Table A68. Principal Building Activity, Number of Buildings 

 and Floorspace, 1992

Building

Characteristics

 RSE Column Factor:

All Buildings

(thousand)

Total Floorspace

(million square feet)

RSE

Row

Factor 0.9 1.1

All Buildings ........................................................ 4,806 67,876 3.7

Principal Building Activity

 Education ............................................................ 301 8,470 7.5

 Food Sales ......................................................... 130 757 14.5

 Food Service ..................................................... 260 1,491 8.7

 Health Care

 Inpatient ............................................................. 19 1,287 18.7

 Outpatient .......................................................... 44 476 17.8

 Laboratory .......................................................... 19 510 23.7

 Lodging ............................................................... 131 2,175 12.7

 Mercantile and Service ....................................... 1,272 12,402 6.3

 Office .................................................................. 749 12,319 5.8

 Parking Garage .................................................. 24 1,652 25.0

 Public Assembly ................................................. 278 4,556 12.8

 Public Order and Safety ..................................... 60 820 20.7

 Religious Worship ............................................... 366 3,747 10.9

 Skilled Nursing .................................................... 23 715 22.2

 Warehouse and Storage

 Nonrefrigerated .................................................. 733 11,056 8.1

 Refrigerated ....................................................... 28 428 26.2

 Other ................................................................... 50 620 18.1

 Vacant ................................................................ 319 4,396 10.4

Notes: • To obtain a RSE percentage for any table cell, multiply the cell’s corresponding RSE column and RSE row factors. • See Glossary for explanation

of abbreviations and definitions of terms used in this report.

Source: Energy Information Administration, Office of Energy Marketsand End Use, Form EIA-871A, "Building Questionnaire," 1992 Commercial Buildings

Energy Consumption Survey.

Energy Information Administration/Commercial Buildings Characteristrics 1992 255
Table A69. Energy Sources Used for Particular End Uses, Number of Buildings, 

 1992

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Using

Energy

Energy End Use in Building

RSE

Row

Factor

Primary

Space

Heating

Secondary

Space

Heating

Water

Heating Cooling Cooking

ManufacturingElectricity

Generation

 0.9 1.7 1.5 1.1 0.3 0.7 1.9 1.1

All Buildings ................................... 4,620 4,178 682 3,502 3,502 734 121 153 5.4 

Energy Sources Used for End Use

(more than one may apply)

 Electricity ........................................ 4,616 1,107 406 1,696 3,404 356 95 Q 5.8 

 Natural Gas .................................... 2,665 2,276 130 1,647 106 431 22 44 8.8 

 Fuel Oil ........................................... 559 394 84 126 Q Q Q 73 13.6 

 District Heat .................................... 95 91 4 38 (*) 6 Q Q 20.6 

 District Chilled Water ...................... 28 -- -- -- 28 -- -- -- 5.5 

 Propane .......................................... 337 217 38 80 Q 70 9 9 21.5 

 Wood .............................................. 103 68 33 Q -- Q Q Q 12.8 

 Any Other ....................................... 67 Q Q Q Q Q Q 25 24.6 

(*) = Value rounds to zero in the units displayed.

-- = Data not applicable.

Q = Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.

Notes: • To obtain a RSE percentage for any table cell, multiply the cell’s corresponding RSE column and RSE row factors. • See Glossary for explanation of

abbreviations and definitions of terms used in this report.

Source: Energy Information Administration, Office of Energy Marketsand End Use, Form EIA-871A, "Building Questionnaire," 1992 Commercial Buildings Energy

Consumption Survey.

256 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A70. Energy Sources Used for Particular End Uses, Floorspace, 

 1992

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Using

Energy

Energy End Use in Building

RSE

Row

Factor

Primary

Space

Heating

Secondary

Space

Heating

Water

Heating Cooling Cooking

ManufacturingElectricity

Generation

 0.8 1.3 1.7 1.1 0.3 1.0 1.5 0.9

Total Floorspace ............................ 66,574 61,996 16,517 58,479 57,041 23,065 3,174 10,373 5.7 

Energy Sources Used for End Use

(more than one may apply)

 Electricity ........................................ 66,549 15,502 10,134 25,482 54,628 12,183 2,579 Q 7.6 

 Natural Gas .................................... 45,097 35,161 3,363 29,962 1,906 15,233 799 2,691 8.8 

 Fuel Oil ........................................... 13,218 4,415 2,919 2,470 Q Q Q 6,984 10.9 

 District Heat .................................... 5,339 5,014 449 3,308 210 809 Q Q 19.0 

 District Chilled Water ...................... 2,066 -- -- -- 2,066 -- -- -- 5.4 

 Propane .......................................... 3,393 1,101 466 659 Q 1,039 201 312 22.1 

 Wood .............................................. 518 257 248 Q -- Q Q Q 11.9 

 Any Other ....................................... 1,067 546 Q Q Q Q Q 358 33.4 

-- = Data not applicable.

Q = Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.

Notes: • To obtain a RSE percentage for any table cell, multiply the cell’s corresponding RSE column and RSE row factors. • See Glossary for explanation of

abbreviations and definitions of terms used in this report.

Source: Energy Information Administration, Office of Energy Marketsand End Use, Form EIA-871A, "Building Questionnaire," 1992 Commercial Buildings Energy

Consumption Survey.

Energy Information Administration/Commercial Buildings Characteristrics 1992 257
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.1 1.2 1.5 1.0 -- 1.3 -- 0.4 -- -- Factor

All Buildings ................................... 4,806 67,876 71,236 14.1 4.5 953 1,013 58 50 28.5 4.0

Building Floorspace (square feet)

 1,001 to 5,000 ................................ 2,681 7,327 9,701 2.7 2.5 755 850 56 48 28.5 3.3

 5,001 to 10,000 .............................. 975 7,199 7,644 7.4 7.2 942 1,267 57 49 30.5 2.8

 10,001 to 25,000 ............................ 647 10,375 10,357 16.0 15.0 1,002 1,525 60 50 27.5 3.6

 25,001 to 50,000 ............................ 280 10,069 8,674 35.9 35.0 1,161 1,714 67 55 28.5 4.6

 50,001 to 100,000 .......................... 116 8,062 7,830 69.8 68.0 1,030 1,379 73 60 24.5 5.0

 100,001 to 200,000 ........................ 71 9,678 8,282 137.0 130.0 1,169 1,767 77 61 28.5 6.4

 200,001 to 500,000 ........................ 26 7,889 7,545 302.8 270.0 1,046 2,071 94 80 22.5 6.6

 Over 500,000 ................................. 9 7,278 11,203 770.5 600.0 Q 4,133 105 84 18.5 20.4

Principal Building Activity

 Education ....................................... 301 8,470 6,872 28.2 9.0 1,232 960 49 45 28.5 5.2

 Food Sales ..................................... 130 757 842 5.8 2.6 899 1,000 108 105 23.5 10.7

 Food Service ................................. 260 1,491 2,244 5.7 3.3 665 613 91 95 31.5 7.2

 Health Care .................................... 63 1,763 3,385 27.9 4.3 521 500 69 50 26.5 10.0

 Lodging .......................................... 154 2,891 2,022 18.8 8.0 1,429 1,700 158 168 25.5 8.6

 Mercantile and Service ................... 1,272 12,402 15,979 9.7 4.0 776 1,077 62 54 28.5 9.0

 Office .............................................. 749 12,319 27,161 16.4 5.0 454 500 53 45 26.5 4.7

 Parking Garage .............................. 24 1,652 215 69.9 6.0 7,668 3,000 83 52 21.5 25.6

 Public Assembly ............................. 278 4,556 2,752 16.4 5.9 1,655 1,875 50 45 28.5 13.3

 Public Order and Safety ................. 60 820 801 13.7 5.0 1,023 1,050 123 168 23.5 17.6

 Religious Worship .......................... 366 3,747 2,298 10.2 4.3 1,630 2,033 22 10 36.5 12.0

 Warehouse and Storage ................ 761 11,484 4,451 15.1 5.0 2,580 1,925 50 48 22.5 7.5

 Other .............................................. 69 1,130 1,232 16.4 4.0 918 1,273 75 56 23.5 16.3

 Vacant ............................................ 319 4,396 981 13.8 4.2 4,481 2,000 20 (*) 42.5 14.5

Year Constructed

 1899 or Before ............................... 169 1,721 1,531 10.2 5.5 1,124 1,350 50 45 104.5 10.6

 1900 to 1919 .................................. 255 3,608 3,004 14.1 5.0 1,201 1,325 51 45 83.5 10.6

 1920 to 1945 .................................. 724 8,712 6,597 12.0 4.2 1,321 1,200 52 48 60.5 7.5

 1946 to 1959 .................................. 880 10,421 9,114 11.8 4.2 1,143 1,000 54 48 40.5 6.1

 1960 to 1969 .................................. 783 12,612 17,873 16.1 4.5 706 1,000 64 51 28.5 8.7

 1970 to 1979 .................................. 982 14,014 14,400 14.3 4.5 973 1,000 60 50 17.5 5.1

 1980 to 1989 .................................. 884 14,287 15,987 16.2 4.8 894 943 64 52 7.5 6.5

 1990 to 1992 .................................. 128 2,502 2,731 19.6 4.8 916 1,138 62 52 1.5 10.6

Census Region

 Northeast ........................................ 771 13,400 18,570 17.4 5.2 722 1,050 62 52 35.5 10.5

 Midwest .......................................... 1,202 17,280 14,872 14.4 4.5 1,162 1,225 54 49 32.5 5.5

 South .............................................. 1,963 24,577 23,220 12.5 4.0 1,058 1,013 56 48 24.5 5.4

 West ............................................... 870 12,619 14,574 14.5 5.0 866 800 65 52 25.5 6.6

Energy Sources (more than one

may apply)

 Electricity ........................................ 4,616 66,549 71,187 14.4 4.6 935 1,000 60 50 27.5 3.9

 Natural Gas .................................... 2,665 45,097 51,322 16.9 5.1 879 1,000 63 51 31.5 4.7

 Fuel Oil ........................................... 559 13,218 18,068 23.7 5.0 732 1,200 58 50 35.5 6.5

 District Heat .................................... 95 5,339 7,153 56.0 17.0 746 1,125 76 50 33.5 9.9

 District Chilled Water ...................... 28 2,066 2,709 72.6 26.5 763 1,125 77 55 27.5 15.2

 Propane .......................................... 337 3,393 2,884 10.1 3.5 1,177 1,183 58 51 24.5 10.1

 Any Other ....................................... 163 1,551 1,320 9.5 3.6 1,175 1,600 59 48 30.5 13.9

See footnotes at end of table.

28 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.1 1.2 1.5 1.0 -- 1.3 -- 0.4 -- -- Factor

Energy End Uses (more than one

may apply)

 Heated Buildings ............................ 4,178 61,996 69,607 14.8 4.8 891 1,000 61 50 28.5 4.0

 Air-Conditioned Buildings ............... 3,502 57,041 66,909 16.3 5.0 853 950 63 51 27.5 4.2

 Buildings with Water

 Heating .......................................... 3,502 58,479 67,233 16.7 5.2 870 960 65 52 28.5 4.2

 Buildings with Cooking ................... 734 23,065 30,935 31.4 6.3 746 889 79 76 29.5 7.8

 Buildings with

 Manufacturing ............................... 121 3,174 2,538 26.3 9.6 1,250 1,050 59 49 27.5 10.6

Climate Zone: 45-Year Average

 Fewer than 2,000 CDD

 and --

 More than 7,000 HDD .................. 399 5,623 4,818 14.1 5.0 1,167 1,184 63 52 30.5 10.3

 5,500-7,000 HDD ......................... 1,134 18,024 17,497 15.9 5.0 1,030 1,150 58 50 35.5 6.8

 4,000-5,499 HDD ......................... 1,077 16,162 20,520 15.0 4.0 788 1,167 56 50 28.5 13.4

 Fewer than 4,000 HDD ................ 1,101 15,251 16,627 13.8 4.5 917 891 59 49 24.5 8.5

 More than 2,000 CDD

 and --

 Fewer than 4,000 HDD ................ 1,095 12,816 11,774 11.7 4.2 1,089 1,000 58 48 25.5 8.5

Predominant Exterior Wall

Material

 Masonry ......................................... 3,115 48,585 45,457 15.6 5.0 1,069 1,000 61 50 32.5 3.5

 Siding or Shingles .......................... 764 3,873 4,305 5.1 2.9 900 1,000 54 48 32.5 5.8

 Metal Panels .................................. 745 7,392 4,788 9.9 4.0 1,544 1,383 51 48 15.5 7.5

 Concrete Panels ............................. 87 4,961 10,320 56.7 20.0 481 1,025 73 60 16.5 15.4

 Window Glass ................................ 46 2,028 4,302 43.6 9.0 471 600 61 56 22.5 14.3

 Other .............................................. 47 1,037 2,064 22.1 4.8 502 750 52 50 20.5 16.1

Predominant Roof Material

 Built-Up .......................................... 1,642 30,257 31,481 18.4 5.8 961 1,000 64 52 32.5 4.5

 Shingles (Not Wood) ...................... 1,381 10,570 9,630 7.7 3.5 1,098 1,000 54 46 30.5 5.4

 Metal Surfacing .............................. 1,037 9,019 6,541 8.7 4.0 1,379 1,250 51 49 16.5 5.9

 Synthetic or Rubber ....................... 386 11,702 18,127 30.3 8.1 646 1,010 65 56 32.5 9.7

 Slate or Tile .................................... 155 1,998 1,627 12.9 5.5 1,228 1,000 57 45 40.5 10.3

 Concrete ......................................... 37 2,544 1,676 68.4 12.5 1,518 1,130 77 60 20.5 21.2

 Other .............................................. 167 1,786 2,154 10.7 3.7 829 900 64 56 26.5 11.0

Floors

 One ................................................ 3,007 25,424 21,565 8.5 3.5 1,179 1,000 57 50 23.5 4.6

 Two ................................................ 1,154 18,025 19,949 15.6 6.0 904 1,080 56 48 33.5 7.7

 Three .............................................. 446 9,877 9,592 22.2 8.6 1,030 1,222 65 52 59.5 5.8

 Four to Nine ................................... 186 10,377 11,258 55.7 25.0 922 1,143 74 55 66.5 7.7

 Ten or More .................................... 13 4,173 8,872 319.7 186.0 470 600 81 61 23.5 12.1

Percent Window Glass

 25 or Less ...................................... 4,193 51,356 42,768 12.2 4.2 1,201 1,100 57 49 28.5 3.4

 26 to 50 .......................................... 490 11,815 19,249 24.1 7.0 614 800 67 54 28.5 8.5

 51 to 75 .......................................... 94 3,206 5,995 34.2 5.8 535 683 71 55 24.5 9.7

 76 to 100 ........................................ 29 1,499 3,225 52.6 16.0 465 833 68 50 21.5 14.7

Building Shape

 Square ............................................ 280 3,654 3,673 13.0 3.8 995 857 61 49 28.5 8.1

 Rectangle ....................................... 3,659 39,233 38,955 10.7 4.0 1,007 1,000 57 50 27.5 3.2

 Rectangle or Square

 with Courtyard ............................... 48 1,372 1,539 28.8 10.0 892 1,167 65 58 24.5 14.8

 Right Angle ..................................... 333 6,071 5,723 18.2 6.8 1,061 1,167 61 50 32.5 7.7

 Other .............................................. 485 17,547 21,346 36.2 10.0 822 1,225 63 50 30.5 10.0

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 29
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.1 1.2 1.5 1.0 -- 1.3 -- 0.4 -- -- Factor

Workers (main shift)

 Less than 5 ..................................... 2,718 17,944 4,736 6.6 3.0 3,789 1,700 54 50 30.5 5.8

 5 to 9 .............................................. 895 7,524 5,758 8.4 4.8 1,307 720 61 51 25.5 4.5

 10 to 19 .......................................... 561 8,077 7,148 14.4 8.0 1,130 641 63 50 25.5 5.6

 20 to 49 .......................................... 405 10,556 11,777 26.1 16.3 896 567 69 53 26.5 4.7

 50 to 99 .......................................... 130 7,763 8,375 59.7 38.5 927 650 67 50 23.5 7.0

 100 to 249 ...................................... 64 7,378 9,318 114.6 79.0 792 617 82 65 18.5 6.9

 250 or More .................................... 31 8,633 24,124 274.4 150.0 358 320 84 65 22.5 9.5

Weekly Operating Hours

 39 or Fewer .................................... 1,039 8,246 3,997 7.9 3.5 2,063 1,600 12 9 33.5 7.1

 40 to 48 .......................................... 1,278 14,998 17,500 11.7 4.9 857 857 44 45 28.5 3.1

 49 to 60 .......................................... 1,004 14,046 15,478 14.0 5.0 907 1,063 54 54 27.5 3.2

 61 to 84 .......................................... 645 12,062 12,667 18.7 5.0 952 979 72 70 23.5 4.1

 85 to 167 ........................................ 478 8,467 12,470 17.7 4.0 Q 1,000 105 102 27.5 7.5

 Open Continuously ......................... 362 10,057 9,124 27.8 5.0 1,102 1,200 168 168 23.5 0.1

Ownership and Occupancy

 Nongovernment Owned ................. 4,206 52,752 52,310 12.5 4.3 1,008 1,025 58 50 28.5 3.2

 Owner Occupied .......................... 3,192 38,403 39,329 12.0 4.2 976 1,050 60 50 27.5 3.2

 Nonowner Occupied ..................... 817 12,273 12,810 15.0 4.8 958 978 61 52 26.5 6.5

 Unoccupied .................................. 197 2,077 171 10.5 3.8 12,161 1,300 9 (*) 36.5 18.8

 Government Owned ....................... 599 15,124 18,926 25.2 6.7 799 1,000 61 45 28.5 9.4

Energy-Related Space

Functions(more than one may

apply)

 Commercial Food

 Preparation .................................... 735 22,166 30,938 30.2 6.3 716 880 79 76 29.5 7.5

 Computer Room ............................. 223 14,199 22,847 63.7 24.5 621 833 69 53 25.5 6.3

 Rooms with Special

 Ventilation ..................................... 236 8,042 9,190 34.0 8.4 875 1,000 73 56 23.5 6.4

 Activities with Large

 Amounts of Hot Water ................... 203 6,862 7,084 33.7 10.0 969 1,069 103 95 24.5 7.6

Space-Heating Energy Source

(more than one may apply)

 Electricity ........................................ 1,513 25,636 31,533 16.9 5.0 813 923 66 51 21.5 7.6

 Natural Gas .................................... 2,405 38,524 42,893 16.0 5.0 898 1,000 60 50 32.5 5.1

 Fuel Oil ........................................... 479 7,334 8,226 15.3 4.8 892 1,208 53 49 37.5 8.0

 District Heat .................................... 94 5,242 7,044 55.9 16.5 744 1,150 76 50 33.5 10.0

 Propane .......................................... 255 1,568 1,282 6.2 3.1 1,222 1,200 48 48 23.5 11.4

 Wood .............................................. 102 504 461 5.0 3.2 1,093 1,600 55 48 32.5 16.3

 Any Other ....................................... 39 661 368 16.9 3.6 1,796 2,000 51 48 20.5 25.6

Primary Space-Heating

Energy Source

 Electricity ........................................ 1,107 15,502 17,408 14.0 4.8 891 875 69 53 18.5 6.8

 Natural Gas .................................... 2,276 35,161 39,268 15.5 5.0 895 1,000 60 50 32.5 5.4

 Fuel Oil ........................................... 394 4,415 4,960 11.2 4.5 890 1,200 50 48 38.5 9.8

 District Heat .................................... 91 5,014 6,665 54.8 16.3 752 1,150 76 50 33.5 10.3

 Propane .......................................... 217 1,101 798 5.1 2.9 1,380 1,333 47 45 24.5 12.5

 Wood .............................................. 68 257 242 3.8 2.8 Q 1,425 46 48 32.5 17.2

 Any Other ....................................... Q 546 267 Q 3.6 2,048 2,000 50 48 30.5 28.0

See footnotes at end of table.

30 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.0 1.1 1.5 1.1 -- 1.3 -- 0.5 -- -- Factor

Cooling Energy Sources (more

than one may apply)

 Electricity ........................................ 3,404 54,628 63,748 16.0 5.0 857 950 63 50 27.5 4.2

 Natural Gas .................................... 106 1,906 2,430 17.9 6.0 784 800 65 56 27.5 10.5

 District Chilled Water ...................... 28 2,066 2,709 72.6 26.5 763 1,125 77 55 27.5 15.2

Water-Heating Energy Sources

(more than one may apply)

 Electricity ........................................ 1,696 25,482 27,489 15.0 5.0 927 950 61 50 23.5 5.1

 Natural Gas .................................... 1,647 29,962 34,853 18.2 5.6 860 963 67 54 32.5 6.0

 Fuel Oil ........................................... 126 2,470 3,032 19.7 6.4 815 1,125 60 54 45.5 12.8

 District Heat .................................... 38 3,308 4,934 87.1 35.0 670 1,100 91 60 30.5 11.5

 Propane .......................................... 80 659 555 8.2 3.5 1,187 1,000 77 63 29.5 15.9

Cooking Energy Sources (more

than one may apply)

 Electricity ........................................ 356 12,183 18,405 34.2 6.2 662 933 80 77 25.5 11.8

 Natural Gas .................................... 431 15,233 21,634 35.3 7.8 704 813 83 78 32.5 9.1

 Propane .......................................... 70 1,039 1,072 14.9 5.2 969 843 77 77 38.5 15.2

Percent of Floorspace Heated

 Not Heated ..................................... 653 6,211 1,691 9.5 3.3 3,673 1,667 42 43 27.5 11.8

 1 to 50 ............................................ 688 11,195 9,940 16.3 5.3 Q 1,850 56 49 32.5 9.5

 51 to 99 .......................................... 618 10,211 11,922 16.5 5.5 856 1,000 64 54 31.5 5.6

 100 ................................................. 2,846 40,260 47,682 14.1 4.5 844 877 61 50 27.5 3.4

Percent of Floorspace Cooled

 Not Cooled ..................................... 1,304 10,835 4,327 8.3 3.5 2,504 1,538 46 45 31.5 6.6

 1 to 50 ............................................ 1,176 21,715 13,207 18.5 6.4 1,644 1,383 60 52 32.5 4.2

 51 to 99 .......................................... 658 13,872 23,943 21.1 6.0 579 840 68 54 29.5 7.7

 100 ................................................. 1,668 21,454 29,759 12.9 4.0 721 733 63 50 23.5 5.0

Percent Lit when Open

 Not Lit ............................................. 413 3,280 155 7.9 3.1 21,154 1,750 17 (*) 31.5 13.6

 1 to 50 ............................................ 881 9,980 4,218 11.3 4.5 2,366 2,000 59 49 33.5 6.3

 51 to 99 .......................................... 813 14,224 14,934 17.5 5.5 952 950 60 50 30.5 5.9

 100 ................................................. 2,699 40,393 51,929 15.0 4.5 778 867 64 51 25.5 4.6

Percent Lit when Closed

 Not Lit ............................................. 2,987 34,486 27,719 11.5 4.0 1,244 1,200 57 46 27.5 4.2

 1 to 50 ............................................ 1,689 31,482 41,483 18.6 6.0 759 911 61 54 28.5 4.8

 51 to 99 .......................................... 43 1,021 1,200 24.0 5.2 851 675 58 57 40.5 17.0

 100 ................................................. 87 887 835 10.2 3.6 1,063 833 47 55 25.5 17.0

Heating Equipment (more than

one may apply)

 Heat Pumps ................................... 449 8,269 9,484 18.4 6.0 872 900 65 50 15.5 7.0

 Furnaces ........................................ 1,692 16,909 19,794 10.0 4.0 854 1,000 57 49 32.5 7.6

 Individual Space Heaters ............... 1,464 22,380 24,549 15.3 4.8 912 1,225 61 50 28.5 7.5

 District Heat .................................... 93 5,225 7,043 55.9 16.5 742 1,150 76 50 33.5 10.0

 Boilers ............................................ 624 20,664 22,422 33.1 10.0 922 1,160 66 54 37.5 5.4

 Packaged Heating Units ................. 870 16,000 22,847 18.4 6.0 700 800 66 54 21.5 8.5

 Other .............................................. 42 903 1,143 21.2 3.4 790 943 83 64 22.5 17.6

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 31
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.0 1.1 1.5 1.1 -- 1.3 -- 0.5 -- -- Factor

Heating Distribution Equipment

(more than one may apply)

 Radiators or Baseboards ............... 473 13,263 13,548 28.0 9.6 979 1,300 65 52 45.5 5.7

 Ducts for Heating ......................... 2,955 45,422 55,081 15.4 5.0 825 900 61 50 25.5 4.4

 Heating Only .............................. 577 5,950 Q 10.3 3.7 Q 1,325 52 48 36.5 9.1

 Heating and Cooling ................... 2,378 39,472 46,568 16.6 5.4 848 833 63 50 23.5 3.4

 Variable Air-Volume

 System Used ............................. 210 11,528 19,351 54.8 13.5 596 707 70 55 18.5 11.9

 Fan Coil Units for

 Heating .......................................... 99 5,474 6,129 55.5 20.0 893 1,267 73 54 35.5 9.0

 Heating Only .............................. 78 3,569 3,417 45.7 15.5 1,044 1,400 68 53 38.5 11.6

 Heating and Cooling ................... 21 1,906 2,712 92.5 48.0 703 1,056 89 65 28.5 12.9

 Individual Space Heaters ............... 1,464 22,380 24,549 15.3 4.8 912 1,225 61 50 28.5 7.5

 Other .............................................. 181 3,310 3,213 18.3 4.8 1,030 1,060 67 52 36.5 10.1

Cooling Equipment (more than

one may apply)

 Residential-Type Central

 Air Conditioners ............................. 816 9,021 9,734 11.0 4.2 927 900 57 49 29.5 5.7

 Heat Pumps ................................... 454 8,406 9,559 18.5 6.0 879 875 65 50 15.5 6.9

 Individual Air

 Conditioners .................................. 1,023 17,979 17,997 17.6 5.0 999 1,250 64 52 36.5 9.7

 District Chilled Water ...................... 28 2,066 2,709 72.6 26.5 763 1,125 77 55 27.5 15.2

 Central Chillers ............................... 142 12,991 18,483 91.5 39.0 703 863 73 55 27.5 7.6

 Packaged Air-Conditioning

 Units .............................................. 1,459 27,830 32,786 19.1 6.3 849 800 65 54 24.5 4.0

 Swamp Coolers .............................. 179 2,085 3,033 11.7 4.2 687 975 65 51 30.5 14.8

 Other .............................................. 8 268 254 35.0 29.0 1,054 1,940 57 60 39.5 30.2

Cooling Distribution Equipment

(more than one may apply)

 Ducts for Cooling ............................ 2,733 47,755 55,881 17.5 5.6 855 850 63 50 24.5 3.3

 Cooling Only ................................. 355 8,283 9,312 23.3 6.6 889 1,000 63 50 32.5 7.0

 Heating and Cooling ..................... 2,378 39,472 46,568 16.6 5.4 848 833 63 50 23.5 3.4

 Variable Air-Volume

 System Used ............................... 221 12,430 17,840 56.2 15.0 697 670 71 58 18.5 7.5

 Fan Coil Units

 for Cooling ..................................... 56 3,875 4,926 69.5 21.5 787 925 74 57 31.5 11.4

 Cooling Only ................................. 35 1,969 2,214 56.0 10.5 889 875 66 48 34.5 17.3

 Heating and Cooling ..................... 21 1,906 2,712 92.5 48.0 703 1,056 89 65 28.5 12.9

 Individual Air

 Conditioners .................................. 1,023 17,979 17,997 17.6 5.0 999 1,250 64 52 36.5 9.7

 Other .............................................. 111 2,919 3,591 26.2 5.9 813 1,050 71 55 27.5 12.8

Lighting Equipment Types (more

than one may apply)

 Incandescent .................................. 2,509 39,221 46,381 15.6 4.8 846 1,071 63 50 32.5 4.9

 Standard Fluorescent ..................... 4,065 62,074 69,543 15.3 5.0 893 1,000 62 50 27.5 3.8

 Compact Fluorescent ..................... 206 8,336 16,556 40.4 8.5 503 1,000 78 60 24.5 12.5

 High-Intensity Discharge ................ 354 17,570 20,068 49.7 14.0 875 1,325 68 53 19.5 8.7

 Other .............................................. 78 1,612 1,949 20.6 6.0 827 750 61 50 16.5 15.0

See footnotes at end of table.

32 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.0 1.1 1.5 1.1 -- 1.3 -- 0.5 -- -- Factor

Water-Heating Equipment (more

than one may apply)

 Centralized System ........................ 1,994 31,599 35,671 15.8 5.0 886 990 65 52 29.5 4.8

 Self-Heating Tank ........................ 1,799 24,464 25,936 13.6 4.8 943 970 63 51 28.5 5.4

 Heated by Space-Heating

 Equipment ................................... 103 3,722 4,871 36.2 7.5 764 963 67 52 35.5 12.4

 Other ............................................ 106 4,032 5,658 38.2 8.2 713 1,150 85 69 32.5 11.3

 Distributed System ......................... 1,557 29,502 34,002 18.9 5.9 868 933 65 52 27.5 7.1

 Residential-Type Storage

 Tank ............................................ 1,489 25,809 26,162 17.3 5.8 986 933 64 52 27.5 4.9

 Point-of-Use Heaters .................... 56 3,367 Q 59.7 9.0 Q 1,043 76 55 15.5 22.0

 Other ............................................ 24 1,259 1,793 52.8 23.0 702 1,100 100 79 25.5 15.0

Personal Computers and/or

Computer Terminals

 1 to 4 .............................................. 1,269 13,355 10,478 10.5 5.0 1,275 967 65 52 25.5 4.0

 5 to 9 .............................................. 336 5,970 6,120 17.7 7.5 975 610 60 49 20.5 5.5

 10 to 19 .......................................... 216 6,236 6,317 28.9 15.0 987 667 63 50 25.5 6.8

 20 to 49 .......................................... 164 7,439 8,008 45.4 23.8 929 713 60 49 26.5 7.0

 50 to 99 .......................................... 59 4,908 5,944 83.4 57.0 826 750 71 55 22.5 8.5

 100 to 249 ...................................... 34 4,220 7,588 125.3 80.0 556 530 72 59 23.5 9.8

 250 or More .................................... 19 5,569 16,609 293.7 186.0 335 368 83 66 14.5 14.5

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling

 Insulation ....................................... 3,343 50,311 58,933 15.0 4.8 854 1,000 61 50 24.5 4.3

 Wall Insulation ................................ 2,320 33,240 38,937 14.3 4.6 854 938 61 50 20.5 3.8

 Storm or Multiple

 Glazing .......................................... 1,680 29,684 34,365 17.7 5.5 864 1,000 62 50 24.5 4.5

 Tinted, Reflective or

 Shading Glass ............................... 1,068 25,396 36,671 23.8 6.8 693 840 63 50 22.5 6.9

 Exterior or Interior Shading

 or Awnings .................................... 1,853 34,071 43,073 18.4 5.4 791 800 63 50 27.5 4.0

 Windows that Open ........................ 2,119 28,937 30,613 13.7 4.6 945 1,100 56 48 33.5 6.4

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume

 System .......................................... 250 13,970 23,262 56.0 13.5 601 750 69 55 20.5 10.3

 Economizer Cycle .......................... 414 18,313 29,830 44.2 12.0 614 844 72 57 20.5 8.5

 HVAC Maintenance ........................ 2,503 49,173 59,978 19.6 6.0 820 933 65 52 25.5 4.6

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ........................ 574 15,241 23,021 26.6 8.0 662 950 65 51 25.5 9.5

 Natural Lighting Control

 Sensors ......................................... 74 3,072 3,439 41.5 7.3 893 1,429 93 84 25.5 10.9

 Occupancy Sensors ....................... 59 3,629 6,852 61.4 10.8 530 800 73 50 25.5 10.2

 Time Clock ..................................... 339 12,104 19,096 35.7 8.2 634 950 72 56 24.5 12.3

 Manual Dimmer

 Switches ........................................ 413 12,329 20,507 29.8 8.0 601 1,000 69 57 28.5 9.8

 Other .............................................. 78 2,596 3,599 33.2 12.0 721 1,000 69 54 23.5 11.5

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 33
Table A1. Summary Table of Square Feet, Hours of Operation

 and Age of Building, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

All

Buildings

(thousand)

Total

Floorspace

(million

square

feet)

Total

Workers

in All

Buildings

(thousand)

Mean

Square

Feet per

Building

(thousand)

Median

Square

Feet per

Building

(thousand)

Mean

Square

Feet

per

Worker

Median

Square

Feet

per

Worker

Mean

Hours

per

Week

Median

Hours

per

Week

Median

Age of

Buildings

(years)

RSE

Row

1.0 1.1 1.5 1.1 -- 1.3 -- 0.5 -- -- Factor

Off-Hour Equipment Reduction

(more than one may apply)

 Heating ........................................... 3,400 46,248 54,309 13.6 4.8 852 1,000 51 49 28.5 4.0

 Cooling ........................................... 2,872 42,768 51,968 14.9 5.0 823 929 53 49 28.5 4.2

 Hot Water ....................................... 578 9,966 11,822 17.2 5.6 843 1,000 51 48 30.5 5.3

 Lighting ........................................... 4,089 54,944 61,385 13.4 4.7 895 1,000 51 49 28.5 3.7

 Other .............................................. 547 7,996 9,843 14.6 4.8 812 833 58 50 23.5 7.9

Energy Management Practices

(more than one may apply)

 Energy Management

 and Control

 System .......................................... 236 14,320 20,784 60.7 18.5 689 848 68 52 21.5 7.1

 Demand-Side

 Management

 Participation .................................. 315 11,310 19,265 35.9 9.0 587 1,000 70 55 26.5 9.6

 Energy Audit ................................... 521 14,779 18,789 28.3 7.2 787 875 69 54 28.5 5.5

 Building Energy

 Manager ........................................ 49 2,311 3,547 46.8 8.1 651 983 69 50 28.5 15.8

(*) = Value rounds to zero in the units displayed.

-- = Data not applicable.

Q = Data withheld because the Relative Standard Error (RSE) was greater than 50 percent, or fewer than 20 buildings were sampled.

Notes: • To obtain a RSE percentage for any table cell, multiply the cell’s corresponding RSE column and RSE row factors. • See Glossary for explanation of

abbreviations and definitions of terms used in this report.

Source: Energy Information Administration, Office of Energy Markets and End Use, Form EIA-871A, "Building Questionnaire," 1992 Commercial Buildings Energy

Consumption Survey.

34 Energy Information Administration/Commercial Buildings Characteristrics 1992