industries or

industry groups.

Production-worker hours. This item covers hours worked

or paid for at the plant, including actual overtime hours (not

straight-time equivalent hours). It excludes hours paid for

vacations, holidays, or sick leave.

Cost of materials. This term refers to direct charges

actually paid or payable for items consumed or put into

production during the year, including freight charges and

other direct charges incurred by the establishment in

acquiring these materials. It includes the cost of materials

or fuel consumed, whether purchased by the individual

establishment from other companies, transferred to it from

other establishments of the same company, or withdrawn

from inventory during the year.

The important components of this cost item are (1) all

raw materials, semifinished goods, parts, containers, scrap,

and supplies put into production or used as operating

supplies and for repair and maintenance during the year,

(2) electric energy purchased, (3) fuels consumed for heat,

power, or the generation of electricity, (4) work done by

others on materials or parts furnished by manufacturing

establishments (contract work), and (5) products bought

and resold in the same condition. (See discussion of

duplication of data below.)

Specific materials consumed. In addition to the total

cost of materials, which every establishment was required

to report, information also was collected for most manufacturing industries on the consumption of major materials

used in manufacturing. The inquiries were restricted to

those materials which were important parts of the cost of

production in a particular industry and for which cost

information was available from manufacturers’ records.

Information on the establishments consuming less than a

specified amount (usually $25,000) of a specific material

were not requested to report consumption of that material

separately. Also, the cost of materials for the small establishments for which either administrative records or short

forms were used was imputed as ‘‘not specified by kind.’’

(See Census of Manufactures for the importance of

administrative records in the industry.)

Value of shipments. This item covers the received or

receivable net selling values, f.o.b. plant (exclusive of

freight and taxes), of all products shipped, both primary

and secondary, as well as all miscellaneous receipts, such

as receipts for contract work performed for others, installation and repair, sales of scrap, and sales of products

bought and resold without further processing. Included are

all items made by or for the establishments from materials

owned by it, whether sold, transferred to other plants of the

same company, or shipped on consignment. The net

selling value of products made in one plant on a contract

basis from materials owned by another was reported by

the plant providing the materials.

In the case of multiunit companies, the manufacturer

was requested to report the value of products transferred

to other establishments of the same company at full

economic or commercial value, including not only the

direct cost of production but also a reasonable proportion

of ‘‘all other costs’’ (including company overhead) and

profit. (See discussion of duplication of data below.)

Individual products. As in previous censuses, data

were collected for most industries on the quantity and

value of individual products shipped. In the 1992 census

program, information was collected on the output of almost

11,000 individual product items. The term ‘‘product,’’ as

used in the census of manufactures, represents the finest

level of detail for which output information was requested.

Consequently, it is not necessarily synonymous with the

term ‘‘product’’ as used in the marketing sense. In some

cases, it may be much more detailed and, in other cases,

it is more aggregative. For example, ‘‘pharmaceutical

preparations’’ was distributed into over 100 terms; whereas,

‘‘motor gasoline’’ was reported as a single item.

Approximately 6,300 of the product items were listed

separately on the 1992 census report forms. Data for

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about 4,500 products were obtained in the monthly, quarterly, or annual surveys comprising the Current Industrial

Reports series of the Census Bureau. Totals for the year

1992 for these items, as derived from the commodity

surveys, are shown in the ‘‘products shipped’’ table.

The list of products for which separate information was

collected was prepared after consultation with industry and

government representatives. Comparability with previous

figures was given considerable weight in the selection of

product categories so that comparable 1987 information is

presented for most products.

Typically, both quantity and value of shipments information were collected. However, if quantity was not significant

or could not be reported by manufacturers, only value of

shipments was collected.

Shipments include both commercial shipments and

transfers of products to other plants of the same company.

For industries in which a considerable portion of the total

shipments is transferred to other plants of the same

company, separate information on interplant transfers also

was collected. Moreover, for products that are used to a

large degree within the same establishment as materials or

components in the fabrication of other products, total

production and often consumption of the item within the

plant was collected. Typically, the information on production also was collected for products for which there are

significant differences between total production and shipments in a given year because of wide fluctuations in

finished goods inventories. Other measures of output of

products with long production cycles were used as appropriate and feasible.

Classes of products. To summarize the product information, the separate products were aggregated into classes

of products that, in turn, were grouped into all primary

products of each industry. The code structure used is a

seven-digit number for the individual product, a five-digit

number for the class of product, and a four-digit number for

the total primary products in an industry. (See Census of

Manufactures, Industry Classification of Establishments,

for application of the coding structure to the assignment of

SIC codes for establishments.)

In the 1992 census, the 11,000 products were grouped

into approximately 1,500 separate classes on the basis of

general similarity of manufacturing processes, types of

materials used, etc. However, the grouping of products

was affected by the economic significance of the class

and, in some cases, dissimilar products were grouped

because the products were not sufficiently significant to

warrant separate classes.

Duplication in cost of materials and value of shipments. The aggregate of the cost of materials and value

of shipments figures for industry groups and for all manufacturing industries includes large amounts of duplication

since the products of some industries are used as materials by others. This duplication results, in part, from the

addition of related industries representing successive stages

in the production of a finished manufactured product.

Examples are the addition of flour mills to bakeries in the

food group and the addition of pulp mills to paper mills in

the paper and allied products group of industries. Estimates of the overall extent of this duplication indicate that

the value of manufactured products exclusive of such

duplication (the value of finished manufactures) tends to

approximate two-thirds of the total value of products

reported in the annual survey.

Duplication of products within individual industries is

significant within a number of industry groups, e.g., machinery and transportation industries. These industries frequently include complete machinery and their parts. In this

case, the parts made for original equipment are materials

consumed for assembly plants in the same industry.

Even when no significant amount of duplication is

involved, value of shipments figures are deficient as measures of the relative economic importance of individual

manufacturing industries or geographic areas because of

the wide variation in ratio of materials, labor, and other

processing costs of value of shipments, both among

industries and within the same industry.

Before 1962, cost of materials and value of shipments

were not published for some industries which included

considerable duplication. Since then, these data have

been published for all industries at the U.S. level and

beginning in 1964, for all geographic levels.

Value added by manufacture. This measure of manufacturing activity is derived by subtracting the cost of

materials, supplies, containers, fuel, purchased electricity,

and contract work from the value of shipments (products

manufactured plus receipts for services rendered). The

result of this calculation is adjusted by the addition of value

added by merchandising operations (i.e., the difference

between the sales value and the cost of merchandise sold

without further manufacture, processing, or assembly) plus

the net change in finished goods and work-in-process

between the beginning- and end-of-year inventories.

For those industries where value of production is collected instead of value of shipments (see footnote in table

1a), value added is adjusted only for the change in

work-in-process inventories between the beginning and

end of year. For those industries where value of work done

is collected, the value added does not include an adjustment for the change in finished goods or work-in-process

inventories.

‘‘Value added’’ avoids the duplication in the figure for

value of shipments that results from the use of products of

some establishments as materials by others. Value added

is considered to be the best value measure available for

comparing the relative economic importance of manufacturing among industries and geographic areas.

New and used capital expenditures. For establishments in operation and any known plants under construction, manufacturers were asked to report their new expenditures for (1) permanent additions and major alterations to

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manufacturing establishments, and (2) machinery and

equipment used for replacement and additions to plant

capacity if they were of the type for which depreciation

accounts were ordinarily maintained.

The totals for new expenditures include expenditures

leased from nonmanufacturing concerns through capital

leases. New facilities owned by the Federal Government

but operated under contract by private companies, and

plant and equipment furnished to the manufacturer by

communities and nonprofit organizations are excluded.

Also excluded are expenditures for used plant and equipment (although reported in the census), expenditures for

land, and cost of maintenance and repairs charged as

current operating expenses.

Manufacturers also were requested to report the value

of all used buildings and equipment purchased during the

year at the purchase price. For any equipment or structure

transferred for the use of the reporting establishment by

the parent company or one of its subsidiaries, the value at

which it was transferred to the establishment was to be

reported. Furthermore, if the establishment changed ownership during the year, the cost of the fixed assets (building

and equipment) was to be reported under used capital

expenditures.

Total expenditures for used plant and equipment is a

universe figure; it is collected on all census forms. However, the breakdown of this figure between expenditures

for used buildings and other structures and expenditures

for used machinery and equipment is collected only on the

ASM form. The data for total new capital expenditures,

new building expenditures, and new machinery expenditures, as well as the data for total used expenditures, are

shown in table 3b.

End-of-year inventories. Respondents were asked to

report their 1991 and 1992 end-of-year inventories at cost

or market. Effective with the 1982 Economic Census, this

change to a uniform instruction for reporting inventories

was introduced for all sector reports. Prior to 1982, respondents were permitted to value inventories using any generally accepted accounting method (FIFO, LIFO, market,

to name a few). In 1982, LIFO users were asked to first

report inventory values prior to the LIFO adjustment and

then to report the LIFO reserve and the LIFO value after

adjustment for the reserve.

Because of this change in reporting instructions, the

1982 through 1992 data for inventories and value added by

manufacture included in the tables of this report are not

comparable to the prior-year data shown in table 1a of this

report and in historical census of manufactures and annual

survey of manufactures publications.

In using inventory data by stage of fabrication for ‘‘all

industries’’ and at the two-digit industry level, it should be

noted that an item treated as a finished product by an

establishment in one industry may be reported as a raw

material by another establishment in a different industry.

For example, the finished-product inventories of a steel

mill would be reported as raw materials by a stamping

plant. Such differences are present in the inventory figures

by stage of fabrication shown for individual industries,

industry groups, and ‘‘all manufacturing’’, which are aggregates of figures reported by establishments in specified

industries.

Specialization and coverage ratios. These items are not

collected on the report forms but are derived from the data

shown in table 5b. An establishment is classified in a

particular industry if its shipments of primary products of

that industry exceed in value its shipments of the products

of any other single industry.

An establishment’s shipments include those products

assigned to an industry (primary products), those considered primary to other industries (secondary products), and

receipts for miscellaneous activities (merchandising, contract work, resales, etc.). Specialization and coverage

ratios have been developed to measure the relationship of

primary product shipments to the data on shipments for

the industry shown in tables 1a through 5a and data on

product shipments shown in tables 6a through 6c.

Specialization ratio represents the ratio of primary product shipments to total product shipments (primary and

secondary, excluding miscellaneous receipts) for the establishments classified in the industry.

Coverage ratio represents the ratio of primary products

shipped by the establishments classified in the industry to

the total shipments of such products that are shipped by all

manufacturing establishments wherever classified.

SECTION 2. ITEMS COLLECTED ONLY ON ASM REPORT FORMS

The following items were collected only from establishments included in the ASM sample:

Supplemental labor costs. Supplemental labor costs

are divided into legally required expenditures and payments for voluntary programs. The legally required portion

consists primarily of Federal old age and survivors’ insurance, unemployment compensation, and workers’ compensation. Payments for voluntary programs include all programs not specifically required by legislation whether they

were employer initiated or the result of collective bargaining. They include the employer portion of such plans as

insurance premiums, premiums for supplemental accident

and sickness insurance, pension plans, supplemental unemployment compensation, welfare plans, stock purchase

plans on which the employer payment is not subject to

withholding tax, and deferred profit-sharing plans. They

exclude such items as company-operated cafeterias, in-plant

medical services, free parking lots, discounts on employee

purchases, and uniforms and work clothing for employees.

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While the excluded items do benefit employees and all or

part of their cost generally is similar to the items covered in

the ASM labor costs statistics, accounting records generally do not provide reliable figures on net employee

benefits of these types.

Retirements of depreciable assets. Included in this

item is the gross value of assets sold, retired, scrapped,

destroyed, etc., during 1992. When a complete operation

or establishment changed ownership, the respondent was

instructed to report the value of the assets sold at the

original cost as recorded in the books of the seller. The

respondent also was requested to report retirements of

equipment or structures owned by a parent company that

the establishment was using as if it were a tenant.

Depreciation charges for fixed assets. This item includes

depreciation and amortization charged during the year

against assets. Depreciation charged against fixed assets

acquired since the beginning of the year and against

assets sold or retired during the year are components of

this category. Respondents were requested to make certain that they did not report accumulated depreciation.

Rental payments. Total rental payments is collected on

all census forms. However, the breakdown between rental

payments for buildings and other structures and rental

payments for machinery and equipment is collected only

on the ASM forms. This item includes rental payments for

the use of all items for which depreciation reserves would

be maintained if they were owned by the establishment,

e.g., structures and buildings, and production, office, and

transportation equipment. Excluded are royalties and other

payments for the use of intangibles and depletable assets,

and land rents where separable.

When an establishment of a multiestablishment company was charged rent by another part of the same

company for the use of assets owned by the company, it

was instructed to exclude that cost from rental payments.

However, the book value (original cost) of these companyowned assets was to be reported as assets of the establishment at the end of the year.

If there were assets at an establishment rented from

another company and the rents were paid centrally by the

head office of the establishment, the company was instructed

to report these rental payments as if they were paid directly

by the establishment.

Depreciable assets. Total value of gross depreciable

assets is collected on all census forms. However, the

detail for depreciable assets is collected only on the ASM

forms. The data encompass all fixed depreciable assets on

the books of establishments at the beginning and end of

the year. The values shown (book value) represent the

actual cost of assets at the time they were acquired,

including all costs incurred in making the assets usable

(such as transportation and installation). Included are all

buildings, structures, machinery, and equipment (production, office, and transportation equipment) for which depreciation reserves are maintained. Excluded are nondepreciable capital assets, including inventories and intangible

assets, such as timber and mineral rights.

The definition of fixed depreciable assets is consistent

with the definition of capital expenditures. For example,

expenditures include actual capital outlays during the year,

rather than the final value of equipment put in place and

buildings completed during the year. Accordingly, the value

of assets at the end of the year includes the value of

construction in progress. In addition, respondents were

requested to make certain that assets at the beginning of

the year plus new and used capital expenditures, less

retirements, equalled assets at the end of the year.

New and used capital expenditures. The data for total

new capital expenditures, new building expenditures, new

machinery expenditures, and total used capital expenditures are collected on all census forms. However, the

breakdown between expenditures for used buildings and

other structures and expenditures for used machinery and

equipment is collected only on the ASM form. (See further

explanation on capital expenditures in section 1.)

Quantity of electric energy consumed for heat and

power. Data on the cost of purchased electric energy

are collected on all census forms. However, data on the

quantity of purchased electric energy are collected only on

the ASM forms. In addition, information is collected on the

quantity of electric energy generated by the establishment

and the quantity of electric energy sold or transferred to

other plants of the same company.

Breakdown of new capital expenditures for machinery

and equipment. ASM establishments were requested to

separate their capital expenditures for new machinery and

equipment into (1) automobiles, trucks, etc., for highway

use, (2) computers and peripheral data processing equipment, and (3) all other.

The category ‘‘automobiles, trucks, etc., for highway

use’’ is intended to measure expenditures for vehicles

designed for highway use that were acquired through a

purchase or lease-purchase agreement. Vehicles normally

operating off public highways (vehicles specifically designed

to transport materials, property, or equipment on mining,

construction, logging, and petroleum development projects)

are excluded from this item.

Foreign content of cost of materials. Establishments

included in the ASM sample panel were requested to

provide information on foreign-made materials purchased

or transferred from foreign sources. This includes materials acquired from a central warehouse or other domestic

establishment of the same company but made in an

operation outside of the 50 States, District of Columbia,

Puerto Rico, or U.S. territories.

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Cost of purchased services. ASM establishments were

requested to provide information on the cost of purchased

services for the repair of buildings and other structures, the

repair of machinery, communication services, legal services, accounting and bookkeeping services, advertising,

software and other data processing services, and refuse

removal. Each of these items reflect the costs paid directly

by the establishment, and exclude salaries paid to employees of the establishment for these services.

Included in the cost of purchased services for the repair

of buildings and machinery are payments made for all

maintenance and repair work on buildings and equipment,

such as painting, roof repairs, replacing parts, and overhauling equipment. Such payments made to other establishments of the same company and for repair and maintenance of any leased property also are included. Extensive

repairs or reconstruction that were capitalized are considered capital expenditures for used buildings and machinery

and are, therefore, excluded from this item. Repair and

maintenance costs provided by an owner as part of a

rental contract or incurred directly by an establishment in

using its own work force also are excluded.

Included in the cost of purchased advertising services

are payments for printing, media coverage, and other

advertising services and materials.

Included in the cost of purchased software and other

data processing services are all purchases by the establishment from other companies. Excluded are services

provided by other establishments of the same company

(such as by a separate data processing unit).

Included in the cost of purchased refuse removal services are all costs of refuse removal services paid by the

establishment, including costs for hazardous waste removal

or treatment. Excluded are all costs included in rental

payments or as capital expenditures.

Three basic approaches were utilized to produce these

statistics.

1. For items 1 through 6, data were estimated (imputed)

for all non-ASM establishments using the available

data in the establishment record and industry-based

parameters. The statistics were then generated by

simply tabulating all census records including the

imputed value for non-ASM establishments and the

unweighted value for ASM establishments. Separate

imputation rates were developed and are shown in the

table. For quantity of purchased electricity for heat and

power (item 7), a similar procedure was used; however, the imputation parameters were geographicallybased instead of industry-based. For quantities of

generated less sold electricity, no imputation was

performed for non-ASM establishments. The estimates

for these items are simply tabulations of unweighted

ASM values.

Since the published statistics for these items were

developed from the complete census universe and not

just the ASM establishments, there are no sampling

variances associated with these statistics. However,

there is an unknown level of bias for each of the items

due to the imputation of the non-ASM establishments.

This bias is felt to be small due to the strong correlation between the items being imputed and the collected items that were used to generate the impute

values.

2. For items 8 and 9, the estimates were developed using

a ratio estimation methodology. For item 8, an estimate of the breakout of new capital expenditures for

machinery and equipment into the three categories

was made from ASM establishments reporting these

categories. The estimated proportions were then applied

to the corresponding census value for new capital

expenditures for machinery and equipment to produce

the estimates.

The estimates for item 9, foreign content of cost of

materials, were developed in a similar manner based

on costs of parts, supplies, and components (item 5a)

as the control total for the three categories.

For items 8 and 9, an adjustment ratio of the

following form was computed:

Rj = NMc

TMEasm

where:

NMc = the census value of new capital

expenditures for machinery and

equipment

TMEasm = the weighted ASM value of new

capital expenditures for machinery

and equipment from reporters of

the detailed breakout data

3. For item 10, cost of purchased services, the estimates

were made by simply tabulating weighted data for all

the ASM records that reported the item. A response

coverage ratio (a measure of the extent to which

respondents reported for each item) is shown in table

3c for the three types of services. It is derived for each

item by calculating the ratio of the weighted employment (establishment data multiplied by sample weight,

see appendix B) for those ASM establishments that

reported the specific inquiry to the weighted total

employment for all ASM establishments classified in

the industry.

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Appendix B.

Annual Survey of Manufactures Sampling and

Estimating Methodologies

DESCRIPTION OF SURVEY SAMPLE

The annual survey of manufactures (ASM) contains two

components. The mail portion of the survey is a probability

sample of about 64,000 manufacturing establishments

selected from a total of about 216,000 establishments.

These 216,000 establishments represent all manufacturing establishments of multiunit companies and all singleestablishment companies mailed schedules in the 1987

Census of Manufactures. This mail portion is supplemented annually by a Social Security Administration list of

new manufacturing establishments opened after 1987 and

a list of new multiunit manufacturing establishments identified from the Census Bureau’s Company Organization

Survey.

For the current panel, all establishments of companies

with 1987 shipments in manufacturing in excess of $500

million were included in the survey panel with certainty.

There are approximately 500 such companies collectively

accounting for approximately 18,000 establishments. For

the remaining portion of the mail survey, the establishment

was defined as the sampling unit. For this portion, all

establishments with 250 employees or more and establishments with a very large value of shipments also were

included in the survey panel with certainty. A total of

12,100 establishments were selected from this portion of

the universe with certainty. Therefore, of the 64,000 manufacturing establishments included in the ASM panel, approximately 31,000 are selected with certainty. These certainty

establishments collectively account for approximately 80

percent of the total value of shipments in the 1987 census.

Smaller establishments in the remaining portion of the

mail survey were sampled with probabilities ranging from

0.999 to 0.005 in accordance with mathematical theory for

optimum allocation of a sample. The probabilities of selection assigned to the smaller establishments were proportional to measures of size determined for each establishment. The measures of size depend directly upon each

establishment’s 1987 product class values and the historic

variability of the year-to-year shipments of each product

class. Product classes displaying more volatile year-toyear change in shipments at the establishment level were

sampled at a heavier rate.

This method of assigning measures of size was used in

order to maximize the precision (that is, minimize the

variance of estimates of the year-to-year change) in the

value of product class shipments. Implicitly, it also gave

weight differences in employment, value added, and other

general statistics, since these are highly correlated with

value of shipments. Individual sample selection probabilities were obtained by multiplying each establishment’s

final measure of size by an overall sampling fraction

coefficient calculated to yield a total expected sample size.

The sample selection procedure gave each establishment in the sampling frame an independent chance of

selection. This method of independent selection permits

the rotation of small establishments out of a given sample

panel without introducing a bias into the survey estimates.

The nonmail portion of the survey includes all singleestablishment companies that were tabulated as administrative records in the 1987 Census of Manufactures.

Although this portion contained approximately 134,000

establishments, it accounted for less than 2 percent of the

estimate for total value of shipments at the total manufacturing level. This portion was not sampled; rather, the data

for every establishment in this group were estimated based

on selected information obtained annually from the administrative records of the Internal Revenue Service and the

Social Security Administration. This administrative-records

information, which includes payroll, total employment, industry classification, and physical location of the establishment, was obtained under conditions which safeguard the

confidentiality of both tax and census records. Estimates

of data other than payroll and employment for these small

establishments were developed from industry averages.

The corresponding estimates for the mail and nonmail

establishments were added together, along with the baseyear differences, as defined in the Description of Estimating Procedure section, to produce the figures shown in this

publication.

DESCRIPTION OF ESTIMATING PROCEDURES

Most of the ASM estimates for the years 1988-1991

were computed using a difference estimation procedure.

For each item, a base-year difference was developed. This

base-year difference is equal to the difference between the

1987 census published number for an item total and the

linear ASM estimate of the total for 1987. The ASM linear

estimate was obtained by multiplying each sample establishment’s data by its sample weight (the reciprocal of its

probability of selection) and summing the weighted values.

These base-year differences were then added to the

corresponding current-year linear estimates, which include

the sum of the estimates for the mail and nonmail

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establishments, to produce the estimates for the years

1983-1991. Estimates developed by this procedure usually

are far more reliable than comparable linear estimates

developed from the current sample data alone.

However, the 1992 sample estimates for the purchased

service items, shown in table 3c, are strictly ASM linear

estimates developed only from ASM establishments that

reported the specific item.

The remaining estimates in table 3c, showing the breakdown of expenditures for new machinery and equipment

and costs of parts (separated into purchases from foreign

sources and purchases from domestic sources), were

computed as ratio estimates. To do this, linear estimates of

the new machinery detail items were developed from the

ASM establishments and were ratio adjusted to the corresponding census total for new machinery. In a similar

fashion, the ASM linear estimates of the detailed purchased materials items were ratio adjusted to the corresponding census total for cost of parts.

QUALIFICATIONS OF THE DATA

The estimates developed from the sample are apt to

differ somewhat from the results of a survey covering all

companies in the sampled lists but otherwise conducted

under essentially the same conditions as the actual sample

survey. The estimates of the magnitude of the sampling

errors (the differences between the estimates obtained

and the results theoretically obtained from a comparable,

complete-coverage survey) are provided by the standard

errors of the estimates.

The particular sample selected for the ASM is one of a

large number of similar probability samples that, by chance,

might have been selected under the same specifications.

Each of the possible samples would yield somewhat

different sets of results, and the standard errors are

measures of the variation of all the possible sample

estimates around the theoretical, comparable, completecoverage values.

Estimates of the standard errors have been computed

from the sample data for selected statistics in this report.

They are presented in the form of relative standard errors

(the standard errors divided by the estimated values to

which they refer).

In conjunction with its associated estimate, the relative

standard error may be used to define confidence intervals

(ranges that would include the comparable, completecoverage value for specified percentages of all the possible samples).

The complete-coverage value would be included in the

range:

1. From one standard error below to one standard error

above the derived estimate for about two-thirds of all

possible samples.

2. From two standard errors below to two standard errors

above the derived estimate for about 19 of 20 of all

possible samples.

3. From three standard errors below to three standard

errors above the derived estimate for nearly all samples.

An inference that the comparable, complete-survey

result would be within the indicated ranges would be

correct in approximately the relative frequencies shown.

Those proportions, therefore, may be interpreted as defining the confidence that the estimates from a particular

sample would differ from complete-coverage results by as

much as one, two, or three standard errors, respectively.

For example, suppose an estimated total is shown

as 50,000 with an associated relative standard error of 2

percent, that is, a standard error of 1,000 (2 percent of

50,000). There is approximately 67 percent confidence

that the interval 49,000 to 51,000 includes the completecoverage total, about 95 percent confidence that the

interval 48,000 to 52,000 includes the complete-coverage

total and almost certain confidence that the interval 47,000

to 53,000 includes the complete-coverage total.

In addition to the sample errors, the estimates are

subject to various response and operational errors: errors

of collection, reporting, coding, transcription, imputation for

nonresponse, etc. These operational errors also would

occur if a complete canvass were to be conducted under

the same conditions as the survey. Explicit measures of

their effects generally are not available. However, it is

believed that most of the important operational errors were

detected and corrected in the course of the Census

Bureau’s review of the data for reasonableness and consistency. The small operational errors usually remain. To

some extent, they are compensating in the aggregated

totals shown. When important operational errors were

detected too late to correct the estimates, the data were

suppressed or were specifically qualified in the tables.

As derived, the estimated standard errors included part

of the effect of the operational errors. The total errors,

which depend upon the joint effect of the sampling and

operational errors, are usually of the order of size indicated

by the standard error, or only moderately higher. However,

for particular estimates, the total error may considerably

exceed the standard errors shown.

The concept of complete coverage under the conditions

prevailing for the ASM is not identical to the complete

coverage of the census of manufactures, as the censuses

have been conducted. Nearly all types of operational

errors that affect the ASM also occur in the censuses. The

ASM and the censuses, are conducted under quite different conditions, and operational errors can be better controlled in the ASM than in the censuses. As a result, for

many of the census figures, the errors are of the same

order of size as the total errors of the corresponding

annual survey estimates. The differences between the

census and ASM operating conditions also disturb, to

some degree, the comparability of the ASM and census

data.

Any figures shown in the tables in this publication having

an associated standard error exceeding 15 percent may be

of limited reliability. However, the figure may be combined

with higher-level totals, creating a broader aggregate,

which then may be of acceptable reliability.

B–2 APPENDIX B MANUFACTURES—INDUSTRY SERIES
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Appendix C.

Product Code Reference Tables

Part 1.nnComparability of Product Classes and Product Codes That Changed: 1992 to 1987

1992 1987

24112 20 24112 28

24112 21 24112 28

24112 26 24112 23

24112 26 24112 28

24114 06 24114 08

24114 06 24114 10

24114 31 24114 15

24114 31 24114 29

24114 31 24114 33

24114 31 24114 35

24290 87 24290 61

24290 87 24290 83

24315 87 24315 98

24315 97 24315 98

24317 25 24317 21

24317 25 24317 31

1992 1987

24351 01 24351 00

24351 05 24351 00

24351 07 24351 00

24351 47 24351 00

24365 01 24365 00

24365 05 24365 00

24365 11 24365 00

24365 21 24365 00

24365 23 24365 00

24366 07 24366 00

24366 11 24366 00

24366 13 24366 00

24366 15 24366 00

24366 17 24366 00

24367 03 24367 00

24367 21 24367 00

24367 23 24367 00

24367 25 24367 00

1992 1987

24490 43 24490 41

24490 43 24490 51

24490 73 24490 71

24490 73 24490 81

24913 02 24913 01

24913 02 24913 03

24913 21 24913 15

24913 21 24913 19

24919 11 24919 01

24919 11 24919 03

24919 11 24919 09

24931 20 24931 12

24931 20 24931 14

24931 20 24931 16

24931 20 24931 18

24931 21 24931 07

24931 21 24931 09

24931 21 24931 19

1992 1987

24932 05 24932 00

24932 07 24932 00

24932 09 24932 00

24932 21 24932 00

24933 16 24933 15

24933 16 24933 18

24934 12 24934 00

24934 14 24934 00

24934 16 24934 00

24934 17 24934 00

24934 18 24934 00

24934 19 24934 00

24936 12 24936 14

24936 12 24936 15

24994 98 24994 61

24994 98 24994 79

24994 98 24994 99

Part 2.nnComparability of Product Classes and Product Codes That Changed: 1987 to 1992

1987 1992

24112 23 24112 26

24112 28 24112 20

24112 28 24112 21

24112 28 24112 26

24114 08 24114 06

24114 10 24114 06

24114 15 24114 31

24114 29 24114 31

24114 33 24114 31

24114 35 24114 31

24290 61 24290 87

24290 83 24290 87

24315 98 24315 87

24315 98 24315 97

24317 21 24317 25

24317 31 24317 25

1987 1992

24351 00 24351 01

24351 00 24351 05

24351 00 24351 07

24351 00 24351 47

24365 00 24365 01

24365 00 24365 05

24365 00 24365 11

24365 00 24365 21

24365 00 24365 23

24366 00 24366 07

24366 00 24366 11

24366 00 24366 13

24366 00 24366 15

24366 00 24366 17

24367 00 24367 03

24367 00 24367 21

24367 00 24367 23

24367 00 24367 25

1987 1992

24490 41 24490 43

24490 51 24490 43

24490 71 24490 73

24490 81 24490 73

24913 01 24913 02

24913 03 24913 02

24913 15 24913 21

24913 19 24913 21

24919 01 24919 11

24919 03 24919 11

24919 09 24919 11

24931 07 24931 21

24931 09 24931 21

24931 12 24931 20

24931 14 24931 20

24931 16 24931 20

24931 18 24931 20

24931 19 24931 21

1987 1992

24932 00 24932 05

24932 00 24932 07

24932 00 24932 09

24932 00 24932 21

24933 15 24933 16

24933 18 24933 16

24934 00 24934 12

24934 00 24934 14

24934 00 24934 16

24934 00 24934 17

24934 00 24934 18

24934 00 24934 19

24936 14 24936 12

24936 15 24936 12

24994 61 24994 98

24994 79 24994 98

24994 99 24994 98

Part 3.nnCurrent Industrial Reports by Product Code

[Not applicable for this report]

MANUFACTURESmINDUSTRY SERIES APPENDIX CnnC–1
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1992 CENSUS OF MANUFACTURES

Publications of the 1992 Census of Manufactures, containing

preliminary and final data on manufacturing establishments in the

United States, are described below. Publications order forms for

the specific reports may be obtained from any Department of

Commerce district office or from Data User Services Division,

Customer Services, Bureau of the Census, Washington, DC

20233-8300.

Preliminary Reports

Industry series—83 reports (MC92-I-20A(P) to -39D(P))

Preliminary industry data are issued in 83 separate reports

covering 459 industries. Preliminary summary data for the United

States and States are released in one report.

Final Reports

Industry series—83 reports (MC92-1-20A to -39D)

Each of the 83 reports provides information for a group of

related industries (‘‘dairy products’’ includes industries for butter,

cheese, milk, etc.). Final figures for the United States are shown

for each of the 459 manufacturing industries on quantity and

value of products shipped and materials consumed, cost of fuels

and electric energy, capital expenditures, assets, rents, inventories, employment, payroll, payroll supplements, hours worked,

value added by manufacture, number of establishments, and

number of companies. Comparative statistics for earlier years are

provided where available.

For each industry, data on value of shipments, value added by

manufacture, capital expenditures, employment, and payroll are

shown by employment-size class of establishment, State, and

degree of primary product specialization.

Geographic area series—51 reports (MC92-A-1 to -51)

A separate report is being published for each State and the

District of Columbia. Each report presents data for industry

groups and industries on value of shipments, cost of materials,

value added by manufacture, employment, payroll, hours worked,

new capital expenditures, and number of manufacturing establishments for the State, MA’s, counties, and selected places.

Comparative statistics for earlier census years are shown for the

State and large MA’s. Manufacturing totals are presented for

each county and for places with significant manufacturing activity.

Detailed statistics (including inventories, assets, rents, and energy

costs) are presented only in statewide totals.

Subject series—3 reports (MC92-S-1 to -3)

Each of the three reports contains detailed statistics for an

individual subject, such as concentration ratios in manufacturing,

manufacturers’ shipments to the Federal Government, and a

general national-level summary.

Reference series—1 report (MC92-R-1)

The Numerical List of Manufactured and Mineral Products

includes a description of the principal products and services

published in the 1992 Censuses of Manufactures and Mineral

Industries.

Location of Manufacturing Plants—1 report

(MC92-LM)

This report includes data for number of establishments by

four-digit SIC industry and by employment-size class for counties,

incorporated places of 2,500 inhabitants or more, and Zip Codes

for each State. This report is available only on compact disc-read

only memory (CD-ROM).

Analytical Reports—2 reports (AR92-1 and -2)

Exports From Manufacturing Establishments (AR92-1)

This report presents data on exports by two- and three-digit

SIC industry groups for the United States and States. Information

is presented on value of direct report shipments and estimates of

the employment required to manufacture these products. Included

are estimates of employment in manufacturing and nonmanufacturing establishments that supply parts, materials, and services

for production of manufactured exports.

Selected Characteristics of Manufacturing Establishments That Export (AR92-2)

This report presents data on the number of manufacturing

companies and establishments that export by major group, State,

employment size, and ratios of exports to shipments.

Electronic Media

All data included in the printed reports are available on

CD-ROM. The CD-ROM’s provide the same information found

in the reports as well as additional information not published in

the final reports, such as location of manufacturing plants.

Electronic media products are available for users who wish to

summarize, rearrange, or process large amounts of data. These

products, with corresponding technical documentation, are sold

by Data User Services Division, Customer Services, Bureau of

the Census, Washington, DC 20233-8300.

OTHER ECONOMIC CENSUSES REPORTS

Data on retail trade, wholesale trade, financial, insurance, real

estate, service industries, construction industries, mineral

industries, transportation, communications, utilities, enterprise

statistics, minority-owned businesses, and women-owned

businesses also are available from the 1992 Economic Census.

A separate series of reports covers the census of outlying

areas—Puerto Rico, Virgin Islands of the United States, Guam,

and the Commonwealth of the Northern Mariana Islands. Separate announcements describing these reports are available free

of charge from Data User Services Division, Customer Services,

Bureau of the Census, Washington, DC 20233-8300.

Publication Program