**November 21, 1997**

Contract \# **TW-0928**

SPECIAL SPECIFICATION

SECTION 06100-S

[ROUGH CARPENTRY]{.underline}

Page

PART 1 - GENERAL

1.01 Description of Work

1.02 References

1.03 Submittals

1.04 Quality Assurance

1.05 Delivery, Storage, and Handling

PART 2 - PRODUCTS

2.01 Lumber, General

2.02 Wood-Preservative-Treated Materials

2.03 Fire-Retardant-Treated Materials

2.04 Miscellaneous Lumber

2.05 Wood-Based Structural-Use Panels, General

2.06 Concealed, Performance-Rated Structural-Use Panels

2.07 Structural-Use Panels for Backing

2.08 Fasteners

2.09 Metal Framing Anchors

PART 3 - EXECUTION

3.01 Installation, General

3.02 Wood Grounds, Nailers, Blocking, and Sleepers

3.03 Installation Of Structural-Use Panels

SPECIAL SPECIFICATION

SECTION 06100-S

[ROUGH CARPENTRY]{.underline}

# PART 1 - GENERAL

## 1.01 [DESCRIPTION OF WORK]{.underline}

[This Section includes]{.underline} the following :

A. Wood furring, grounds, nailers, and blocking.

B. Sheathing.

C. Fasteners and metal framing anchors.

## 1.02 [REFERENCES]{.underline}

A. [American Forest and Paper Association (AFPA)]{.underline}

Manual for Wood Frame Construction

B. [American National Standards Institute (ANSI)]{.underline}

A208.1 Mat-Formed Manufactured Panels

C. [American Plywood Association (APA)]{.underline}

Form E30 Design/Construction Guide: Residential and Commercial

D. [American Society of Mechanical Engineers (ASME)]{.underline}

B18.2.1 Square and Hex Bolts and Screws - Inch Series

B18.6.1 Wood Screws (Inch Series)

E. [American Society for Testing and Materials (ASTM)]{.underline}

A153 Specification for Zinc -Coating (Hot-Dip of Iron and Steel
Hardware)

A307 Specification for Carbon Steel Bolts and Studs, 60,000 PSI Tensile
Strength

A563 Specification for Carbon and Alloy Steel Nuts

A653 Specification for Steel Sheet, Zinc-Coated (Galvanized) or
Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

D245 Practice for Establishing Structural Grades and Related Allowable
Properties for Visually Graded Lumber

D2555 Test Method for Establishing Clear Wood Strength Values

F. [American Wood Preservers Association (AWPA)]{.underline}

C2 Lumber, Pressure Treatment

C9 Plywood, Pressure Treatment

C20 Structural Lumber, Fire-Retardant Pressure Treatment

C27 Plywood, Fire-Retardant Pressure Treatment

M4 Standard for the Care of Preservative-Treated Wood Products

G. [Federal Specification (FS)]{.underline}

FF-N-105B Nails, Brads, Staples and Spikes: Wire, Cut and Wrought

H. [International Conference of Building Officials (ICBO)]{.underline}

Uniform Building Code (UBC) Chapter 23 Wood

I. [U.S. Department of Commerce, National Institute of Standards and
Technology]{.underline}

PS 1 US Product Standard for Construction and Industrial Plywood

PS 2 Performance Standard for Wood-Based Structural-Use Panels

PS 20 American Softwood Lumber Standard (ASLS)

## 1.03 [SUBMITTALS]{.underline}

A. [General]{.underline}: Submit the following in accordance with the
conditions of Contract and Division 1, Section 1300 "Descriptive
Submittals."

B. [Product Data]{.underline}: Submit manufacturer's product data for
each distinct product specified.

C. [Material certificates for dimension lumber]{.underline} specified to
comply with minimum allowable unit stresses. Indicate species and grade
selected for each use, and design values approved by American Lumber
Standards Committee's (ALSC) Board of Review.

D. [Wood treatment data]{.underline} as follows, including chemical
treatment manufacturer's warranty and instructions for handling,
storing, installing, and finishing treated materials:

1\. [For each type of preservative-treated wood product]{.underline},
include certification by treating plant stating type of preservative
solution and pressure process used, net amount of preservative retained,
and compliance with applicable standards.

2\. [For waterborne-treated products]{.underline}, include statement
that moisture content of treated materials was reduced to levels
indicated before shipment to Project site.

3\. [For fire-retardant-treated wood products]{.underline}, include
certification by treating plant that treated materials comply with
specified standard and other requirements as well as data relative to
bending strength, stiffness, and fastener-holding capacities of treated
materials.

## 1.04 [QUALITY ASSURANCE]{.underline}

[Single-Source Responsibility for Fire-Retardant-Treated
Wood]{.underline}: Obtain each type of fire-retardant-treated wood
product from one source and by single producer.

## 1.05 [DELIVERY, STORAGE, AND HANDLING]{.underline}

A. [Deliver wood products]{.underline} bundled or crated to provide
adequate protection during transit and job storage, with required grade
marks clearly identifiable. Inspect wood products for damage upon
delivery. Remove and replace damaged materials.

B. [Keep materials]{.underline} under cover and dry. Protect from
weather and contact with damp or wet surfaces. Stack lumber, plywood,
and other panels. Provide for air circulation within and around stacks,
and under temporary coverings.

For lumber and plywood pressure treated with waterborne chemicals, place
spacers between each bundle to provide air circulation.

C. [Protect sheet materials]{.underline} during handling to prevent
breaking of corners and damage to surfaces.

# PART 2 - PRODUCTS

## 2.01 [LUMBER, GENERAL]{.underline}

A. [Lumber Standards]{.underline}: Comply with PS 20, "American Softwood
Lumber Standard," and with applicable grading rules of inspection
agencies certified by ALSC's Board of Review. Lumber design values are
to comply with ASTM D245 and ASTM D2555.

B. [Inspection Agencies]{.underline}: Inspection agencies, and their
grading rules include the following:

1\. [Northeastern Lumber Manufactures Association (NELMA)]{.underline}

Standard Grading Rules

2\. [National Lumber Grades Authority (NLGA)(Canadian)]{.underline}

Standard Grading Rules

3\. [Redwood Inspection Service (RIS)]{.underline}

Standard Specifications for Grades of California Redwood Lumber

4\. [Southern Pine Inspection Bureau (SPIB)]{.underline}

Standard Grading Rules for Southern Pine Lumber

5\. [West Coast Lumber Inspection Bureau (WCLIB)]{.underline}

No. 17 Standard Grading Rules for West Coast Lumber

6\. [Western Wood Products Association (WWPA)]{.underline}

Western Lumber Grading Rules

C. [Grade Stamps]{.underline}: Provide lumber with each piece factory
marked with grade stamp of inspection agency evidencing compliance with
grading rule requirements and identifying grading agency, grade,
species, moisture content at time of surfacing, and mill.

For exposed lumber, furnish pieces with grade stamps applied to ends or
back of each piece, or omit grade stamps and provide grade-compliance
certificates issued by inspection agency.

D. [Where nominal sizes are indicated]{.underline}, provide actual sizes
required by PS 20 for moisture content specified. Where actual sizes are
indicated, they are minimum dressed sizes for dry lumber.

1\. [Provide dressed lumber]{.underline}, surfaced four sides (S4S),
unless otherwise indicated.

2\. [Provide dry lumber]{.underline} with 19 percent maximum moisture
content at time of dressing for 2-inch nominal (38 mm actual) thickness
or less, unless otherwise indicated.

## 2.02 [WOOD-PRESERVATIVE-TREATED MATERIALS]{.underline}

A. [General]{.underline}: Where lumber or plywood is indicated as
preservative treated or is specified to be treated, comply with
applicable requirements of AWPA C2 (lumber) and AWPA C9 (plywood). Mark
each treated item with Quality Mark Requirements of inspection agency
approved by ALSC's Board of Review.

For exposed items indicated to receive stained finish, use chemical
formulations that do not bleed through, contain colorants, or otherwise
adversely affect finishes.

B. [Pressure treat aboveground items]{.underline} with waterborne
preservatives to minimum retention of 0.25 lb/cu. ft. (4.0 kg/cu. m.).
After treatment, kiln-dry lumber and plywood to maximum moisture content
of 19 and 15 percent, respectively. Treat indicated items and the
following:

1\. Wood cants, nailers, curbs, equipment support bases, blocking,
stripping, and similar members in connection with roofing, flashing,
vapor barriers, and waterproofing.

2\. Wood sills, sleepers, blocking, furring, stripping, and similar
concealed members in contact with masonry or concrete.

C. [Pressure treat wood members in contact with ground]{.underline} or
freshwater with waterborne preservatives to minimum retention of 0.40
lb/cu. ft. (6.4 kg/cu. m.).

D. [Complete fabrication]{.underline} of treated items before treatment,
where possible. If cut after treatment, apply field treatment complying
with AWPA M4 to cut surfaces. Inspect each piece of lumber or plywood
after drying and discard damaged or defective pieces.

## 2.03 [FIRE-RETARDANT-TREATED MATERIALS]{.underline}

A. [General]{.underline}: Where fire-retardant-treated wood is
indicated, comply with applicable requirements of AWPA C20 (lumber) and
AWPA C27 (plywood). Identify fire-retardant-treated wood with
appropriate classification marking of Underwriter Laboratory (UL), U.S.
Testing, or Timber Products Inspection, Inc.

B. [Interior Type A]{.underline}: For interior locations, use chemical
formulation that produces treated lumber and plywood with the following
properties under conditions present after installation:

1\. Bending strength, stiffness, and fastener-holding capacities are not
reduced below values published by manufacturer of chemical formulation
under elevated temperature and humidity conditions simulating installed
conditions when tested.

2\. No form of degradation occurs due to acid hydrolysis or other causes
related to treatment.

3\. Contact with treated wood does not promote corrosion of metal
fasteners.

C. [Exterior Type]{.underline}: Use for exterior locations, and where
indicated.

D. [Inspect each piece]{.underline} of treated lumber of plywood after
drying, and discard damaged or defective pieces.

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## 2.04 [MISCELLANEOUS LUMBER]{.underline}

A. [General]{.underline}: Provide lumber for support or attachment of
other construction, including rooftop equipment curbs and support bases,
cant strips, bucks, nailers, blocking, furring, grounds, stripping, and
similar members.

B. [Fabricate miscellaneous lumber]{.underline} from dimension lumber of
sizes indicated, and into shapes shown on Contract documents.

C. [Moisture Content]{.underline}: 19 percent maximum for lumber items
not specified to receive wood preservative treatment.

D. [Grade and Species]{.underline}: For dimension lumber sizes, provide
No. 3 or Standard grade lumber per ALSC's NGRs of any species. For
board-size lumber, provide No. 3 Common or Standard grade per WWPA of
any species.

## 2.05 [WOOD-BASED STRUCTURAL-USE PANELS, GENERAL]{.underline}

A. [Structural-Use Panel Standards]{.underline}: Panel thickness, grade,
veneer qualities and group number or span rating, shall be as shown on
Drawings, and in accordance with recommendations of APA. Comply with PS
1 for plywood panels, and PS 2 for products not manufactured under PS 1
provisions.

1\. Panels which have any edge or surface permanently exposed to weather
shall be classed Exterior Grade.

2\. Panel thickness, grade, and group number or span rating shall be at
least equal to that shown on Drawings.

3\. Application shall be in accordance with recommendations of APA.

B. [Trademark]{.underline}: Factory-mark each structural-use panel with
APA trademark evidencing compliance with grade requirements.

## 2.06 [CONCEALED, PERFORMANCE-RATED STRUCTURAL-USE PANELS]{.underline}

A. [General]{.underline}: Where structural-use panels are indicated for
concealed types of applications, provide APA performance rated panels
complying with requirements indicated for grade designation, span
rating, exposure durability classification, and edge detail (where
applicable).

1\. Provide panel clips for edge support as recommended by panel
manufacturer, or where required by UBC.

2\. Provide panels of thickness meeting requirements specified, but not
less than thickness indicated.

B. [Wall Sheathing]{.underline}: APA-rated sheathing.

1\. [Exposure Durability Classification]{.underline}: Exposure 1. Where
sheathing is exposed on any side, it shall be Exposure Durability
Classification "Exterior."

2\. [Span Rating]{.underline}: As required to suit stud spacing
indicated.

2.07 [STRUCTURAL-USE PANELS FOR BACKING]{.underline}

[Plywood Backing Panels]{.underline}: For mounting electrical or
telephone equipment, provide fire-retardant-treated plywood panels with
grade C-D plugged Exposure 1, in thickness indicated on Contract
documents or, if not otherwise indicated, not less than 15/32 inch (11.9
mm) thick.

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## 2.08 [FASTENERS]{.underline}

A. [General]{.underline}: Provide fasteners of size and type indicated,
that comply with requirements specified.

Where rough carpentry work is exposed to weather, in ground contact, or
in areas of high relative humidity, provide fasteners with hot-dip,
zinc-coating per ASTM A153

B. [Nails, Wire, Brads, and Staples]{.underline}: FS FF-N-105B.

C. [Wood Screws]{.underline}: ASME B18.6.1.

D. [Lag Bolts]{.underline}: ASME B18.2.1.

E. [Bolts]{.underline}: Steel bolts complying with ASTM A307, Grade A
with ASTM A563 hex nuts and, where indicated, flat washers.

## 2.09 [METAL FRAMING ANCHORS]{.underline}

A. [General]{.underline}: Provide galvanized steel framing anchors of
structural capacity, type, and size indicated, with allowable design
loads as published by manufacturer, that meet or exceed those indicated.

B. [Galvanized Steel Sheet]{.underline}: Hot-dip, zinc-coated steel
sheet complying with ASTM A653, G60 coating designation; structural,
commercial, or lock-forming quality, as standard with manufacturer for
type of anchor indicated.

# PART 3 - EXECUTION

## 3.01 [INSTALLATION, GENERAL]{.underline}

A. [Discard units of material]{.underline} with defects that impair
quality of rough carpentry and that are too small to use with minimum
number of joints or optimum joint arrangement.

B. [Set rough carpentry]{.underline} to required levels and lines, with
members plumb, true to line, cut, and fitted.

C. [Fit rough carpentry]{.underline} to other construction; scribe and
cope as required for accurate fit. Correlate location of furring,
nailers, blocking, grounds, and similar supports to allow attachment of
other construction.

D. [Apply field treatment]{.underline} complying with AWPA M4 to cut
surfaces of preservative-treated lumber and plywood.

E. [Securely attach rough carpentry work]{.underline} to substrate by
anchoring and fastening as indicated, complying with UBC Table 23-I-Q
"Nailing Schedule".

## 3.02 [WOOD GROUNDS, NAILERS, BLOCKING, AND SLEEPERS]{.underline}

A. [Install wood grounds, nailers, blocking, and sleepers]{.underline}
where shown, and where required for screeding or attaching other work.
Form to shapes shown and cut as required for true line and level of
attached work. Coordinate locations with other work involved.

B. [Attach to substrates]{.underline} to support applied loading. Recess
bolts and nuts flush with surfaces, unless otherwise indicated. Build
into masonry during installation of masonry work. Where possible, anchor
to formwork before concrete placement.

C. [Install permanent grounds]{.underline} of dressed,
preservative-treated, key-beveled lumber not less than 1-1/2 inches
(38.1 mm) wide, and of thickness required to bring face of ground to
exact thickness of finish material. Remove temporary grounds when no
longer required.

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## 3.03 [INSTALLATION OF STRUCTURAL-USE PANELS]{.underline}

A. [General]{.underline}: Comply with applicable recommendations
contained in APA Form No. E30, for types of structural-use panels and
applications indicated.

B. [Fastening Methods]{.underline}: Fasten panels as indicated below:

1\. [Sheathing]{.underline}: Nail to framing. Space panels 1/8 inch
(3.18 mm) at edges and ends.

2\. [Plywood Backing Panels]{.underline}: Nail or screw to supports.

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END OF SECTION