Table A8. Building Size, Number of Buildings, 1992

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.7 0.8 0.8 1.0 1.1 1.3 1.4 2.2

All Buildings ..................................... 4,806 2,681 975 647 280 116 71 26 9 6.9

Principal Building Activity

 Education ......................................... 301 112 43 57 40 30 12 6 Q 16.0

 Food Sales ....................................... 130 103 QQQQQQQ 23.1

 Food Service ................................... 260 179 51 21 QQQQQ 18.7

 Health Care ...................................... 63 39 Q Q Q Q 3 2 (*) 18.9

 Lodging ............................................ 154 56 39 26 21 7 3 1Q 25.0

 Mercantile and Service .................... 1,272 807 265 127 40 18 10 2 2 13.9

 Office ............................................... 749 387 168 102 51 20 14 5 2 12.6

 Parking Garage ................................ 24 Q Q Q Q Q Q 2Q 34.1

 Public Assembly .............................. 278 137 62 53 16 6 Q 1 Q 19.7

 Public Order and Safety ................... 60 30 QQQQQQQ 38.1

 Religious Worship ............................ 366 202 81 58 18 QQQQ 19.5

 Warehouse and Storage .................. 761 402 149 129 43 17 15 4 1 16.1

 Other ................................................ 69 39 Q 6 QQQQQ 34.7

 Vacant .............................................. 319 177 64 42 23 7 4 1Q 20.8

Year Constructed

 1899 or Before ................................. 169 80 52 22 12 QQQQ 26.1

 1900 to 1919 .................................... 255 128 71 30 15 5 Q Q Q 22.7

 1920 to 1945 .................................... 724 415 151 97 36 14921 17.2

 1946 to 1959 .................................... 880 511 174 111 50 18 11 3 (*) 15.1

 1960 to 1969 .................................... 783 435 135 118 50 23 17 5 1 14.0

 1970 to 1979 .................................... 982 558 201 116 62 25 12 6 2 12.2

 1980 to 1989 .................................... 884 487 167 134 46 25 16 5 Q 12.4

 1990 to 1992 .................................... 128 68 24 19 9 4 2 2 (*) 21.2

Census Region

 Northeast ......................................... 771 383 180 109 54 25 12 5 2 13.3

 Midwest ............................................ 1,202 676 241 163 66 29 15 10 2 12.1

 South ............................................... 1,963 1,171 370 239 106 41 26 6 4 11.8

 West ................................................. 870 451 184 136 56 20 18 5 1 15.3

Energy Sources (more than one

may apply)

 Electricity ......................................... 4,616 2,539 954 628 275 114 70 25 9 6.9

 Natural Gas ...................................... 2,665 1,331 574 420 181 83 52 18 6 7.7

 Fuel Oil ............................................ 559 288 125 62 39 21 11 10 4 13.0

 District Heat ..................................... 95 18 11 28 16 10651 23.0

 District Chilled Water ....................... 28 Q Q 8 9 Q 2 2 1 28.1

 Propane ........................................... 337 218 62 32 15 6 3 Q Q 23.1

 Any Other ......................................... 163 99 41 QQQQQQ 23.3

Energy End Uses (more than one

may apply)

 Heated Buildings .............................. 4,178 2,247 883 585 255 110 64 24 9 6.9

 Air-Conditioned Buildings ................ 3,502 1,792 758 519 236 103 59 24 9 7.0

 Buildings with Water Heating ........... 3,502 1,733 787 539 240 108 62 25 9 7.2

 Buildings with Cooking ..................... 734 320 137 114 70 44 29 15 6 11.2

 Buildings with Manufacturing ........... 121 32 32 32 119311 24.6

Predominant Exterior Wall Material

 Masonry ........................................... 3,115 1,573 675 488 211 94 48 19 7 7.6

 Siding or Shingles ............................ 764 595 105 48 13 QQQQ 16.8

 Metal Panels .................................... 745 457 155 85 316811 19.5

 Concrete Panels .............................. 87 Q 14 20 16 11841 21.5

 Window Glass .................................. 46 Q Q Q 8 Q 2 1 1 24.8

 Other ................................................ 47 QQQQQQQQ 40.1

See footnotes at end of table.

62 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A8. Building Size, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.7 0.8 0.8 1.0 1.1 1.3 1.4 2.2

Predominant Roof Material

 Built-Up ............................................ 1,642 772 369 265 124 55 41 12 5 9.7

 Shingles (Not Wood) ........................ 1,381 927 250 137 49 11 5 1 Q 14.4

 Metal Surfacing ................................ 1,037 648 209 122 39 11 8 Q Q 15.6

 Synthetic or Rubber ......................... 386 140 79 75 39 30 11 10 2 13.6

 Slate or Tile ...................................... 155 75 38 25 12 4 Q Q Q 25.8

 Concrete .......................................... 37 QQQQQ 3 2 1 27.4

 Other ................................................ 167 108 29 15 11 QQQQ 28.8

Floors

 One .................................................. 3,007 2,009 525 310 103 36 18 5 Q 10.7

 Two .................................................. 1,154 518 282 211 81 35 20 4 2 10.5

 Three ............................................... 446 133 121 100 54 22 11 4 1 13.8

 Four to Nine ..................................... 186 Q 47 26 42 21 18 10 1 17.3

 Ten or More ..................................... 13 QQQQQ 4 4 3 17.5

Percent Window Glass

 25 or Less ........................................ 4,193 2,433 848 554 202 80 52 18 6 8.0

 26 to 50 ............................................ 490 201 108 75 61 24 13 5 2 13.0

 51 to 75 ............................................ 94 40 Q 12 12 9 4 2 (*) 19.4

 76 to 100 .......................................... 29 QQQQQ 2 1 1 28.7

Building Shape

 Square ............................................. 280 167 64 27 126321 21.6

 Rectangle ......................................... 3,659 2,223 713 452 165 54 37 11 3 8.1

 Rectangle or Square with

 Courtyard ......................................... 48 Q Q Q Q 6Q Q Q 38.5

 Right Angle ...................................... 333 127 90 54 41 12 7 1 Q 17.1

 Other ................................................ 485 152 93 105 58 38 22 11 5 13.8

Workers (main shift)

 Less than 5 ...................................... 2,718 1,968 460 204 60 12 8 3 Q 13.2

 5 to 9 ................................................ 895 514 218 115 37 8 3 Q Q 14.2

 10 to 19 ............................................ 561 160 195 144 43 10 7 Q Q 15.7

 20 to 49 ............................................ 405 34 94 153 84 28 10 2 Q 14.4

 50 to 99 ............................................ 130 Q Q 25 41 32 16 3 Q 14.5

 100 to 249 ........................................ 64 Q Q Q 13 18 18 7 1 15.0

 250 or More ..................................... 31 QQQQ 7994 12.4

Weekly Operating Hours

 39 or Fewer ...................................... 1,039 688 188 107 37 14 Q 2 Q 15.9

 40 to 48 ............................................ 1,278 687 293 183 70 25 16 4 (*) 11.2

 49 to 60 ............................................ 1,004 519 216 156 71 20 17 4 1 12.1

 61 to 84 ............................................ 645 324 146 87 41 24 16 4 2 12.4

 85 to 167 .......................................... 478 281 69 64 31 17 10 5 1 15.4

 Open Continuously .......................... 362 182 62 50 31 15 9 8 Q 15.3

Ownership and Occupancy

 Nongovernment Owned ................... 4,206 2,423 861 540 228 82 50 16 7 7.6

 Owner Occupied ............................ 3,192 1,859 660 396 169 57 38 11 4 8.2

 Nonowner Occupied ...................... 817 437 167 126 47 22 11 5 Q 12.6

 Unoccupied .................................... 197 127 34 18 12 QQQQ 25.9

 Government Owned ......................... 599 258 114 108 53 34 21 10 2 12.3

Energy-Related Space Functions

(more than one may apply)

 Commercial Food Preparation ......... 735 323 136 114 70 44 29 15 5 10.2

 Computer Room .............................. 223 37 31 46 41 31 24 10 4 14.5

 Rooms with Special Ventilation ....... 236 80 52 44 25 17 11 6 2 15.7

 Activity with Large Amounts

 of Hot Water ..................................... 203 74 29 47 26 12961 17.9

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 63
Table A8. Building Size, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.7 0.8 0.8 1.0 1.1 1.3 1.4 2.2

Percent of Floorspace Heated

 Not Heated ....................................... 653 448 99 64 27 6 7 2Q 20.3

 1 to 50 .............................................. 688 340 156 116 46 13 10 4 2 14.2

 51 to 99 ............................................ 618 294 152 96 40 19 11 4 1 13.2

 100 ................................................... 2,846 1,600 568 371 167 77 43 16 5 8.5

Percent of Floorspace Cooled

 Not Cooled ....................................... 1,304 889 216 128 44 12 12 2 Q 15.0

 1 to 50 .............................................. 1,176 507 279 215 103 38 21 9 4 10.1

 51 to 99 ............................................ 658 299 152 108 46 27 16 8 2 12.4

 100 ................................................... 1,668 987 327 196 87 39 22 7 Q 10.5

Percent Lit when Open

 Not Lit .............................................. 413 287 64 36 18 5 Q Q Q 21.7

 1 to 50 .............................................. 881 489 180 144 41 14 11 2 Q 14.4

 51 to 99 ............................................ 813 387 189 128 63 24 13 5 Q 11.1

 100 ................................................... 2,699 1,518 541 339 158 73 46 19 4 7.9

Heating Equipment (more than one

may apply)

 Heat Pumps ..................................... 449 198 121 71 30 13 10 4 2 15.8

 Furnaces .......................................... 1,692 1,002 387 193 72 20 14 4 1 11.8

 Individual Space Heaters ................. 1,464 812 287 210 84 38 21 9 4 10.0

 District Heat ..................................... 93 18 11 28 159651 23.3

 Boilers .............................................. 624 165 145 135 91 43 28 12 4 11.7

 Packaged Heating Units .................. 870 396 190 162 62 36 16 6 3 12.2

 Other ................................................ 42 28 QQQQQQQ 42.4

Cooling Equipment (more than one

may apply)

 Residential-Type Central

 Air Conditioners ............................... 816 470 173 107 44 12731 15.1

 Heat Pumps ..................................... 454 202 120 71 31 15 11 3 2 15.6

 Individual Air Conditioners ............... 1,023 536 198 155 73 34 16 7 5 11.7

 District Chilled Water ....................... 28 Q Q 8 9 Q 2 2 1 28.1

 Central Chillers ................................ 142 Q 20 21 29 24 20 9 5 16.9

 Packaged Air-Conditioning

 Units ................................................. 1,459 625 347 264 119 58 30 12 4 9.8

 Swamp Coolers ............................... 179 110 33 21 8 QQQQ 37.5

 Other ................................................ 8 QQQQQQQQ 89.2

Lighting Equipment Types (more

than one may apply)

 Incandescent ................................... 2,509 1,342 523 347 167 66 43 17 5 7.9

 Standard Fluorescent ...................... 4,065 2,145 866 591 257 110 64 25 9 6.8

 Compact Fluorescent ....................... 206 68 50 31 24 16 10 6 2 15.1

 High-Intensity Discharge .................. 354 95 61 66 56 35 22 14 5 12.1

 Other ................................................ 78 37 Q 16 QQQQQ 30.7

Personal Computers and/or

Computer Terminals

 1 to 4 ................................................ 1,269 651 311 204 77 15 9 3 Q 11.8

 5 to 9 ................................................ 336 106 111 67 26 16 8 2 Q 16.7

 10 to 19 ............................................ 216 24 56 70 44 13 7 2 Q 18.4

 20 to 49 ............................................ 164 Q 14 63 35 27 9 4 Q 17.7

 50 to 99 ............................................ 59 Q Q 8 16 16 11 4 Q 18.3

 100 to 249 ........................................ 34 Q Q Q 79941 17.5

 250 or More ..................................... 19 QQQQ 4463 18.3

See footnotes at end of table.

64 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A8. Building Size, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.7 0.8 0.8 1.0 1.1 1.3 1.4 2.2

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ................. 3,343 1,777 708 475 212 93 52 19 7 7.6

 Wall Insulation ................................. 2,320 1,279 472 322 137 57 35 13 5 9.3

 Storm or Multiple Glazing ................ 1,680 800 390 263 123 56 29 13 5 10.0

 Tinted, Reflective or Shading

 Glass ................................................ 1,068 445 238 199 90 48 29 13 6 10.2

 Exterior or Interior Shading

 or Awnings ....................................... 1,853 901 392 288 137 75 37 17 5 9.5

 Windows that Open ......................... 2,119 1,181 425 296 120 54 30 11 3 9.4

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System ............ 250 67 45 45 35 24 17 11 5 14.8

 Economizer Cycle ............................ 414 111 84 94 47 35 26 12 6 13.0

 HVAC Maintenance ......................... 2,503 1,143 542 429 205 97 55 22 9 7.8

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ......................... 574 212 127 124 55 26 18 8 3 12.4

 Natural Lighting Control

 Sensors ............................................ 74 Q 21 1194231 25.2

 Occupancy Sensors ......................... 59 Q Q 1072731 21.4

 Time Clock ....................................... 339 114 80 66 35 20 13 7 5 15.9

 Manual Dimmer Switches ................ 413 147 101 88 36 18 13 8 3 12.7

 Other ................................................ 78 23 Q 21 8 6 5 1 (*) 24.2

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............. 4,357 2,376 887 610 268 113 68 25 9 7.0

 Building Shell ................................... 4,223 2,305 864 587 259 111 66 23 9 7.1

 HVAC ............................................... 2,604 1,194 569 447 208 98 57 23 9 7.6

 Lighting ............................................ 1,178 452 275 241 106 47 36 14 7 9.7

 Other ................................................ 264 102 62 50 25 14821 17.5

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program .................... 36 Q Q Q Q Q Q 1 (*) 25.0

 HVAC Program ................................ 154 46 30 36 14 12952 18.1

 Lighting Program ............................. 228 75 47 46 25 16982 16.3

 Other DSM Programs ...................... 110 37 Q 20 11 10852 19.2

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

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 65
Table A9. Building Size, Floorspace, 1992

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Building Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.8 0.8 0.8 1.0 1.0 1.3 1.4 2.0

All Buildings ..................................... 67,876 7,327 7,199 10,375 10,069 8,062 9,678 7,889 7,278 6.8

Principal Building Activity

 Education ......................................... 8,470 292 307 997 1,551 2,045 1,641 1,621 Q 15.6

 Food Sales ....................................... 757 286 QQQQQQQ 24.1

 Food Service ................................... 1,491 485 343 325 QQQQQ 19.5

 Health Care ...................................... 1,763 108 Q Q Q Q 401 504 381 18.6

 Lodging ............................................ 2,891 159 294 412 711 420 378 380 Q 25.1

 Mercantile and Service .................... 12,402 2,203 1,987 2,003 1,369 1,268 1,364 646 1,560 15.0

 Office ............................................... 12,319 1,018 1,248 1,656 1,823 1,355 1,973 1,708 1,537 12.6

 Parking Garage ................................ 1,652 Q Q Q Q Q Q 694 Q 35.4

 Public Assembly .............................. 4,556 438 494 822 615 378 Q 418 Q 24.2

 Public Order and Safety ................... 820 91 QQQQQQQ 38.3

 Religious Worship ............................ 3,747 564 562 920 663 QQQQ 19.6

 Warehouse and Storage .................. 11,484 1,089 1,106 2,066 1,631 1,250 2,124 1,075 1,144 16.5

 Other ................................................ 1,130 99 Q 110 QQQQQ 32.4

 Vacant .............................................. 4,396 473 459 635 768 503 464 357 Q 21.9

Year Constructed

 1899 or Before ................................. 1,721 251 397 297 431 QQQQ 28.4

 1900 to 1919 .................................... 3,608 336 523 503 522 319 Q Q Q 25.1

 1920 to 1945 .................................... 8,712 1,150 1,106 1,507 1,267 927 1,227 707 Q 17.2

 1946 to 1959 .................................... 10,421 1,352 1,255 1,775 1,792 1,236 1,520 1,011 Q 14.7

 1960 to 1969 .................................... 12,612 1,167 986 1,892 1,856 1,625 2,306 1,444 1,335 14.8

 1970 to 1979 .................................... 14,014 1,536 1,505 1,902 2,216 1,776 1,673 1,988 1,418 12.2

 1980 to 1989 .................................... 14,287 1,339 1,251 2,189 1,658 1,717 2,070 1,526 2,536 13.8

 1990 to 1992 .................................... 2,502 197 176 309 327 268 269 670 285 20.7

Census Region

 Northeast ......................................... 13,400 1,074 1,337 1,663 1,976 1,752 1,598 1,696 2,303 13.4

 Midwest ............................................ 17,280 1,889 1,763 2,689 2,353 2,097 2,048 2,839 1,601 11.9

 South ............................................... 24,577 3,155 2,723 3,782 3,696 2,842 3,720 1,968 2,691 12.0

 West ................................................. 12,619 1,208 1,376 2,241 2,043 1,371 2,311 1,386 683 14.2

Energy Sources (more than one

may apply)

 Electricity ......................................... 66,549 6,996 7,057 10,097 9,856 7,936 9,658 7,678 7,271 6.8

 Natural Gas ...................................... 45,097 3,761 4,266 6,865 6,510 5,735 7,134 5,648 5,177 7.6

 Fuel Oil ............................................ 13,218 829 925 978 1,377 1,539 1,573 3,017 2,980 12.5

 District Heat ..................................... 5,339 56 73 450 545 653 780 1,532 1,250 22.1

 District Chilled Water ....................... 2,066 Q Q 115 311 Q 252 737 515 26.0

 Propane ........................................... 3,393 573 466 456 501 411 500 Q Q 22.6

 Any Other ......................................... 1,551 250 311 QQQQQQ 27.0

Energy End Uses (more than one

may apply)

 Heated Buildings .............................. 61,996 6,210 6,533 9,424 9,132 7,622 8,730 7,470 6,876 6.8

 Air-Conditioned Buildings ................ 57,041 4,994 5,601 8,364 8,435 7,185 8,072 7,217 7,174 7.0

 Buildings with Water Heating ........... 58,479 4,928 5,834 8,724 8,637 7,489 8,492 7,466 6,910 7.1

 Buildings with Cooking ..................... 23,065 903 998 1,852 2,627 3,110 4,062 4,639 4,874 11.1

 Buildings with Manufacturing ........... 3,174 97 245 495 382 618 442 257 637 24.7

Predominant Exterior Wall Material

 Masonry ........................................... 48,585 4,401 5,001 7,867 7,545 6,552 6,649 5,666 4,905 7.6

 Siding or Shingles ............................ 3,873 1,536 730 750 469 QQQQ 16.1

 Metal Panels .................................... 7,392 1,255 1,158 1,345 1,120 426 1,158 366 565 20.0

 Concrete Panels .............................. 4,961 Q 108 325 576 736 1,033 1,282 Q 21.9

 Window Glass .................................. 2,028 Q Q Q 283 Q 286 377 726 24.2

 Other ................................................ 1,037 QQQQQQQQ 41.3

See footnotes at end of table.

66 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A9. Building Size, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Building Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.8 0.8 0.8 1.0 1.0 1.3 1.4 2.0

Predominant Roof Material

 Built-Up ............................................ 30,257 2,170 2,752 4,357 4,407 3,873 5,456 3,446 3,796 9.9

 Shingles (Not Wood) ........................ 10,570 2,463 1,791 2,149 1,797 777 648 466 Q 15.1

 Metal Surfacing ................................ 9,019 1,776 1,569 1,899 1,391 781 1,082 Q Q 15.9

 Synthetic or Rubber ......................... 11,702 391 592 1,258 1,451 2,013 1,557 2,912 1,528 14.3

 Slate or Tile ...................................... 1,998 215 275 357 445 275 Q Q Q 26.7

 Concrete .......................................... 2,544 Q Q Q Q Q 499 486 1,001 26.5

 Other ................................................ 1,786 284 203 234 379 QQQQ 28.1

Floors

 One .................................................. 25,424 5,331 3,834 4,916 3,634 2,484 2,409 1,315 Q 10.9

 Two .................................................. 18,025 1,508 2,121 3,434 2,913 2,421 2,617 1,252 1,759 10.9

 Three ............................................... 9,877 412 898 1,630 1,960 1,562 1,567 1,125 723 13.7

 Four to Nine ..................................... 10,377 Q 345 391 1,538 1,491 2,486 2,916 1,134 17.1

 Ten or More ..................................... 4,173 Q Q Q Q Q 598 1,281 2,159 17.1

Percent Window Glass

 25 or Less ........................................ 51,356 6,618 6,253 8,865 7,211 5,572 7,073 5,307 4,456 8.0

 26 to 50 ............................................ 11,815 575 819 1,194 2,204 1,711 1,847 1,556 1,909 13.2

 51 to 75 ............................................ 3,206 106 Q 208 449 603 548 776 414 19.4

 76 to 100 .......................................... 1,499 Q Q Q Q Q 210 249 498 27.8

Building Shape

 Square ............................................. 3,654 429 487 393 416 443 425 554 507 21.1

 Rectangle ......................................... 39,233 6,069 5,247 7,204 5,853 3,831 4,977 3,235 2,818 8.3

 Rectangle or Square with

 Courtyard ......................................... 1,372 Q Q Q Q 382 Q Q Q 33.2

 Right Angle ...................................... 6,071 360 659 899 1,501 836 926 407 Q 17.8

 Other ................................................ 17,547 435 702 1,741 2,140 2,571 3,080 3,480 3,399 13.7

Workers (main shift)

 Less than 5 ...................................... 17,944 5,095 3,329 3,053 2,107 910 1,044 1,020 Q 14.3

 5 to 9 ................................................ 7,524 1,554 1,612 1,801 1,348 595 444 Q Q 14.6

 10 to 19 ............................................ 8,077 537 1,446 2,323 1,538 643 922 Q Q 16.5

 20 to 49 ............................................ 10,556 120 757 2,608 3,049 1,899 1,367 628 Q 14.7

 50 to 99 ............................................ 7,763 Q Q 450 1,445 2,151 2,122 850 Q 14.7

 100 to 249 ........................................ 7,378 Q Q Q 517 1,303 2,550 2,139 744 15.9

 250 or More ..................................... 8,633 Q Q Q Q 561 1,229 2,812 3,951 12.7

Weekly Operating Hours

 39 or Fewer ...................................... 8,246 1,797 1,341 1,592 1,309 1,007 Q 418 Q 16.1

 40 to 48 ............................................ 14,998 1,904 2,186 2,994 2,553 1,698 2,254 1,178 230 11.3

 49 to 60 ............................................ 14,046 1,430 1,610 2,549 2,536 1,440 2,278 1,188 1,016 12.1

 61 to 84 ............................................ 12,062 926 1,098 1,408 1,443 1,769 2,152 1,238 2,028 13.2

 85 to 167 .......................................... 8,467 772 492 1,022 1,151 1,132 1,390 1,480 1,027 16.3

 Open Continuously .......................... 10,057 498 472 810 1,077 1,015 1,371 2,387 2,427 16.9

Ownership and Occupancy

 Nongovernment Owned ................... 52,752 6,638 6,351 8,640 8,116 5,821 6,820 4,957 5,409 7.6

 Owner Occupied ............................ 38,403 5,119 4,861 6,343 6,054 4,026 5,178 3,484 3,337 8.1

 Nonowner Occupied ...................... 12,273 1,172 1,251 2,017 1,645 1,516 1,527 1,252 Q 13.4

 Unoccupied .................................... 2,077 347 239 279 418 QQQQ 27.3

 Government Owned ......................... 15,124 689 848 1,735 1,953 2,241 2,858 2,932 1,869 12.2

Energy-Related Space Functions

(more than one may apply)

 Commercial Food Preparation ......... 22,166 911 994 1,848 2,627 3,110 4,062 4,639 3,975 10.2

 Computer Room .............................. 14,199 118 231 756 1,534 2,127 3,217 3,096 3,119 14.2

 Rooms with Special Ventilation ....... 8,042 241 394 742 851 1,095 1,628 1,839 1,250 15.4

 Activity with Large Amounts

 of Hot Water ..................................... 6,862 194 223 796 1,002 815 1,245 1,706 880 18.3

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 67
Table A9. Building Size, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Building Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.8 0.8 0.8 1.0 1.0 1.3 1.4 2.0

Percent of Floorspace Heated

 Not Heated ....................................... 6,211 1,150 724 979 995 473 983 425 Q 21.4

 1 to 50 .............................................. 11,195 1,014 1,182 1,801 1,665 937 1,395 1,148 2,054 14.6

 51 to 99 ............................................ 10,211 844 1,115 1,546 1,415 1,289 1,590 1,168 1,245 13.4

 100 ................................................... 40,260 4,319 4,178 6,050 5,995 5,364 5,710 5,148 3,497 8.4

Percent of Floorspace Cooled

 Not Cooled ....................................... 10,835 2,332 1,598 2,012 1,635 878 1,606 672 Q 15.6

 1 to 50 .............................................. 21,715 1,531 2,091 3,398 3,696 2,703 2,932 2,705 2,660 10.5

 51 to 99 ............................................ 13,872 830 1,136 1,753 1,652 1,785 2,247 2,371 2,098 12.7

 100 ................................................... 21,454 2,633 2,374 3,213 3,087 2,697 2,893 2,141 2,416 11.6

Percent Lit when Open

 Not Lit .............................................. 3,280 724 458 529 613 341 Q Q Q 22.1

 1 to 50 .............................................. 9,980 1,405 1,318 2,235 1,500 1,017 1,501 557 Q 15.2

 51 to 99 ............................................ 14,224 1,076 1,405 2,092 2,300 1,605 1,816 1,363 2,568 12.7

 100 ................................................... 40,393 4,122 4,018 5,520 5,656 5,099 6,296 5,743 3,939 8.1

Heating Equipment (more than one

may apply)

 Heat Pumps ..................................... 8,269 542 899 1,159 1,119 932 1,433 1,012 1,172 15.9

 Furnaces .......................................... 16,909 2,780 2,816 3,131 2,559 1,352 1,860 1,075 1,337 11.9

 Individual Space Heaters ................. 22,380 2,291 2,153 3,305 2,942 2,681 2,793 2,934 3,281 10.1

 District Heat ..................................... 5,225 56 73 443 516 624 777 1,521 1,215 22.5

 Boilers .............................................. 20,664 511 1,100 2,210 3,351 3,037 3,879 3,477 3,098 11.7

 Packaged Heating Units .................. 16,000 1,116 1,415 2,667 2,168 2,509 2,126 1,603 2,396 12.3

 Other ................................................ 903 74 QQQQQQQ 36.5

Cooling Equipment (more than one

may apply)

 Residential-Type Central

 Air Conditioners ............................... 9,021 1,313 1,268 1,716 1,528 810 913 851 622 14.3

 Heat Pumps ..................................... 8,406 549 902 1,152 1,181 1,032 1,511 889 1,191 15.7

 Individual Air Conditioners ............... 17,979 1,516 1,470 2,370 2,604 2,390 2,167 2,082 3,381 12.0

 District Chilled Water ....................... 2,066 Q Q 115 311 Q 252 737 515 26.0

 Central Chillers ................................ 12,991 Q 157 357 1,088 1,651 2,752 3,072 3,869 16.6

 Packaged Air-Conditioning

 Units ................................................. 27,830 1,750 2,550 4,319 4,245 4,040 4,172 3,678 3,075 9.6

 Swamp Coolers ............................... 2,085 316 250 331 304 QQQQ 35.8

 Other ................................................ 268 QQQQQQQQ 69.2

Lighting Equipment Types (more

than one may apply)

 Incandescent ................................... 39,221 3,763 3,835 5,550 6,045 4,604 5,898 5,226 4,300 8.0

 Standard Fluorescent ...................... 62,074 5,927 6,422 9,562 9,191 7,594 8,740 7,528 7,110 6.9

 Compact Fluorescent ....................... 8,336 195 380 507 925 1,185 1,375 1,745 2,024 15.5

 High-Intensity Discharge .................. 17,570 289 487 1,123 2,089 2,447 3,118 3,932 4,085 12.6

 Other ................................................ 1,612 113 Q 227 Q Q Q Q 407 27.7

Personal Computers and/or

Computer Terminals

 1 to 4 ................................................ 13,355 1,845 2,378 3,235 2,681 1,115 1,251 802 Q 12.5

 5 to 9 ................................................ 5,970 333 819 1,135 969 1,081 1,043 507 Q 16.4

 10 to 19 ............................................ 6,236 81 406 1,167 1,620 890 863 432 Q 19.1

 20 to 49 ............................................ 7,439 Q 108 1,080 1,288 1,794 1,288 1,047 Q 17.4

 50 to 99 ............................................ 4,908 Q Q 153 608 1,160 1,546 1,133 Q 18.1

 100 to 249 ........................................ 4,220 Q Q Q 251 629 1,318 1,323 619 17.0

 250 or More ..................................... 5,569 Q Q Q Q 330 578 1,948 2,667 18.2

See footnotes at end of table.

68 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A9. Building Size, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Building Size

RSE

Row

Factor

1,001 to

5,000

Square

Feet

5,001 to

10,000

Square

Feet

10,001 to

25,000

Square

Feet

25,001 to

50,000

Square

Feet

50,001 to

100,000

Square

Feet

100,001 to

200,000

Square

Feet

200,001 to

500,000

Square

Feet

Over

500,000

Square

Feet

0.5 0.8 0.8 0.8 1.0 1.0 1.3 1.4 2.0

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ................. 50,311 4,951 5,270 7,668 7,504 6,454 7,160 5,653 5,650 7.4

 Wall Insulation ................................. 33,240 3,554 3,481 5,145 4,949 3,940 4,733 3,637 3,800 9.0

 Storm or Multiple Glazing ................ 29,684 2,274 2,895 4,324 4,448 3,913 4,126 3,928 3,776 9.8

 Tinted, Reflective or Shading

 Glass ................................................ 25,396 1,251 1,789 3,195 3,226 3,395 3,948 4,076 4,516 10.4

 Exterior or Interior Shading

 or Awnings ....................................... 34,071 2,518 2,900 4,722 4,900 5,145 5,131 5,168 3,588 9.2

 Windows that Open ......................... 28,937 3,293 3,117 4,700 4,366 3,754 4,209 3,179 2,319 9.6

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System ............ 13,970 185 335 794 1,287 1,714 2,251 3,359 4,044 15.5

 Economizer Cycle ............................ 18,313 311 622 1,576 1,703 2,465 3,461 3,606 4,570 12.9

 HVAC Maintenance ......................... 49,173 3,230 4,032 6,983 7,392 6,729 7,514 6,834 6,459 7.6

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ......................... 15,241 611 956 2,088 1,970 1,883 2,507 2,677 2,550 12.8

 Natural Lighting Control

 Sensors ............................................ 3,072 Q 147 189 305 259 314 910 882 24.0

 Occupancy Sensors ......................... 3,629 Q Q 201 264 174 840 1,045 955 20.4

 Time Clock ....................................... 12,104 310 618 1,132 1,274 1,446 1,765 2,038 3,522 16.2

 Manual Dimmer Switches ................ 12,329 446 761 1,420 1,341 1,326 1,859 2,559 2,616 13.0

 Other ................................................ 2,596 69 Q 388 301 446 604 383 306 23.2

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............. 64,403 6,575 6,566 9,788 9,597 7,874 9,271 7,479 7,254 7.0

 Building Shell ................................... 62,056 6,375 6,405 9,403 9,270 7,683 8,935 7,098 6,887 7.0

 HVAC ............................................... 50,281 3,370 4,221 7,257 7,503 6,797 7,699 6,946 6,488 7.5

 Lighting ............................................ 29,453 1,302 2,066 3,952 3,884 3,420 4,821 4,557 5,452 9.9

 Other ................................................ 5,952 291 467 821 896 917 1,020 740 799 17.2

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program .................... 1,079 Q Q Q Q Q Q 310 143 22.6

 HVAC Program ................................ 6,370 152 222 595 541 843 1,236 1,490 1,291 17.7

 Lighting Program ............................. 8,805 225 345 704 951 1,128 1,235 2,247 1,970 16.4

 Other DSM Programs ...................... 6,176 119 Q 326 418 712 1,190 1,548 1,749 19.5

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 69
Table A10. Year Constructed, Number of Buildings, 1992

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.6 1.4 0.9 0.8 0.8 0.8 0.9 1.4 1.7

All Buildings ..................................... 4,806 169 255 724 880 783 982 671 212 128 7.4

Building Floorspace (square feet)

 1,001 to 5,000 .................................. 2,681 80 128 415 511 435 558 384 103 68 9.9

 5,001 to 10,000 ................................ 975 52 71 151 174 135 201 119 49 24 12.6

 10,001 to 25,000 .............................. 647 22 30 97 111 118 116 98 36 19 13.5

 25,001 to 50,000 .............................. 280 12 15 36 50 50 62 33 13 9 16.5

 50,001 to 100,000 ............................ 116 Q 5 14 18 23 25 20 5 4 17.9

 100,001 to 200,000 .......................... 71 Q Q 9 11 17 12 12 3 2 23.0

 200,001 to 500,000 .......................... 26 Q Q 2 3 5 6 4 1 2 24.4

 Over 500,000 ................................... 9 Q Q 1 (*) 1 2 2 Q (*) 36.4

Principal Building Activity

 Education ......................................... 301 Q 12 28 76 72 46 37 12 17 19.9

 Food Sales ....................................... 130 Q Q Q Q Q 28 Q Q Q 28.9

 Food Service ................................... 260 Q Q 43 51 33 73 23 Q Q 21.8

 Health Care ...................................... 63 Q Q 7 10 15 14 9 Q Q 40.3

 Lodging ............................................ 154 Q Q 14 24 38 27 22 Q 4 26.4

 Mercantile and Service .................... 1,272 34 59 210 235 208 247 200 47 32 11.6

 Office ............................................... 749 31 38 108 136 102 163 113 42 15 13.7

 Parking Garage ................................ 24 Q Q Q Q Q 10 Q Q (*) 38.1

 Public Assembly .............................. 278 Q 15 42 42 58 52 32 Q 12 20.2

 Public Order and Safety ................... 60 Q Q Q Q Q 16 Q Q Q 37.0

 Religious Worship ............................ 366 29 33 56 89 53 55 37 Q Q 18.3

 Warehouse and Storage .................. 761 Q 27 112 117 107 185 125 50 21 15.4

 Other ................................................ 69 Q Q Q 13 11 15 14 Q Q 46.3

 Vacant .............................................. 319 Q 40 75 53 44 49 29 Q 7 19.9

Census Region

 Northeast ......................................... 771 52 62 166 124 122 118 81 31 14 15.3

 Midwest ............................................ 1,202 78 105 193 208 174 248 121 37 38 15.2

 South ............................................... 1,963 26 66 257 368 324 426 341 102 51 12.3

 West ................................................. 870 Q 22 109 179 163 190 128 42 25 18.4

Energy Sources (more than one

may apply)

 Electricity ......................................... 4,616 169 244 681 839 759 945 648 206 124 7.4

 Natural Gas ...................................... 2,665 112 178 437 515 465 517 279 108 53 9.0

 Fuel Oil ............................................ 559 31 52 105 107 89 91 52 22 8 18.3

 District Heat ..................................... 95 4 10 13 22 22 9 7 4 Q 27.2

 District Chilled Water ....................... 28 Q Q Q 7 5 5 Q Q Q 40.6

 Propane ........................................... 337 Q Q 42 60 53 67 57 16 20 22.5

 Any Other ......................................... 163 Q Q 49 Q 25 31 Q Q Q 26.2

Energy End Uses (more than one

may apply)

 Heated Buildings .............................. 4,178 158 232 623 760 687 850 576 184 107 7.5

 Air-Conditioned Buildings ................ 3,502 119 169 491 643 563 741 515 167 93 8.0

 Buildings with Water Heating ........... 3,502 126 202 507 638 580 721 489 160 79 7.8

 Buildings with Cooking ..................... 734 41 42 101 134 120 154 86 36 21 12.5

 Buildings with Manufacturing ........... 121 Q Q 21 20 11 31 15 Q Q 28.3

Predominant Exterior Wall Material

 Masonry ........................................... 3,115 126 189 528 667 548 550 338 109 61 8.7

 Siding or Shingles ............................ 764 43 60 137 121 106 141 102 31 26 14.7

 Metal Panels .................................... 745 Q Q 48 71 106 229 194 61 33 15.1

 Concrete Panels .............................. 87 Q Q Q Q 14 27 21 7 6 24.4

 Window Glass .................................. 46 Q Q Q Q 6 18 8 1 Q 39.8

 Other ................................................ 47 Q Q Q Q Q 17 Q Q Q 46.4

See footnotes at end of table.

70 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A10. Year Constructed, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.6 1.4 0.9 0.8 0.8 0.8 0.9 1.4 1.7

Predominant Roof Material

 Built-Up ............................................ 1,642 53 93 294 375 328 287 159 36 17 12.0

 Shingles (Not Wood) ........................ 1,381 56 93 222 269 206 285 179 37 33 11.4

 Metal Surfacing ................................ 1,037 Q Q 75 99 146 285 255 90 50 13.8

 Synthetic or Rubber ......................... 386 20 26 62 79 55 59 39 28 17 17.6

 Slate or Tile ...................................... 155 17 14 33 25 22 Q Q Q Q 22.5

 Concrete .......................................... 37 Q Q Q Q 6 7 9 Q 1 42.8

 Other ................................................ 167 Q Q 33 27 20 40 19 Q Q 31.2

Floors

 One .................................................. 3,007 Q 52 323 584 554 707 511 159 99 9.9

 Two .................................................. 1,154 47 89 227 214 177 217 122 39 20 11.5

 Three ............................................... 446 58 75 135 65 39 44 19 7 4 16.9

 Four to Nine ..................................... 186 46 38 37 15 11 13 16 6 5 19.8

 Ten or More ..................................... 13 Q Q 3 Q 3 2 3 Q (*) 27.4

Percent Window Glass

 25 or Less ........................................ 4,193 141 215 651 768 681 863 593 172 110 7.8

 26 to 50 ............................................ 490 25 36 62 88 82 96 55 33 14 15.4

 51 to 75 ............................................ 94 Q Q 11 16 18 18 16 Q 4 30.6

 76 to 100 .......................................... 29 Q Q Q 8 3 6 7 Q Q 46.9

Building Shape

 Square ............................................. 280 Q 12 42 58 41 59 45 14 3 21.0

 Rectangle ......................................... 3,659 123 203 558 643 579 772 520 163 97 8.3

 Rectangle or Square with

 Courtyard ......................................... 48 Q Q Q Q 8 11 7 Q Q 44.4

 Right Angle ...................................... 333 19 Q 46 67 70 61 38 8 8 18.7

 Other ................................................ 485 17 20 75 107 85 79 61 23 18 15.5

Workers (main shift)

 Less than 5 ...................................... 2,718 93 157 476 501 431 514 363 106 77 9.9

 5 to 9 ................................................ 895 41 39 122 176 131 208 120 42 16 12.8

 10 to 19 ............................................ 561 14 36 63 94 101 130 80 29 15 16.1

 20 to 49 ............................................ 405 14 13 46 80 78 80 63 22 10 16.0

 50 to 99 ............................................ 130 Q Q 10 20 23 28 24 8 5 20.4

 100 to 249 ........................................ 64 Q 3 4 7 11 16 15 5 3 20.6

 250 or More ..................................... 31 Q Q 3 2 8 6 6 2 2 23.4

Weekly Operating Hours

 39 or Fewer ...................................... 1,039 57 75 185 219 150 196 103 29 24 14.0

 40 to 48 ............................................ 1,278 43 71 208 245 188 244 194 55 30 11.8

 49 to 60 ............................................ 1,004 22 52 137 192 171 211 146 38 34 12.6

 61 to 84 ............................................ 645 17 23 100 82 106 154 109 36 18 14.7

 85 to 167 .......................................... 478 22 21 61 88 86 99 57 34 10 16.9

 Open Continuously .......................... 362 Q 13 34 53 82 77 63 21 12 18.4

Ownership and Occupancy

 Nongovernment Owned ................... 4,206 163 226 644 751 659 865 614 184 102 7.7

 Owner Occupied ............................ 3,192 135 175 478 561 495 657 460 145 85 8.5

 Nonowner Occupied ...................... 817 23 39 122 147 130 171 137 35 14 15.4

 Unoccupied .................................... 197 Q Q 45 43 34 36 Q Q Q 24.5

 Government Owned ......................... 599 Q 29 80 129 125 117 58 29 26 15.5

Energy-Related Space Functions

(more than one may apply)

 Commercial Food Preparation ......... 735 41 42 101 134 122 155 86 34 21 12.3

 Computer Room .............................. 223 Q 12 26 33 43 44 34 17 6 19.4

 Rooms with Special Ventilation ....... 236 Q Q 25 39 38 54 37 14 10 20.5

 Activity with Large Amounts

 of Hot Water ..................................... 203 Q Q 25 42 45 44 23 12 5 19.1

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 71
Table A10. Year Constructed, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.6 1.4 0.9 0.8 0.8 0.8 0.9 1.4 1.7

Percent of Floorspace Heated

 Not Heated ....................................... 653 Q 24 106 121 99 145 95 29 21 16.2

 1 to 50 .............................................. 688 35 45 135 115 115 114 91 27 11 15.3

 51 to 99 ............................................ 618 32 38 110 109 97 125 78 20 Q 16.7

 100 ................................................... 2,846 88 147 374 535 473 598 408 137 87 8.2

Percent of Floorspace Cooled

 Not Cooled ....................................... 1,304 50 86 234 237 220 241 157 45 35 12.4

 1 to 50 .............................................. 1,176 67 68 190 250 181 212 147 44 17 11.3

 51 to 99 ............................................ 658 24 44 106 111 103 142 90 22 16 15.2

 100 ................................................... 1,668 28 58 195 282 279 387 278 101 60 10.8

Percent Lit when Open

 Not Lit .............................................. 413 Q 23 76 78 55 83 58 Q Q 21.0

 1 to 50 .............................................. 881 61 79 168 151 138 150 95 19 20 13.9

 51 to 99 ............................................ 813 41 52 122 150 132 163 108 30 15 14.6

 100 ................................................... 2,699 55 101 359 501 458 586 411 148 82 8.7

Heating Equipment (more than one

may apply)

 Heat Pumps ..................................... 449 Q Q 34 44 58 112 120 35 23 19.1

 Furnaces .......................................... 1,692 74 104 285 358 282 324 191 53 21 11.1

 Individual Space Heaters ................. 1,464 61 65 230 258 259 305 197 52 36 11.0

 District Heat ..................................... 93 4 10 12 22 22 9 7 4 Q 27.3

 Boilers .............................................. 624 53 70 128 127 107 79 33 15 12 14.7

 Packaged Heating Units .................. 870 Q 20 84 137 136 219 165 63 33 14.4

 Other ................................................ 42 Q Q Q Q Q 13 Q Q Q 48.9

Heating Distribution Equipment

(more than one may apply)

 Radiators or Baseboards ................. 473 54 68 107 87 71 54 21 9 3 17.9

 Ducts for Heating ............................. 2,955 90 138 394 529 474 641 457 149 83 8.4

 Heating Only ............................... 577 33 45 120 135 101 84 46 Q Q 14.5

 Heating and Cooling ................... 2,378 57 93 274 395 372 558 411 139 78 9.5

 Variable Air-Volume

 System ........................................ 210 Q 9 16 29 29 43 38 32 12 19.7

 Fan Coil Units for Heating ................ 99 Q 8 22 20 16 12 8 Q Q 25.6

 Heating Only ............................... 78 Q Q 18 18 10 9 7 Q Q 32.0

 Heating and Cooling ................... 21 Q Q Q Q 7 3 Q Q Q 37.6

 Individual Space Heaters ................. 1,464 61 65 230 258 259 305 197 52 36 11.0

 Other ................................................ 181 Q Q 24 57 34 23 16 Q Q 25.9

Cooling Equipment (more than one

may apply)

 Residential-Type Central

 Air Conditioners ............................... 816 34 64 105 156 135 162 112 31 17 16.4

 Heat Pumps ..................................... 454 Q 13 29 43 62 116 119 38 25 20.3

 Individual Air Conditioners ............... 1,023 65 78 203 217 172 166 85 25 12 13.4

 District Chilled Water ....................... 28 Q Q Q 7 5 5 Q Q Q 40.6

 Central Chillers ................................ 142 Q 5 12 27 36 27 14 9 5 21.8

 Packaged Air-Conditioning

 Units ................................................. 1,459 41 41 186 256 241 348 229 77 40 11.7

 Swamp Coolers ............................... 179 Q Q 28 42 40 24 31 Q Q 37.4

 Other ................................................ 8 Q Q Q Q Q Q Q Q Q 102.8

Cooling Distribution Equipment

(more than one may apply)

 Ducts for Cooling ............................. 2,733 83 117 329 466 430 623 454 148 82 9.0

 Cooling Only ............................... 355 26 24 56 71 57 65 43 9 Q 18.8

 Heating and Cooling ................... 2,378 57 93 274 395 372 558 411 139 78 9.5

 Variable Air-Volume

 System ........................................ 221 Q 10 16 30 27 50 39 33 12 18.4

 Fan Coil Units for Cooling ................ 56 Q Q 8 9 16 9 3 Q (*) 34.8

 Cooling Only ............................... 35 Q Q Q Q 9 Q Q Q Q 46.5

 Heating and Cooling ................... 21 Q Q Q Q 7 3 Q Q Q 37.6

 Individual Air Conditioners ............... 1,023 65 78 203 217 172 166 85 25 12 13.4

 Other ................................................ 111 Q Q 12 18 31 19 Q Q Q 32.6

See footnotes at end of table.

72 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A10. Year Constructed, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.6 1.4 0.9 0.8 0.8 0.8 0.9 1.4 1.7

Lighting Equipment Types (more

than one may apply)

 Incandescent ................................... 2,509 136 165 436 494 399 461 284 74 59 9.2

 Standard Fluorescent ...................... 4,065 140 219 588 740 665 843 583 187 101 7.3

 Compact Fluorescent ....................... 206 Q 9 27 26 36 44 29 13 11 21.9

 High-Intensity Discharge .................. 354 Q 13 37 52 49 77 75 27 20 15.5

 Other ................................................ 78 Q Q Q Q Q 12 25 Q Q 35.9

Personal Computers and/or

Computer Terminals

 1 to 4 ................................................ 1,269 38 57 181 228 188 301 177 68 32 11.9

 5 to 9 ................................................ 336 Q 17 33 41 44 94 65 25 7 17.1

 10 to 19 ............................................ 216 Q Q 26 39 52 43 30 11 6 20.0

 20 to 49 ............................................ 164 Q 12 14 29 36 27 24 14 5 21.1

 50 to 99 ............................................ 59 Q Q 5 11 9 12 12 3 2 25.1

 100 to 249 ........................................ 34 Q Q 6 3 8 7 6 2 2 29.3

 250 or More ..................................... 19 Q Q 1 1 3 4 5 2 2 32.5

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ................. 3,343 100 167 419 549 551 739 541 174 103 7.9

 Wall Insulation ................................. 2,320 51 89 222 302 364 571 466 155 100 8.8

 Storm or Multiple Glazing ................ 1,680 88 125 218 238 230 332 257 117 75 9.8

 Tinted, Reflective or Shading

 Glass ................................................ 1,068 30 34 119 172 171 221 203 80 40 12.3

 Exterior or Interior Shading

 or Awnings ....................................... 1,853 67 94 240 336 297 364 285 110 61 9.9

 Windows that Open ......................... 2,119 106 146 360 454 352 346 240 56 60 10.3

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System ............ 250 Q 11 19 39 36 53 41 33 12 17.9

 Economizer Cycle ............................ 414 Q 22 38 51 61 99 63 47 24 16.3

 HVAC Maintenance ......................... 2,503 93 134 317 428 429 532 371 132 68 9.0

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ......................... 574 20 27 86 93 86 115 84 38 24 15.8

 Natural Lighting Control

 Sensors ............................................ 74 Q Q Q 16 10 15 10 6 Q 34.4

 Occupancy Sensors ......................... 59 Q Q 4 11 16 7 9 Q Q 34.8

 Time Clock ....................................... 339 24 11 48 39 58 67 64 17 12 19.1

 Manual Dimmer Switches ................ 413 38 31 63 58 56 76 55 18 18 15.9

 Other ................................................ 78 Q Q Q 7 16 24 8 Q 4 34.9

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............. 4,357 159 235 641 782 716 889 617 195 121 7.7

 Building Shell ................................... 4,223 155 230 615 761 697 850 604 193 117 7.8

 HVAC ............................................... 2,604 95 137 328 445 442 556 382 144 76 8.7

 Lighting ............................................ 1,178 65 65 173 169 180 235 175 68 48 11.0

 Other ................................................ 264 Q 20 31 41 38 59 34 21 9 21.6

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program .................... 36 Q Q Q Q 5 12 Q Q Q 44.1

 HVAC Program ................................ 154 Q 7 14 24 29 43 17 10 Q 26.0

 Lighting Program ............................. 228 9 14 36 42 39 53 22 9 4 23.2

 Other DSM Programs ...................... 110 Q Q 14 15 15 28 11 7 5 28.9

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

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 73
Table A11. Year Constructed, Floorspace, 1992

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.5 1.6 1.1 0.9 0.9 0.7 0.9 1.5 1.2

All Buildings ..................................... 67,876 1,721 3,608 8,712 10,421 12,612 14,014 10,149 4,138 2,502 9.3

Building Floorspace (square feet)

 1,001 to 5,000 .................................. 7,327 251 336 1,150 1,352 1,167 1,536 1,064 275 197 10.7

 5,001 to 10,000 ................................ 7,199 397 523 1,106 1,255 986 1,505 896 355 176 12.5

 10,001 to 25,000 .............................. 10,375 297 503 1,507 1,775 1,892 1,902 1,613 576 309 13.7

 25,001 to 50,000 .............................. 10,069 431 522 1,267 1,792 1,856 2,216 1,176 482 327 17.0

 50,001 to 100,000 ............................ 8,062 Q 319 927 1,236 1,625 1,776 1,330 387 268 17.1

 100,001 to 200,000 .......................... 9,678 Q Q 1,227 1,520 2,306 1,673 1,626 444 269 23.2

 200,001 to 500,000 .......................... 7,889 Q Q 707 1,011 1,444 1,988 1,207 320 670 24.7

 Over 500,000 ................................... 7,278 Q Q Q Q 1,335 1,418 1,237 Q 285 30.5

Principal Building Activity

 Education ......................................... 8,470 Q 441 1,077 1,903 2,405 1,728 480 173 253 19.4

 Food Sales ....................................... 757 Q Q Q Q Q 155 Q Q Q 35.9

 Food Service ................................... 1,491 Q Q 246 283 187 365 103 Q Q 27.7

 Health Care ...................................... 1,763 Q Q 227 152 492 544 240 Q Q 28.8

 Lodging ............................................ 2,891 Q Q 410 328 482 579 550 Q 97 26.8

 Mercantile and Service .................... 12,402 239 422 1,381 1,883 2,680 2,607 2,109 535 545 17.1

 Office ............................................... 12,319 435 716 1,389 1,400 2,187 2,283 2,419 899 590 15.3

 Parking Garage ................................ 1,652 Q Q Q Q Q 674 Q Q 124 41.1

 Public Assembly .............................. 4,556 Q 142 495 346 552 1,096 461 Q 197 25.6

 Public Order and Safety ................... 820 Q Q Q Q Q 168 Q Q Q 47.8

 Religious Worship ............................ 3,747 267 433 355 1,088 628 505 358 Q Q 23.9

 Warehouse and Storage .................. 11,484 Q 269 1,853 1,805 1,815 2,397 2,233 610 377 19.6

 Other ................................................ 1,130 Q Q Q 188 184 210 126 Q Q 36.2

 Vacant .............................................. 4,396 Q 877 929 577 431 702 571 Q 77 28.3

Census Region

 Northeast ......................................... 13,400 676 1,052 2,655 2,070 2,485 2,123 1,547 506 286 17.6

 Midwest ............................................ 17,280 720 1,246 2,296 2,629 2,652 4,086 2,482 500 670 15.2

 South ............................................... 24,577 167 788 2,646 3,898 4,914 4,940 3,950 2,367 906 16.6

 West ................................................. 12,619 Q 522 1,115 1,825 2,562 2,865 2,170 765 639 16.8

Energy Sources (more than one

may apply)

 Electricity ......................................... 66,549 1,721 3,402 8,396 10,135 12,479 13,781 10,047 4,106 2,483 9.4

 Natural Gas ...................................... 45,097 1,249 2,826 5,738 7,294 8,900 9,230 6,265 1,965 1,630 10.2

 Fuel Oil ............................................ 13,218 344 764 1,748 1,647 2,363 2,747 2,122 741 743 15.7

 District Heat ..................................... 5,339 91 269 1,135 566 1,419 976 532 149 202 22.5

 District Chilled Water ....................... 2,066 Q Q Q 241 376 632 184 Q 164 33.7

 Propane ........................................... 3,393 Q Q 390 401 642 786 609 201 212 27.0

 Any Other ......................................... 1,551 Q Q 475 Q Q 268 Q Q Q 33.5

Energy End Uses (more than one

may apply)

 Heated Buildings .............................. 61,996 1,637 3,329 7,717 9,371 11,548 12,814 9,398 3,878 2,303 9.5

 Air-Conditioned Buildings ................ 57,041 1,307 2,759 6,586 8,260 10,601 12,286 9,225 3,760 2,258 10.1

 Buildings with Water Heating ........... 58,479 1,457 3,126 7,004 8,784 11,006 12,369 8,869 3,696 2,167 9.9

 Buildings with Cooking ..................... 23,065 495 1,334 2,225 2,849 4,920 5,071 3,197 2,117 859 15.2

 Buildings with Manufacturing ........... 3,174 Q Q 542 748 394 652 504 Q Q 29.2

Predominant Exterior Wall Material

 Masonry ........................................... 48,585 1,483 3,286 7,530 8,651 8,536 9,277 5,635 2,662 1,526 11.2

 Siding or Shingles ............................ 3,873 193 236 588 579 560 717 716 178 105 17.2

 Metal Panels .................................... 7,392 Q Q 395 898 1,395 1,881 1,929 559 244 21.2

 Concrete Panels .............................. 4,961 Q Q Q Q 1,502 1,510 745 452 464 23.5

 Window Glass .................................. 2,028 Q Q Q Q 463 408 685 202 76 29.2

 Other ................................................ 1,037 Q Q Q Q Q 220 Q Q Q 44.3

See footnotes at end of table.

74 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A11. Year Constructed, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.5 1.6 1.1 0.9 0.9 0.7 0.9 1.5 1.2

Predominant Roof Material

 Built-Up ............................................ 30,257 565 1,430 3,996 5,716 6,568 5,907 3,563 Q 699 13.3

 Shingles (Not Wood) ........................ 10,570 523 926 1,777 1,834 1,570 2,142 1,310 283 206 15.5

 Metal Surfacing ................................ 9,019 Q Q 783 764 1,520 2,224 2,206 821 464 16.6

 Synthetic or Rubber ......................... 11,702 238 710 1,262 1,436 2,139 2,545 1,688 817 868 17.9

 Slate or Tile ...................................... 1,998 219 289 586 260 247 Q Q Q Q 25.8

 Concrete .......................................... 2,544 Q Q Q Q Q 751 762 199 159 36.5

 Other ................................................ 1,786 Q Q 132 310 223 293 502 Q Q 32.6

Floors

 One .................................................. 25,424 Q 243 2,381 4,020 5,146 5,763 4,359 2,373 994 14.5

 Two .................................................. 18,025 338 869 1,964 3,168 3,872 3,661 2,789 710 654 14.8

 Three ............................................... 9,877 481 1,012 2,067 1,702 1,365 1,963 822 243 223 17.5

 Four to Nine ..................................... 10,377 743 1,257 1,810 1,283 1,310 1,812 1,085 620 457 19.9

 Ten or More ..................................... 4,173 Q Q 490 249 918 815 1,094 192 174 27.1

Percent Window Glass

 25 or Less ........................................ 51,356 1,269 2,765 6,983 7,858 9,341 11,287 6,989 3,164 1,701 10.5

 26 to 50 ............................................ 11,815 426 677 1,233 2,068 2,390 1,817 2,119 597 488 18.0

 51 to 75 ............................................ 3,206 Q Q 479 342 468 661 625 231 215 23.7

 76 to 100 .......................................... 1,499 Q Q Q 153 Q 249 417 Q Q 35.9

Building Shape

 Square ............................................. 3,654 Q 206 573 381 736 837 533 195 Q 24.1

 Rectangle ......................................... 39,233 1,107 1,971 5,568 5,877 7,086 8,367 5,943 1,989 1,324 9.6

 Rectangle or Square with

 Courtyard ......................................... 1,372 Q Q Q Q 299 317 286 Q Q 41.0

 Right Angle ...................................... 6,071 241 Q 630 1,025 1,132 1,191 816 248 220 23.1

 Other ................................................ 17,547 287 751 1,868 2,985 3,359 3,302 2,572 Q 787 16.8

Workers (main shift)

 Less than 5 ...................................... 17,944 692 993 3,053 2,922 2,807 3,165 2,177 Q 516 13.5

 5 to 9 ................................................ 7,524 444 453 1,211 1,236 1,227 1,577 882 343 152 16.0

 10 to 19 ............................................ 8,077 167 612 933 1,611 1,211 1,812 1,142 389 201 18.6

 20 to 49 ............................................ 10,556 151 355 1,105 2,204 2,180 2,088 1,560 514 399 16.2

 50 to 99 ............................................ 7,763 Q Q 1,023 1,222 1,685 1,424 1,117 347 301 22.0

 100 to 249 ........................................ 7,378 Q 476 484 719 1,369 1,895 1,600 469 349 24.9

 250 or More ..................................... 8,633 Q Q 904 507 2,133 2,053 1,670 457 585 21.1

Weekly Operating Hours

 39 or Fewer ...................................... 8,246 385 927 1,564 1,570 1,320 1,455 686 163 176 17.8

 40 to 48 ............................................ 14,998 484 883 2,045 2,877 2,617 2,614 2,278 646 554 14.4

 49 to 60 ............................................ 14,046 363 803 2,013 2,640 2,371 2,476 2,104 616 661 14.5

 61 to 84 ............................................ 12,062 147 356 1,393 1,072 2,692 2,778 2,500 709 415 17.9

 85 to 167 .......................................... 8,467 272 402 780 1,117 1,910 2,248 920 544 273 19.8

 Open Continuously .......................... 10,057 Q 237 918 1,146 1,701 2,444 1,661 Q 423 21.8

Ownership and Occupancy

 Nongovernment Owned ................... 52,752 1,589 2,704 6,653 8,056 8,571 10,776 9,056 3,550 1,798 10.1

 Owner Occupied ............................ 38,403 1,224 1,978 4,783 6,237 6,737 8,024 6,328 1,785 1,307 9.3

 Nonowner Occupied ...................... 12,273 332 486 1,453 1,426 1,491 2,435 2,442 Q 472 19.7

 Unoccupied .................................... 2,077 Q Q 417 393 344 317 Q Q Q 28.8

 Government Owned ......................... 15,124 Q 904 2,059 2,365 4,041 3,237 1,093 588 704 16.9

Energy-Related Space Functions

(more than one may apply)

 Commercial Food Preparation ......... 22,166 495 1,334 2,225 2,849 4,924 5,067 3,197 1,217 859 13.6

 Computer Room .............................. 14,199 Q 673 1,439 1,436 3,057 2,857 2,954 794 811 16.5

 Rooms with Special Ventilation ....... 8,042 Q Q 1,030 1,051 1,840 1,951 995 367 437 18.4

 Activity with Large Amounts

 of Hot Water ..................................... 6,862 Q Q 803 908 1,244 1,856 993 371 454 21.1

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 75
Table A11. Year Constructed, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.5 1.6 1.1 0.9 0.9 0.7 0.9 1.5 1.2

Percent of Floorspace Heated

 Not Heated ....................................... 6,211 Q 325 1,119 1,053 1,084 1,292 774 262 199 25.1

 1 to 50 .............................................. 11,195 332 764 2,015 1,495 2,040 1,966 1,666 638 279 22.1

 51 to 99 ............................................ 10,211 313 590 1,208 1,581 2,061 2,039 1,636 438 345 17.0

 100 ................................................... 40,260 973 1,930 4,371 6,292 7,427 8,716 6,073 2,799 1,679 10.5

Percent of Floorspace Cooled

 Not Cooled ....................................... 10,835 414 849 2,126 2,161 2,011 1,728 925 377 244 15.7

 1 to 50 .............................................. 21,715 828 1,555 3,240 3,942 3,604 3,881 3,242 891 534 14.4

 51 to 99 ............................................ 13,872 228 679 1,492 1,636 3,167 3,035 2,339 706 590 16.2

 100 ................................................... 21,454 251 526 1,853 2,682 3,830 5,370 3,643 2,164 1,134 13.9

Percent Lit when Open

 Not Lit .............................................. 3,280 Q 321 654 554 457 630 422 Q Q 26.4

 1 to 50 .............................................. 9,980 652 1,175 1,584 1,862 1,523 1,414 1,258 231 280 18.3

 51 to 99 ............................................ 14,224 429 946 1,535 2,115 2,264 2,982 1,950 Q 413 16.1

 100 ................................................... 40,393 560 1,166 4,939 5,890 8,369 8,988 6,519 2,226 1,737 10.4

Heating Equipment (more than one

may apply)

 Heat Pumps ..................................... 8,269 Q Q 619 1,013 1,055 1,783 2,290 672 534 20.9

 Furnaces .......................................... 16,909 511 1,043 2,659 3,131 3,367 2,982 2,308 586 323 15.4

 Individual Space Heaters ................. 22,380 530 1,286 2,345 3,173 3,862 5,434 4,022 961 768 13.6

 District Heat ..................................... 5,225 91 255 1,125 545 1,363 972 524 149 202 22.8

 Boilers .............................................. 20,664 852 1,644 2,541 3,926 4,027 3,734 1,972 Q 544 14.6

 Packaged Heating Units .................. 16,000 Q 536 1,271 1,740 3,226 3,911 3,154 1,152 893 16.5

 Other ................................................ 903 Q Q Q Q Q 231 Q Q Q 36.4

Heating Distribution Equipment

(more than one may apply)

 Radiators or Baseboards ................. 13,263 773 1,569 2,737 2,556 2,296 1,994 839 246 252 16.1

 Ducts for Heating ............................. 45,422 777 2,016 4,768 6,517 8,893 9,566 7,458 3,423 2,004 11.0

 Heating Only ............................... 5,950 236 398 1,114 1,144 1,594 852 487 Q Q 24.2

 Heating and Cooling ................... 39,472 541 1,617 3,655 5,373 7,298 8,715 6,971 3,337 1,965 11.5

 Variable Air-Volume

 System ........................................ 11,528 Q 463 624 874 2,273 2,108 2,388 Q 856 21.3

 Fan Coil Units for Heating ................ 5,474 Q 324 719 932 1,125 1,219 648 Q 186 24.5

 Heating Only ............................... 3,569 Q Q 420 817 548 686 478 Q 168 32.6

 Heating and Cooling ................... 1,906 Q Q 298 Q 577 533 Q Q Q 32.0

 Individual Space Heaters ................. 22,380 530 1,286 2,345 3,173 3,862 5,434 4,022 961 768 13.6

 Other ................................................ 3,310 Q Q 356 746 764 526 432 Q Q 29.7

Cooling Equipment (more than one

may apply)

 Residential-Type Central

 Air Conditioners ............................... 9,021 232 702 1,441 1,770 1,528 1,800 992 365 190 16.9

 Heat Pumps ..................................... 8,406 Q 193 672 963 1,170 1,807 2,224 697 562 21.0

 Individual Air Conditioners ............... 17,979 702 1,675 3,223 3,183 3,603 2,586 1,630 Q 108 17.1

 District Chilled Water ....................... 2,066 Q Q Q 241 376 632 184 Q 164 33.7

 Central Chillers ................................ 12,991 Q 242 847 1,551 3,032 3,306 1,839 Q 571 18.5

 Packaged Air-Conditioning

 Units ................................................. 27,830 643 1,272 2,905 3,537 5,411 6,494 4,788 1,550 1,230 12.4

 Swamp Coolers ............................... 2,085 Q Q 186 285 510 386 428 Q Q 38.0

 Other ................................................ 268 Q Q Q Q Q Q Q Q Q 87.2

Cooling Distribution Equipment

(more than one may apply)

 Ducts for Cooling ............................. 47,755 995 2,075 4,804 6,681 8,567 10,517 8,288 3,651 2,177 10.7

 Cooling Only ............................... 8,283 454 457 1,149 1,308 1,269 1,802 1,317 315 212 19.5

 Heating and Cooling ................... 39,472 541 1,617 3,655 5,373 7,298 8,715 6,971 3,337 1,965 11.5

 Variable Air-Volume

 System ........................................ 12,430 Q 382 805 882 1,853 2,715 2,739 1,981 973 20.0

 Fan Coil Units for Cooling ................ 3,875 Q Q 545 271 922 1,139 464 Q 89 31.4

 Cooling Only ............................... 1,969 Q Q Q Q 346 606 Q Q Q 45.9

 Heating and Cooling ................... 1,906 Q Q 298 Q 577 533 Q Q Q 32.0

 Individual Air Conditioners ............... 17,979 702 1,675 3,223 3,183 3,603 2,586 1,630 Q 108 17.1

 Other ................................................ 2,919 Q Q 249 284 768 1,109 282 Q Q 37.5

See footnotes at end of table.

76 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A11. Year Constructed, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Year Constructed

RSE

Row

Factor

1899 or

Before

1900 to

1919

1920 to

1945

1946 to

1959

1960 to

1969

1970 to

1979

1980 to

1986

1987 to

1989

1990 to

1992

0.4 1.5 1.6 1.1 0.9 0.9 0.7 0.9 1.5 1.2

Lighting Equipment Types (more

than one may apply)

 Incandescent ................................... 39,221 1,303 2,412 5,674 6,729 7,220 7,853 5,131 1,592 1,305 10.1

 Standard Fluorescent ...................... 62,074 1,515 3,227 7,697 9,166 11,720 13,070 9,475 3,959 2,244 9.7

 Compact Fluorescent ....................... 8,336 Q 349 837 639 1,764 1,958 1,425 509 719 20.7

 High-Intensity Discharge .................. 17,570 Q 504 1,798 2,116 3,382 3,734 3,503 1,180 1,217 16.3

 Other ................................................ 1,612 Q Q Q Q Q 293 469 Q 110 35.4

Personal Computers and/or

Computer Terminals

 1 to 4 ................................................ 13,355 353 807 1,773 2,349 1,975 3,168 1,941 569 419 13.1

 5 to 9 ................................................ 5,970 Q 309 442 816 1,001 1,444 1,171 381 261 18.7

 10 to 19 ............................................ 6,236 Q Q 807 909 1,390 1,182 1,150 340 242 25.1

 20 to 49 ............................................ 7,439 Q 299 883 1,311 1,552 1,419 1,138 430 345 23.0

 50 to 99 ............................................ 4,908 Q Q 392 842 1,019 1,154 845 186 148 25.4

 100 to 249 ........................................ 4,220 Q Q 790 346 1,050 1,023 466 171 197 27.9

 250 or More ..................................... 5,569 Q Q 374 291 1,388 1,229 1,199 411 413 26.3

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ................. 50,311 942 2,259 4,929 6,957 9,567 11,395 8,439 3,633 2,190 10.2

 Wall Insulation ................................. 33,240 561 1,210 2,187 3,300 5,498 8,182 7,208 3,219 1,877 11.6

 Storm or Multiple Glazing ................ 29,684 1,036 1,679 3,317 3,474 4,124 5,638 5,557 3,174 1,685 12.3

 Tinted, Reflective or Shading

 Glass ................................................ 25,396 379 630 1,556 2,887 4,740 5,603 5,418 2,509 1,674 15.7

 Exterior or Interior Shading

 or Awnings ....................................... 34,071 726 1,312 3,922 4,926 6,096 6,763 5,793 2,794 1,740 12.3

 Windows that Open ......................... 28,937 1,215 2,297 4,759 6,211 5,654 4,703 2,750 827 520 12.4

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System ............ 13,970 Q 572 896 1,121 2,511 2,822 2,960 2,009 975 20.4

 Economizer Cycle ............................ 18,313 Q 1,007 1,185 1,500 3,321 4,374 3,338 2,297 1,168 17.1

 HVAC Maintenance ......................... 49,173 1,210 2,617 5,126 6,608 9,595 10,356 8,099 3,530 2,034 10.4

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ......................... 15,241 276 739 1,752 1,676 2,865 3,476 2,556 863 1,037 15.3

 Natural Lighting Control

 Sensors ............................................ 3,072 Q Q Q 375 355 1,081 442 205 377 25.3

 Occupancy Sensors ......................... 3,629 Q Q 207 296 771 868 790 Q 239 25.4

 Time Clock ....................................... 12,104 180 371 852 1,013 1,808 2,878 2,514 Q 706 20.8

 Manual Dimmer Switches ................ 12,329 391 534 988 1,572 2,413 3,082 1,979 655 715 16.8

 Other ................................................ 2,596 Q Q Q 181 610 677 395 Q 209 29.5

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............. 64,403 1,662 3,325 7,841 9,752 12,053 13,464 9,842 4,044 2,419 9.6

 Building Shell ................................... 62,056 1,620 3,269 7,532 9,484 11,695 12,754 9,463 3,902 2,338 9.8

 HVAC ............................................... 50,281 1,229 2,662 5,313 6,726 9,812 10,636 8,199 3,602 2,103 10.2

 Lighting ............................................ 29,453 659 1,368 2,943 3,384 5,219 6,680 5,052 2,519 1,627 13.1

 Other ................................................ 5,952 Q 406 604 677 1,247 1,430 860 325 275 20.6

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program .................... 1,079 Q Q Q Q 212 259 Q Q Q 33.9

 HVAC Program ................................ 6,370 Q 189 741 629 1,497 1,637 948 340 330 22.0

 Lighting Program ............................. 8,805 144 374 871 1,105 2,236 2,314 962 397 402 19.9

 Other DSM Programs ...................... 6,176 Q Q 583 701 1,729 1,457 744 352 353 25.2

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 77
Table A12. Floors, Number of Buildings and Floorspace, 1992

Building

Characteristics

 RSE Column Factor:

Number of Buildings

(thousand)

Total Floorspace

(million square feet)

RSE

Row

Factor

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

0.5 0.8 0.8 1.1 1.4 1.8 0.6 1.0 0.9 1.1 1.2 1.6

All Buildings ................................... 4,806 3,007 1,154 446 186 13 67,876 25,424 18,025 9,877 10,377 4,173 6.6

Building Floorspace (square feet)

 1,001 to 5,000 ................................ 2,681 2,009 518 133 Q Q 7,327 5,331 1,508 412 Q Q 9.1

 5,001 to 10,000 .............................. 975 525 282 121 47 Q 7,199 3,834 2,121 898 345 Q 8.7

 10,001 to 25,000 ............................ 647 310 211 100 26 Q 10,375 4,916 3,434 1,630 391 Q 10.8

 25,001 to 50,000 ............................ 280 103 81 54 42 Q 10,069 3,634 2,913 1,960 1,538 Q 12.1

 50,001 to 100,000 .......................... 116 36 35 22 21 Q 8,062 2,484 2,421 1,562 1,491 Q 13.0

 100,001 to 200,000 ........................ 71 18 20 11 18 4 9,678 2,409 2,617 1,567 2,486 598 16.2

 200,001 to 500,000 ........................ 26 5 4 4 10 4 7,889 1,315 1,252 1,125 2,916 1,281 17.9

 Over 500,000 ................................. 9 Q 2 1 1 3 7,278 Q 1,759 723 1,134 2,159 26.1

Principal Building Activity

 Education ....................................... 301 200 62 27 11 Q 8,470 2,823 2,217 2,200 1,171 Q 14.6

 Food Sales ..................................... 130 105 Q Q Q Q 757 500 Q Q Q Q 22.7

 Food Service ................................. 260 165 57 31 Q Q 1,491 763 343 226 Q Q 16.6

 Health Care .................................... 63 34 13 7 8 Q 1,763 190 152 140 925 356 26.6

 Lodging .......................................... 154 41 61 30 20 2 2,891 375 714 509 1,060 233 19.5

 Mercantile and Service ................... 1,272 893 259 102 18 Q 12,402 6,255 4,066 1,454 381 Q 13.1

 Office .............................................. 749 360 212 101 68 8 12,319 2,411 2,385 1,763 3,133 2,628 10.7

 Parking Garage .............................. 24 Q Q Q 5 Q 1,652 Q Q Q 1,311 Q 31.9

 Public Assembly ............................. 278 153 77 34 14 Q 4,556 Q 971 951 531 Q 18.0

 Public Order and Safety ................. 60 42 Q Q Q Q 820 313 Q Q Q Q 32.9

 Religious Worship .......................... 366 184 145 33 Q Q 3,747 1,073 1,788 698 Q Q 18.2

 Warehouse and Storage ................ 761 589 139 25 8 Q 11,484 6,926 3,243 754 Q Q 15.7

 Other .............................................. 69 40 18 Q 4 Q 1,130 220 476 Q 216 Q 25.4

 Vacant ............................................ 319 185 87 29 17 1 4,396 1,382 1,323 597 683 412 19.9

Year Constructed

 1899 or Before ............................... 169 Q 47 58 46 Q 1,721 Q 338 481 743 Q 20.3

 1900 to 1919 .................................. 255 52 89 75 38 Q 3,608 243 869 1,012 1,257 Q 21.4

 1920 to 1945 .................................. 724 323 227 135 37 3 8,712 2,381 1,964 2,067 1,810 490 13.9

 1946 to 1959 .................................. 880 584 214 65 15 Q 10,421 4,020 3,168 1,702 1,283 249 13.7

 1960 to 1969 .................................. 783 554 177 39 11 3 12,612 5,146 3,872 1,365 1,310 918 13.4

 1970 to 1979 .................................. 982 707 217 44 13 2 14,014 5,763 3,661 1,963 1,812 815 12.2

 1980 to 1989 .................................. 884 671 161 26 23 3 14,287 6,732 3,499 1,064 1,705 1,286 13.9

 1990 to 1992 .................................. 128 99 20 4 5 (*) 2,502 994 654 223 457 174 20.6

Census Region

 Northeast ........................................ 771 329 213 153 72 4 13,400 2,834 3,564 2,807 2,847 1,348 13.7

 Midwest .......................................... 1,202 634 361 158 47 3 17,280 5,146 5,153 3,042 2,989 950 13.0

 South .............................................. 1,963 1,456 387 84 33 3 24,577 12,892 5,660 2,255 2,714 1,056 12.2

 West ............................................... 870 588 193 51 35 4 12,619 4,552 3,649 1,772 1,827 819 14.6

Energy Sources (more than one

may apply)

 Electricity ........................................ 4,616 2,848 1,132 438 185 13 66,549 24,572 17,879 9,710 10,256 4,132 6.7

 Natural Gas .................................... 2,665 1,494 729 303 130 9 45,097 14,415 13,582 7,524 6,825 2,751 8.0

 Fuel Oil ........................................... 559 249 153 103 47 6 13,218 2,017 2,435 2,991 3,387 2,387 12.8

 District Heat .................................... 95 33 18 15 27 3 5,339 488 470 744 2,263 1,374 18.6

 District Chilled Water ...................... 28 8 7 4 9 1 2,066 160 234 226 848 599 28.5

 Propane .......................................... 337 230 76 23 Q Q 3,393 1,503 918 641 300 Q 20.9

 Any Other ....................................... 163 112 32 15 Q Q 1,551 494 465 427 Q Q 27.0

Energy End Uses (more than one

may apply)

 Heated Buildings ............................ 4,178 2,492 1,071 425 178 12 61,996 22,052 17,209 9,318 9,432 3,985 6.9

 Air-Conditioned Buildings ............... 3,502 2,065 915 354 155 12 57,041 19,852 15,749 8,622 8,755 4,063 7.2

 Buildings with Water Heating ......... 3,502 1,953 962 404 171 12 58,479 19,719 16,458 9,310 9,031 3,961 7.0

 Buildings with Cooking ................... 734 377 192 103 54 7 23,065 5,953 5,517 4,208 4,716 2,672 10.6

 Buildings with Manufacturing ......... 121 72 29 10 9 Q 3,174 1,257 998 471 401 Q 24.5

See footnotes at end of table.

78 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A12. Floors, Number of Buildings and Floorspace, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

Number of Buildings

(thousand)

Total Floorspace

(million square feet)

RSE

Row

Factor

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

0.5 0.8 0.8 1.1 1.4 1.8 0.6 1.0 0.9 1.1 1.2 1.6

Predominant Exterior Wall

Material

 Masonry ......................................... 3,115 1,802 824 336 145 8 48,585 17,203 13,092 7,951 8,076 2,264 7.7

 Siding or Shingles .......................... 764 453 203 85 23 Q 3,873 1,705 1,333 595 186 Q 12.8

 Metal Panels .................................. 745 653 82 Q Q Q 7,392 4,811 1,626 Q Q Q 14.9

 Concrete Panels ............................. 87 49 18 12 8 1 4,961 1,243 1,528 673 1,096 420 21.7

 Window Glass ................................ 46 20 14 5 5 2 2,028 183 168 228 379 1,070 28.1

 Other .............................................. 47 30 Q Q Q 1 1,037 279 Q Q Q 206 30.3

Predominant Roof Material

 Built-Up .......................................... 1,642 981 405 174 74 8 30,257 10,988 7,768 4,967 4,565 1,970 9.4

 Shingles (Not Wood) ...................... 1,381 781 405 148 46 Q 10,570 3,951 3,879 1,485 921 Q 10.4

 Metal Surfacing .............................. 1,037 871 145 16 Q Q 9,019 6,355 2,235 223 Q Q 15.5

 Synthetic or Rubber ....................... 386 180 108 64 30 4 11,702 2,588 2,987 2,278 2,594 1,256 13.3

 Slate or Tile .................................... 155 73 35 27 19 Q 1,998 468 435 450 630 Q 22.1

 Concrete ......................................... 37 19 Q 4 7 1 2,544 328 Q 187 1,346 516 32.1

 Other .............................................. 167 102 49 13 Q Q 1,786 747 554 288 Q Q 25.7

Percent Window Glass

 25 or Less ...................................... 4,193 2,717 981 363 127 5 51,356 22,587 13,872 7,257 6,511 1,129 7.6

 26 to 50 .......................................... 490 240 137 63 45 5 11,815 2,293 3,526 1,805 2,671 1,521 12.4

 51 to 75 .......................................... 94 38 28 17 8 2 3,206 380 475 730 749 872 19.9

 76 to 100 ........................................ 29 Q 8 Q 5 1 1,499 Q 152 Q 446 651 28.4

Building Shape

 Square ............................................ 280 171 77 22 8 2 3,654 1,230 698 447 547 732 18.3

 Rectangle ....................................... 3,659 2,381 830 312 129 8 39,233 17,350 10,179 4,125 5,567 2,012 7.6

 Rectangle or Square with

 Courtyard ....................................... 48 21 17 Q 2 Q 1,372 288 565 Q 308 Q 31.0

 Right Angle ..................................... 333 181 94 41 15 Q 6,071 1,833 2,147 1,233 622 Q 15.8

 Other .............................................. 485 252 136 64 32 3 17,547 4,724 4,436 3,889 3,332 1,166 13.3

Workers (main shift)

 Less than 5 ..................................... 2,718 1,922 553 193 49 Q 17,944 10,122 4,222 1,728 1,514 Q 10.5

 5 to 9 .............................................. 895 555 230 79 31 Q 7,524 3,676 2,148 909 790 Q 12.3

 10 to 19 .......................................... 561 290 181 57 33 Q 8,077 3,239 2,577 993 1,254 Q 13.1

 20 to 49 .......................................... 405 175 128 74 26 Q 10,556 4,273 3,025 2,173 956 Q 11.5

 50 to 99 .......................................... 130 47 40 25 17 Q 7,763 2,394 2,492 1,525 1,241 Q 16.7

 100 to 249 ...................................... 64 14 18 12 18 2 7,378 1,165 2,318 1,486 2,070 338 17.8

 250 or More .................................... 31 3 4 5 11 8 8,633 556 1,242 1,064 2,553 3,219 18.7

Weekly Operating Hours

 39 or Fewer .................................... 1,039 657 283 77 22 Q 8,246 3,592 2,516 1,088 706 Q 13.0

 40 to 48 .......................................... 1,278 800 302 122 52 2 14,998 6,752 3,680 2,309 1,876 381 11.5

 49 to 60 .......................................... 1,004 642 236 91 31 4 14,046 5,256 4,219 1,870 1,564 1,137 10.7

 61 to 84 .......................................... 645 415 142 60 25 3 12,062 4,454 3,458 1,639 1,355 1,156 12.7

 85 to 167 ........................................ 478 298 104 48 28 Q 8,467 2,673 2,556 1,547 1,321 Q 14.6

 Open Continuously ......................... 362 196 86 49 29 3 10,057 2,697 1,598 1,423 3,555 785 14.8

Ownership and Occupancy

 Nongovernment Owned ................. 4,206 2,626 1,022 393 154 11 52,752 21,067 14,328 6,838 7,068 3,451 7.1

 Owner Occupied .......................... 3,192 1,945 805 313 122 8 38,403 13,597 11,140 5,355 5,794 2,517 7.6

 Nonowner Occupied ..................... 817 542 177 66 30 2 12,273 6,536 2,697 1,262 1,029 749 13.8

 Unoccupied .................................. 197 140 40 Q Q Q 2,077 934 491 Q Q Q 20.7

 Government Owned ....................... 599 380 132 53 32 2 15,124 4,357 3,697 3,039 3,309 722 12.9

Lighting Equipment Types (more

than one may apply)

 Incandescent .................................. 2,509 1,293 744 317 143 11 39,221 10,327 11,064 7,073 7,278 3,478 7.7

 Standard Fluorescent ..................... 4,065 2,439 1,033 404 176 13 62,074 21,851 17,252 9,453 9,523 3,994 6.7

 Compact Fluorescent ..................... 206 93 44 35 30 5 8,336 1,204 1,776 1,189 2,498 1,667 15.2

 High-Intensity Discharge ................ 354 183 111 30 26 4 17,570 4,781 5,174 2,683 3,263 1,668 11.6

 Other .............................................. 78 47 23 Q Q Q 1,612 639 359 Q Q Q 27.9

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 79
Table A12. Floors, Number of Buildings and Floorspace, 1992 (Continued)

Building

Characteristics

 RSE Column Factor:

Number of Buildings

(thousand)

Total Floorspace

(million square feet)

RSE

Row

Factor

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

All

Buildings

One

Floor

Two

Floors

Three

Floors

Four to

Nine

Floors

Ten or

more

Floors

0.5 0.8 0.8 1.1 1.4 1.8 0.6 1.0 0.9 1.1 1.2 1.6

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ............... 3,343 2,010 857 330 137 9 50,311 18,135 14,282 7,957 6,810 3,128 7.0

 Wall Insulation ................................ 2,320 1,434 600 195 84 6 33,240 12,123 9,741 4,581 4,326 2,469 8.5

 Storm or Multiple Glazing ............... 1,680 796 498 265 114 7 29,684 8,610 8,019 5,358 5,368 2,329 9.1

 Tinted, Reflective or Shading

 Glass .............................................. 1,068 604 300 103 53 8 25,396 7,551 6,991 3,749 4,340 2,765 10.7

 Exterior or Interior Shading

 or Awnings ..................................... 1,853 992 530 223 99 9 34,071 10,608 9,124 5,459 5,945 2,935 8.5

 Windows that Open ........................ 2,119 1,159 547 276 130 6 28,937 8,652 7,540 5,499 5,615 1,632 9.3

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System .......... 250 111 67 33 32 6 13,970 2,678 3,071 2,315 3,424 2,482 14.7

 Economizer Cycle .......................... 414 176 129 61 41 8 18,313 3,944 4,629 3,045 3,772 2,923 12.3

 HVAC Maintenance ........................ 2,503 1,357 687 305 140 13 49,173 14,958 13,699 8,222 8,204 4,091 7.5

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ........................ 574 282 169 78 39 6 15,241 3,717 3,893 2,616 3,135 1,880 12.3

 Natural Lighting Control

 Sensors .......................................... 74 28 23 12 10 1 3,072 383 874 431 1,058 326 21.8

 Occupancy Sensors ....................... 59 23 19 8 7 1 3,629 407 827 400 1,189 806 20.6

 Time Clock ..................................... 339 137 115 54 28 4 12,104 2,746 3,264 2,141 2,247 1,707 15.9

 Manual Dimmer Switches .............. 413 143 143 69 53 5 12,329 1,375 3,648 2,056 3,284 1,967 12.8

 Other .............................................. 78 34 23 10 11 1 2,596 529 595 389 789 294 20.9

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............ 4,357 2,620 1,105 435 184 13 64,403 22,938 17,520 9,776 9,997 4,173 6.9

 Building Shell ................................. 4,223 2,530 1,077 424 179 13 62,056 22,066 17,097 9,558 9,289 4,046 6.9

 HVAC ............................................. 2,604 1,414 719 313 145 13 50,281 15,331 14,092 8,398 8,360 4,100 7.3

 Lighting ........................................... 1,178 541 368 166 93 10 29,453 7,256 7,994 5,049 5,841 3,313 9.4

 Other .............................................. 264 128 82 36 15 2 5,952 1,563 1,866 873 1,182 468 15.4

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

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.

80 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A13. Predominant Exterior Wall Material, Number of Buildings, 1992

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.0 1.3 1.8 2.3

All Buildings ................................... 4,806 3,115 764 745 87 46 47 8.4

Building Floorspace (square feet)

 1,001 to 5,000 ................................ 2,681 1,573 595 457 Q Q Q 10.8

 5,001 to 10,000 .............................. 975 675 105 155 14 Q Q 12.3

 10,001 to 25,000 ............................ 647 488 48 85 20 Q Q 13.6

 25,001 to 50,000 ............................ 280 211 13 31 16 8 Q 18.8

 50,001 to 100,000 .......................... 116 94 Q 6 11 Q Q 16.9

 100,001 to 200,000 ........................ 71 48 Q 8 8 2 Q 22.4

 200,001 to 500,000 ........................ 26 19 Q 1 4 1 Q 22.2

 Over 500,000 ................................. 9 7 Q 1 1 1 Q 41.2

Principal Building Activity

 Education ....................................... 301 233 43 17 4 Q Q 21.8

 Food Sales ..................................... 130 99 Q Q Q Q Q 32.7

 Food Service ................................. 260 186 60 Q Q Q Q 19.5

 Health Care .................................... 63 47 Q Q Q Q Q 33.3

 Lodging .......................................... 154 114 34 Q Q Q Q 25.7

 Mercantile and Service ................... 1,272 805 176 250 14 Q Q 12.2

 Office .............................................. 749 542 122 44 15 14 12 15.3

 Parking Garage .............................. 24 14 Q Q Q Q Q 59.6

 Public Assembly ............................. 278 186 56 26 Q Q Q 20.0

 Public Order and Safety ................. 60 47 Q Q Q Q Q 41.9

 Religious Worship .......................... 366 264 89 Q Q Q Q 21.2

 Warehouse and Storage ................ 761 326 93 303 27 Q Q 15.4

 Other .............................................. 69 43 Q 21 Q Q Q 38.5

 Vacant ............................................ 319 210 55 39 5 Q Q 21.5

Year Constructed

 1899 or Before ............................... 169 126 43 Q Q Q Q 27.3

 1900 to 1919 .................................. 255 189 60 Q Q Q Q 22.5

 1920 to 1945 .................................. 724 528 137 48 Q Q Q 15.6

 1946 to 1959 .................................. 880 667 121 71 Q Q Q 14.9

 1960 to 1969 .................................. 783 548 106 106 14 6 Q 16.7

 1970 to 1979 .................................. 982 550 141 229 27 18 17 13.9

 1980 to 1989 .................................. 884 447 132 255 27 9 13 13.9

 1990 to 1992 .................................. 128 61 26 33 6 Q Q 29.0

Census Region

 Northeast ........................................ 771 503 176 68 6 12 6 18.4

 Midwest .......................................... 1,202 759 198 215 12 Q 9 16.6

 South .............................................. 1,963 1,261 257 372 36 18 19 13.3

 West ............................................... 870 592 133 90 34 8 13 20.4

Energy Sources (more than one

may apply)

 Electricity ........................................ 4,616 3,035 715 691 85 43 46 8.3

 Natural Gas .................................... 2,665 1,951 320 292 50 27 26 10.7

 Fuel Oil ........................................... 559 373 114 48 5 9 10 18.9

 District Heat .................................... 95 77 Q 6 7 1 Q 26.4

 District Chilled Water ...................... 28 25 Q Q 2 Q Q 35.9

 Propane .......................................... 337 155 101 74 Q Q Q 25.1

 Any Other ....................................... 163 73 41 45 Q Q Q 24.7

Energy End Uses (more than one

may apply)

 Heated Buildings ............................ 4,178 2,850 635 533 76 41 42 8.5

 Air-Conditioned Buildings ............... 3,502 2,491 473 394 71 38 35 8.8

 Buildings with Water Heating ......... 3,502 2,465 514 380 74 39 30 8.7

 Buildings with Cooking ................... 734 546 125 31 15 15 1 15.3

 Buildings with Manufacturing ......... 121 74 Q 28 6 Q Q 28.0

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 81
Table A13. Predominant Exterior Wall Material, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.0 1.3 1.8 2.3

Predominant Roof Material

 Built-Up .......................................... 1,642 1,470 68 29 46 18 11 14.3

 Shingles (Not Wood) ...................... 1,381 865 448 39 6 Q Q 15.4

 Metal Surfacing .............................. 1,037 209 136 660 17 Q Q 16.0

 Synthetic or Rubber ....................... 386 318 39 5 12 8 Q 22.1

 Slate or Tile .................................... 155 124 30 Q Q Q Q 24.5

 Concrete ......................................... 37 32 Q Q 4 Q Q 46.4

 Other .............................................. 167 97 42 Q Q Q Q 30.1

Percent Window Glass

 25 or Less ...................................... 4,193 2,662 694 724 75 Q 36 8.6

 26 to 50 .......................................... 490 376 61 20 11 16 Q 17.0

 51 to 75 .......................................... 94 62 Q Q 1 20 Q 26.8

 76 to 100 ........................................ 29 15 Q Q Q 9 4 32.5

Building Shape

 Square ............................................ 280 193 43 32 5 Q Q 21.1

 Rectangle ....................................... 3,659 2,300 586 647 64 34 29 9.2

 Rectangle or Square with

 Courtyard ....................................... 48 39 Q Q Q Q Q 45.8

 Right Angle ..................................... 333 247 49 28 7 Q Q 18.3

 Other .............................................. 485 336 84 33 12 8 13 17.2

Ownership and Occupancy

 Nongovernment Owned ................. 4,206 2,707 675 669 75 38 43 8.8

 Owner Occupied .......................... 3,192 2,015 548 525 42 25 39 9.8

 Nonowner Occupied ..................... 817 570 87 115 29 11 4 16.3

 Unoccupied .................................. 197 122 39 29 Q Q Q 25.0

 Government Owned ....................... 599 408 90 75 13 9 Q 17.5

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ............... 3,343 2,222 523 477 62 28 33 9.7

 Wall Insulation ................................ 2,320 1,292 476 452 46 22 32 10.5

 Storm or Multiple Glazing ............... 1,680 1,134 343 148 26 13 15 12.0

 Tinted, Reflective or Shading

 Glass .............................................. 1,068 797 116 86 40 21 9 14.2

 Exterior or Interior Shading

 or Awnings ..................................... 1,853 1,300 301 164 37 28 23 11.1

 Windows that Open ........................ 2,119 1,393 458 232 14 6 Q 12.2

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System .......... 250 188 21 16 12 9 4 19.1

 Economizer Cycle .......................... 414 305 34 39 17 10 10 17.1

 HVAC Maintenance ........................ 2,503 1,769 344 271 61 31 27 9.8

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ........................ 574 366 74 103 22 7 2 16.9

 Natural Lighting Control

 Sensors .......................................... 74 51 Q Q 3 3 Q 31.9

 Occupancy Sensors ....................... 59 38 Q Q 4 Q Q 29.2

 Time Clock ..................................... 339 256 34 14 14 12 9 19.4

 Manual Dimmer Switches .............. 413 301 86 9 9 5 Q 19.3

 Other .............................................. 78 50 Q Q 5 Q Q 33.7

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............ 4,357 2,905 696 587 83 41 44 8.8

 Building Shell ................................. 4,223 2,821 683 560 77 39 42 8.9

 HVAC ............................................. 2,604 1,838 356 289 63 31 27 9.5

 Lighting ........................................... 1,178 810 171 124 40 17 16 11.5

 Other .............................................. 264 176 47 31 4 Q Q 23.1

See footnotes at end of table.

82 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A13. Predominant Exterior Wall Material, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.0 1.3 1.8 2.3

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program ................... 36 25 Q Q Q Q Q 43.3

 HVAC Program .............................. 154 113 16 14 5 2 Q 24.8

 Lighting Program ............................ 228 157 34 20845 22.4

 Other DSM Programs ..................... 110 84 Q 9 5 1 Q 25.5

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 83
Table A14. Predominant Exterior Wall Material, Floorspace, 1992

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.1 1.4 1.4 2.2

All Buildings ................................... 67,876 48,585 3,873 7,392 4,961 2,028 1,037 9.1

Building Floorspace (square feet)

 1,001 to 5,000 ................................ 7,327 4,401 1,536 1,255 Q Q Q 10.2

 5,001 to 10,000 .............................. 7,199 5,001 730 1,158 108 Q Q 11.4

 10,001 to 25,000 ............................ 10,375 7,867 750 1,345 325 Q Q 12.3

 25,001 to 50,000 ............................ 10,069 7,545 469 1,120 576 283 Q 19.0

 50,001 to 100,000 .......................... 8,062 6,552 Q 426 736 Q Q 16.0

 100,001 to 200,000 ........................ 9,678 6,649 Q 1,158 1,033 286 Q 21.8

 200,001 to 500,000 ........................ 7,889 5,666 Q 366 1,282 377 Q 22.9

 Over 500,000 ................................. 7,278 4,905 Q 565 Q 726 Q 37.7

Principal Building Activity

 Education ....................................... 8,470 7,714 120 145 379 Q Q 19.8

 Food Sales ..................................... 757 607 Q Q Q Q Q 32.8

 Food Service ................................. 1,491 1,156 282 Q Q Q Q 23.7

 Health Care .................................... 1,763 1,587 Q Q Q Q Q 26.5

 Lodging .......................................... 2,891 2,412 230 Q Q Q Q 25.7

 Mercantile and Service ................... 12,402 9,035 686 1,567 886 Q Q 16.6

 Office .............................................. 12,319 7,717 724 782 1,203 1,394 499 15.5

 Parking Garage .............................. 1,652 1,329 Q Q 230 Q Q 47.8

 Public Assembly ............................. 4,556 3,471 405 379 Q Q Q 44.8

 Public Order and Safety ................. 820 627 Q Q Q Q Q 51.3

 Religious Worship .......................... 3,747 3,216 440 Q Q Q Q 24.6

 Warehouse and Storage ................ 11,484 5,995 518 3,629 1,154 Q Q 18.2

 Other .............................................. 1,130 636 Q 258 Q Q Q 34.3

 Vacant ............................................ 4,396 3,082 274 418 235 Q Q 26.1

Year Constructed

 1899 or Before ............................... 1,721 1,483 193 Q Q Q Q 26.8

 1900 to 1919 .................................. 3,608 3,286 236 Q Q Q Q 28.4

 1920 to 1945 .................................. 8,712 7,530 588 395 Q Q Q 21.3

 1946 to 1959 .................................. 10,421 8,651 579 898 Q Q Q 20.7

 1960 to 1969 .................................. 12,612 8,536 560 1,395 1,502 463 Q 20.1

 1970 to 1979 .................................. 14,014 9,277 717 1,881 1,510 408 220 14.1

 1980 to 1989 .................................. 14,287 8,296 894 2,488 1,197 887 524 16.1

 1990 to 1992 .................................. 2,502 1,526 105 244 464 76 Q 20.9

Census Region

 Northeast ........................................ 13,400 9,981 1,008 930 1,003 372 106 18.8

 Midwest .......................................... 17,280 12,914 1,017 1,774 741 524 310 15.4

 South .............................................. 24,577 17,174 1,052 3,900 1,461 709 281 15.2

 West ............................................... 12,619 8,517 796 789 1,755 423 Q 17.7

Energy Sources (more than one

may apply)

 Electricity ........................................ 66,549 47,832 3,647 7,131 4,906 2,008 1,024 9.2

 Natural Gas .................................... 45,097 34,380 1,965 3,455 3,557 1,024 716 10.8

 Fuel Oil ........................................... 13,218 9,622 631 699 1,077 839 350 15.1

 District Heat .................................... 5,339 3,769 Q 331 699 Q Q 25.3

 District Chilled Water ...................... 2,066 1,630 Q Q 221 Q Q 29.1

 Propane .......................................... 3,393 2,042 453 742 Q Q Q 24.9

 Any Other ....................................... 1,551 1,123 138 198 Q Q Q 30.7

Energy End Uses (more than one

may apply)

 Heated Buildings ............................ 61,996 45,520 3,303 5,682 4,663 1,839 988 9.4

 Air-Conditioned Buildings ............... 57,041 42,084 2,625 4,854 4,563 1,978 938 9.9

 Buildings with Water Heating ......... 58,479 43,361 2,908 4,844 4,595 1,831 940 9.6

 Buildings with Cooking ................... 23,065 18,177 911 677 1,998 993 309 16.0

 Buildings with Manufacturing ......... 3,174 2,112 Q 617 298 Q Q 26.0

See footnotes at end of table.

84 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A14. Predominant Exterior Wall Material, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.1 1.4 1.4 2.2

Predominant Roof Material

 Built-Up .......................................... 30,257 24,929 507 1,097 2,417 768 540 15.8

 Shingles (Not Wood) ...................... 10,570 7,856 2,011 191 190 Q Q 16.0

 Metal Surfacing .............................. 9,019 2,162 787 5,512 385 Q Q 16.8

 Synthetic or Rubber ....................... 11,702 8,832 187 345 1,498 675 165 19.6

 Slate or Tile .................................... 1,998 1,801 167 Q Q Q Q 26.9

 Concrete ......................................... 2,544 1,952 Q Q 346 Q Q 39.7

 Other .............................................. 1,786 1,054 206 Q Q Q Q 29.9

Percent Window Glass

 25 or Less ...................................... 51,356 36,972 3,282 7,026 3,639 Q 358 9.5

 26 to 50 .......................................... 11,815 9,265 502 257 1,157 316 Q 20.1

 51 to 75 .......................................... 3,206 1,923 Q Q 135 820 Q 18.4

 76 to 100 ........................................ 1,499 426 Q Q Q 813 224 29.5

Building Shape

 Square ............................................ 3,654 2,733 193 229 202 Q Q 19.7

 Rectangle ....................................... 39,233 26,511 2,655 5,820 2,673 1,115 458 10.0

 Rectangle or Square with

 Courtyard ....................................... 1,372 1,105 Q Q Q Q Q 37.7

 Right Angle ..................................... 6,071 4,836 272 560 310 Q Q 23.2

 Other .............................................. 17,547 13,400 713 711 1,705 523 495 18.5

Ownership and Occupancy

 Nongovernment Owned ................. 52,752 36,656 3,519 6,591 3,235 1,736 1,015 9.6

 Owner Occupied .......................... 38,403 26,445 2,935 5,126 1,890 1,202 804 9.9

 Nonowner Occupied ..................... 12,273 8,944 394 1,197 1,166 380 192 17.9

 Unoccupied .................................. 2,077 1,267 190 268 Q Q Q 30.6

 Government Owned ....................... 15,124 11,929 354 801 1,726 292 Q 18.7

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ............... 50,311 36,344 2,783 5,129 3,871 1,413 771 9.7

 Wall Insulation ................................ 33,240 21,698 2,499 4,779 2,250 1,163 850 10.4

 Storm or Multiple Glazing ............... 29,684 21,861 2,044 2,319 1,989 991 481 11.9

 Tinted, Reflective or Shading

 Glass .............................................. 25,396 17,813 804 1,557 3,102 1,401 719 14.4

 Exterior or Interior Shading

 or Awnings ..................................... 34,071 25,497 1,744 2,148 2,617 1,333 732 10.6

 Windows that Open ........................ 28,937 22,916 2,050 2,227 1,312 239 Q 16.3

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System .......... 13,970 9,433 195 720 1,934 1,120 568 20.7

 Economizer Cycle .......................... 18,313 12,976 411 1,069 2,316 1,070 472 16.6

 HVAC Maintenance ........................ 49,173 36,110 2,189 3,869 4,195 1,938 872 10.4

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ........................ 15,241 9,954 666 1,741 1,891 737 253 14.9

 Natural Lighting Control

 Sensors .......................................... 3,072 2,253 Q Q 339 159 Q 22.1

 Occupancy Sensors ....................... 3,629 2,100 Q Q 609 296 Q 20.2

 Time Clock ..................................... 12,104 8,270 368 411 1,665 836 554 21.9

 Manual Dimmer Switches .............. 12,329 8,681 771 387 1,257 962 271 19.2

 Other .............................................. 2,596 1,748 Q Q 416 Q Q 24.0

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............ 64,403 46,720 3,562 6,355 4,754 2,000 1,011 9.3

 Building Shell ................................. 62,056 45,091 3,510 6,093 4,485 1,879 999 9.3

 HVAC ............................................. 50,281 37,029 2,238 3,995 4,209 1,938 872 10.2

 Lighting ........................................... 29,453 20,672 1,373 2,052 3,120 1,492 744 12.7

 Other .............................................. 5,952 4,601 298 516 317 152 Q 19.2

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 85
Table A14. Predominant Exterior Wall Material, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

of All

Buildings

Floorspace by Exterior Wall Material

RSE

Row

Factor

Masonry

Siding

or Shingles

Metal

Panels

Concrete

Panels

Window

Glass Other

0.4 0.5 0.9 1.1 1.4 1.4 2.2

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program ................... 1,079 793 Q Q Q Q Q 35.4

 HVAC Program .............................. 6,370 4,528 213 328 779 335 Q 24.0

 Lighting Program ............................ 8,805 6,074 316 406 1,342 399 269 18.1

 Other DSM Programs ..................... 6,176 4,084 Q 283 1,285 317 Q 21.8

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.

86 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A15. Predominant Roof Material, Number of Buildings, 1992

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.6 0.7 0.9 0.9 1.4 2.6 1.7

All Buildings ..................................... 4,806 1,642 1,381 1,037 386 155 37 167 7.7

Building Floorspace (square feet)

 1,001 to 5,000 .................................. 2,681 772 927 648 140 75 Q 108 11.5

 5,001 to 10,000 ................................ 975 369 250 209 79 38 Q 29 11.6

 10,001 to 25,000 .............................. 647 265 137 122 75 25 Q 15 12.9

 25,001 to 50,000 .............................. 280 124 49 39 39 12 Q 11 17.0

 50,001 to 100,000 ............................ 116 55 11 11 30 4 Q Q 20.4

 100,001 to 200,000 .......................... 71 41 5 8 11 Q 3 Q 22.5

 200,001 to 500,000 .......................... 26 12 1 Q 10 Q 2 Q 22.7

 Over 500,000 ................................... 9 5 Q Q 2 Q 1 Q 36.9

Principal Building Activity

 Education ......................................... 301 127 68 34 41 16 Q 14 20.0

 Food Sales ....................................... 130 62 29 Q Q Q Q Q 32.9

 Food Service ................................... 260 109 77 29 20 Q Q Q 22.2

 Health Care ...................................... 63 25 19 Q 6 Q Q Q 37.8

 Lodging ............................................ 154 56 66 Q 9 10 Q Q 24.3

 Mercantile and Service .................... 1,272 490 285 330 102 Q Q 44 11.3

 Office ............................................... 749 279 258 63 85 34 Q 28 14.5

 Parking Garage ................................ 24 Q Q Q Q Q 7 Q 24.8

 Public Assembly .............................. 278 62 107 44 26 18 Q 19 19.6

 Public Order and Safety ................... 60 20 Q Q 8 Q Q Q 34.2

 Religious Worship ............................ 366 37 256 29 Q 25 Q Q 21.3

 Warehouse and Storage .................. 761 219 113 362 36 Q Q Q 16.0

 Other ................................................ 69 16 Q 24 12 Q Q Q 36.4

 Vacant .............................................. 319 138 70 75 20 Q Q Q 20.1

Year Constructed

 1899 or Before ................................. 169 53 56 Q 20 17 Q Q 25.7

 1900 to 1919 .................................... 255 93 93 Q 26 14 Q Q 22.8

 1920 to 1945 .................................... 724 294 222 75 62 33 Q 33 16.1

 1946 to 1959 .................................... 880 375 269 99 79 25 Q 27 15.9

 1960 to 1969 .................................... 783 328 206 146 55 22 6 20 14.7

 1970 to 1979 .................................... 982 287 285 285 59 Q 7 40 13.4

 1980 to 1989 .................................... 884 195 217 345 67 22 12 27 14.2

 1990 to 1992 .................................... 128 17 33 50 17 Q 1 Q 27.7

Census Region

 Northeast ......................................... 771 226 278 106 100 40 2 19 14.5

 Midwest ............................................ 1,202 346 369 269 152 23 5 38 14.6

 South ............................................... 1,963 665 532 537 98 45 20 65 12.7

 West ................................................. 870 405 202 126 35 47 9 46 19.0

Energy Sources (more than one

may apply)

 Electricity ......................................... 4,616 1,596 1,347 947 378 153 35 160 7.6

 Natural Gas ...................................... 2,665 1,042 755 404 267 87 17 92 9.2

 Fuel Oil ............................................ 559 169 190 85 73 22 2 16 18.3

 District Heat ..................................... 95 40 10 11 14 13 Q Q 26.9

 District Chilled Water ....................... 28 11 Q Q 6 Q Q Q 36.0

 Propane ........................................... 337 55 137 112 14 Q Q Q 25.6

 Any Other ......................................... 163 29 50 59 Q Q Q Q 25.8

Energy End Uses (more than one

may apply)

 Heated Buildings .............................. 4,178 1,489 1,246 763 368 140 22 150 7.6

 Air-Conditioned Buildings ................ 3,502 1,319 1,025 576 318 113 27 124 8.3

 Buildings with Water Heating ........... 3,502 1,284 1,044 554 328 136 20 135 8.0

 Buildings with Cooking ..................... 734 285 232 74 80 22 7 33 13.3

 Buildings with Manufacturing ........... 121 50 18 36 13 Q Q Q 28.7

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 87
Table A15. Predominant Roof Material, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.6 0.7 0.9 0.9 1.4 2.6 1.7

Predominant Exterior Wall Material

 Masonry ........................................... 3,115 1,470 865 209 318 124 32 97 8.7

 Siding or Shingles ............................ 764 68 448 136 39 30 Q 42 17.2

 Metal Panels .................................... 745 29 39 660 5 Q Q Q 24.1

 Concrete Panels .............................. 87 46 6 17 12 Q 4 Q 27.9

 Window Glass .................................. 46 18 Q Q 8 Q Q Q 46.5

 Other ................................................ 47 11 Q Q Q Q Q Q 52.8

Percent Window Glass

 25 or Less ........................................ 4,193 1,369 1,231 1,003 302 115 33 139 8.0

 26 to 50 ............................................ 490 222 115 30 67 34 2 21 14.1

 51 to 75 ............................................ 94 39 31 Q 13 Q Q Q 30.2

 76 to 100 .......................................... 29 13 Q Q 3 Q Q Q 40.4

Building Shape

 Square ............................................. 280 121 61 54 27 Q 1 Q 20.6

 Rectangle ......................................... 3,659 1,213 1,027 884 271 111 30 124 8.6

 Rectangle or Square with

 Courtyard ......................................... 48 22 Q Q Q Q Q Q 44.2

 Right Angle ...................................... 333 112 120 41 35 Q Q 15 17.0

 Other ................................................ 485 174 164 53 47 26 Q 18 15.8

Ownership and Occupancy

 Nongovernment Owned ................... 4,206 1,427 1,264 921 298 131 30 137 8.0

 Owner Occupied ............................ 3,192 958 1,059 697 234 104 21 119 8.7

 Nonowner Occupied ...................... 817 392 164 165 55 22 7 13 15.5

 Unoccupied .................................... 197 76 41 59 Q Q Q Q 23.7

 Government Owned ......................... 599 216 118 116 88 24 7 30 15.6

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ................. 3,343 1,120 1,010 682 291 106 18 116 8.2

 Wall Insulation ................................. 2,320 611 745 609 176 73 11 94 9.6

 Storm or Multiple Glazing ................ 1,680 465 614 254 200 74 6 68 10.8

 Tinted, Reflective or Shading

 Glass ................................................ 1,068 445 278 147 121 30 12 36 12.8

 Exterior or Interior Shading

 or Awnings ....................................... 1,853 720 547 258 196 73 5 54 10.6

 Windows that Open ......................... 2,119 599 822 352 156 92 10 89 10.4

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System ............ 250 109 49 22 43 16 Q 7 18.7

 Economizer Cycle ............................ 414 166 83 51 75 16 4 20 16.6

 HVAC Maintenance ......................... 2,503 960 677 384 265 105 17 95 9.3

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ......................... 574 197 131 137 63 20 3 23 15.7

 Natural Lighting Control

 Sensors ............................................ 74 31 20 Q 4 Q Q Q 32.0

 Occupancy Sensors ......................... 59 29 Q Q 10 Q Q Q 28.7

 Time Clock ....................................... 339 164 81 30 34 13 5 12 18.2

 Manual Dimmer Switches ................ 413 129 155 32 52 24 Q 19 17.0

 Other ................................................ 78 30 16 Q 14 Q Q Q 31.8

See footnotes at end of table.

88 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A15. Predominant Roof Material, Number of Buildings, 1992 (Continued)

 (Thousand)

Building

Characteristics

 RSE Column Factor:

All

Buildings

Buildings by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.6 0.7 0.9 0.9 1.4 2.6 1.7

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............. 4,357 1,512 1,281 853 373 149 32 157 8.0

 Building Shell ................................... 4,223 1,449 1,266 821 363 146 25 152 8.1

 HVAC ............................................... 2,604 998 712 401 270 107 17 98 9.1

 Lighting ............................................ 1,178 426 327 196 124 50 9 45 10.6

 Other ................................................ 264 78 79 44 35 10 Q 14 19.8

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program .................... 36 8 Q Q 6 Q Q Q 41.3

 HVAC Program ................................ 154 66 24 26 23 6 Q Q 22.3

 Lighting Program ............................. 228 80 58 27 37 12 Q 12 20.1

 Other DSM Programs ...................... 110 43 20 17 19 Q Q Q 29.0

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 89
Table A16. Predominant Roof Material, Floorspace, 1992

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

or All

Buildings

Floorspace by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.7 0.9 0.9 0.8 1.5 2.3 1.6

All Buildings ................................... 67,876 30,257 10,570 9,019 11,702 1,998 2,544 1,786 8.6

Building Floorspace (square feet)

 1,001 to 5,000 ................................ 7,327 2,170 2,463 1,776 391 215 Q 284 11.9

 5,001 to 10,000 .............................. 7,199 2,752 1,791 1,569 592 275 Q 203 11.5

 10,001 to 25,000 ............................ 10,375 4,357 2,149 1,899 1,258 357 Q 234 12.5

 25,001 to 50,000 ............................ 10,069 4,407 1,797 1,391 1,451 445 Q 379 17.0

 50,001 to 100,000 .......................... 8,062 3,873 777 781 2,013 275 Q (*) 19.5

 100,001 to 200,000 ........................ 9,678 5,456 648 1,082 1,557 Q 499 Q 22.5

 200,001 to 500,000 ........................ 7,889 3,446 466 Q 2,912 Q 486 Q 22.8

 Over 500,000 ................................. 7,278 3,796 Q Q 1,528 Q 1,001 Q 33.7

Principal Building Activity

 Education ....................................... 8,470 4,272 746 403 2,322 364 Q 254 19.6

 Food Sales ..................................... 757 375 161 Q Q Q Q Q 34.3

 Food Service ................................. 1,491 590 436 96 207 Q Q Q 27.2

 Health Care .................................... 1,763 1,062 123 Q 507 Q Q Q 29.0

 Lodging .......................................... 2,891 1,191 782 Q 538 225 Q Q 27.7

 Mercantile and Service ................... 12,402 5,898 1,569 2,093 2,126 Q Q 286 17.0

 Office .............................................. 12,319 5,525 1,891 934 2,995 269 255 450 16.8

 Parking Garage .............................. 1,652 Q Q Q Q Q 1,136 Q 29.3

 Public Assembly ............................. 4,556 2,138 864 588 597 183 Q 129 31.5

 Public Order and Safety ................. 820 362 Q Q (*) Q Q Q 48.9

 Religious Worship .......................... 3,747 636 2,128 159 Q 580 Q Q 26.6

 Warehouse and Storage ................ 11,484 5,409 911 3,569 1,105 Q Q Q 19.2

 Other .............................................. 1,130 378 Q 302 255 Q Q Q 34.6

 Vacant ............................................ 4,396 2,055 686 615 519 Q Q Q 30.0

Year Constructed

 1899 or Before ............................... 1,721 565 523 Q 238 219 Q Q 29.0

 1900 to 1919 .................................. 3,608 1,430 926 Q 710 289 Q Q 30.4

 1920 to 1945 .................................. 8,712 3,996 1,777 783 1,262 586 Q 132 20.6

 1946 to 1959 .................................. 10,421 5,716 1,834 764 1,436 260 Q 310 18.1

 1960 to 1969 .................................. 12,612 6,568 1,570 1,520 2,139 247 Q 223 19.5

 1970 to 1979 .................................. 14,014 5,907 2,142 2,224 2,545 Q 751 293 14.3

 1980 to 1989 .................................. 14,287 5,376 1,593 3,027 2,504 206 960 620 17.4

 1990 to 1992 .................................. 2,502 699 206 464 868 Q 159 Q 21.4

Census Region

 Northeast ........................................ 13,400 4,889 2,434 853 3,757 526 556 384 17.6

 Midwest .......................................... 17,280 6,375 3,213 2,064 4,318 385 Q 361 14.5

 South .............................................. 24,577 11,653 3,168 5,098 2,615 577 917 551 14.9

 West ............................................... 12,619 7,341 1,755 1,004 1,012 511 506 490 17.1

Energy Sources (more than one

may apply)

 Electricity ........................................ 66,549 29,764 10,321 8,639 11,595 1,990 2,505 1,735 8.8

 Natural Gas .................................... 45,097 21,299 6,515 4,313 9,387 1,309 1,152 1,122 10.5

 Fuel Oil ........................................... 13,218 5,791 1,684 675 3,760 309 680 319 16.9

 District Heat .................................... 5,339 2,413 459 329 1,477 400 Q Q 27.0

 District Chilled Water ...................... 2,066 969 Q Q 626 Q Q Q 35.9

 Propane .......................................... 3,393 1,068 699 858 403 Q Q Q 27.8

 Any Other ....................................... 1,551 724 281 269 Q Q Q Q 33.2

Energy End Uses (more than one

may apply)

 Heated Buildings ............................ 61,996 28,271 9,764 7,121 11,541 1,863 1,741 1,695 9.2

 Air-Conditioned Buildings ............... 57,041 26,404 8,606 6,077 10,893 1,608 1,909 1,544 9.6

 Buildings with Water Heating ......... 58,479 27,321 8,942 5,991 11,207 1,889 1,538 1,591 9.4

 Buildings with Cooking ................... 23,065 11,267 2,927 1,153 6,039 675 570 435 16.0

 Buildings with Manufacturing ......... 3,174 1,712 185 651 444 Q Q Q 29.4

See footnotes at end of table.

90 Energy Information Administration/Commercial Buildings Characteristrics 1992
Table A16. Predominant Roof Material, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

or All

Buildings

Floorspace by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.7 0.9 0.9 0.8 1.5 2.3 1.6

Predominant Exterior Wall

Material

 Masonry ......................................... 48,585 24,929 7,856 2,162 8,832 1,801 1,952 1,054 10.7

 Siding or Shingles .......................... 3,873 507 2,011 787 187 167 Q 206 17.4

 Metal Panels .................................. 7,392 1,097 191 5,512 345 Q Q Q 24.1

 Concrete Panels ............................. 4,961 2,417 190 385 1,498 Q 346 Q 28.1

 Window Glass ................................ 2,028 768 Q Q 675 Q Q Q 31.0

 Other .............................................. 1,037 540 Q Q 165 Q Q Q 53.3

Percent Window Glass

 25 or Less ...................................... 51,356 22,455 8,542 8,623 7,245 1,361 1,782 1,349 9.8

 26 to 50 .......................................... 11,815 5,461 1,424 302 3,155 503 590 379 18.0

 51 to 75 .......................................... 3,206 1,664 361 Q 895 Q Q Q 25.3

 76 to 100 ........................................ 1,499 677 Q Q 407 Q Q Q 31.3

Building Shape

 Square ............................................ 3,654 1,656 439 402 785 Q Q Q 24.2

 Rectangle ....................................... 39,233 16,439 6,248 7,141 5,664 1,042 1,623 1,076 9.8

 Rectangle or Square with

 Courtyard ....................................... 1,372 827 Q Q Q Q Q Q 36.0

 Right Angle ..................................... 6,071 2,587 1,383 684 1,170 Q Q 150 23.0

 Other .............................................. 17,547 8,749 2,347 776 3,941 744 553 437 17.1

Ownership and Occupancy

 Nongovernment Owned ................. 52,752 23,928 9,166 7,817 7,271 1,546 1,638 1,387 9.1

 Owner Occupied .......................... 38,403 15,568 7,642 6,013 5,401 1,352 1,335 1,091 9.3

 Nonowner Occupied ..................... 12,273 7,450 1,212 1,412 1,647 147 147 258 18.4

 Unoccupied .................................. 2,077 910 313 392 Q Q Q Q 28.3

 Government Owned ....................... 15,124 6,329 1,404 1,203 4,431 452 906 399 17.6

Building Shell Conservation

Features (more than one may

apply)

 Roof or Ceiling Insulation ............... 50,311 22,615 7,342 6,327 10,107 1,380 1,105 1,435 9.5

 Wall Insulation ................................ 33,240 14,028 5,003 5,663 6,061 806 583 1,097 11.0

 Storm or Multiple Glazing ............... 29,684 12,010 5,134 2,836 7,150 1,094 661 800 12.3

 Tinted, Reflective or Shading

 Glass .............................................. 25,396 12,851 2,704 1,838 6,000 604 767 632 14.5

 Exterior or Interior Shading

 or Awnings ..................................... 34,071 17,415 4,411 2,793 7,138 1,154 420 741 11.1

 Windows that Open ........................ 28,937 11,974 6,324 2,704 5,301 1,351 550 733 12.0

HVAC Conservation Features

(more than one may apply)

 Variable Air-Volume System .......... 13,970 6,851 879 534 4,298 513 533 363 21.7

 Economizer Cycle .......................... 18,313 8,630 1,381 918 6,021 356 506 500 18.3

 HVAC Maintenance ........................ 49,173 22,887 6,655 4,517 10,465 1,654 1,617 1,378 10.2

Lighting Conservation Features

(more than one may apply)

 Specular Reflectors ........................ 15,241 6,933 1,734 1,723 3,627 341 556 328 15.8

 Natural Lighting Control

 Sensors .......................................... 3,072 1,491 197 Q 756 Q 303 Q 25.5

 Occupancy Sensors ....................... 3,629 1,932 Q Q 1,229 Q Q Q 23.3

 Time Clock ..................................... 12,104 6,637 818 544 2,770 219 792 325 20.8

 Manual Dimmer Switches .............. 12,329 5,238 1,993 432 3,531 531 153 452 17.1

 Other .............................................. 2,596 1,254 209 Q 684 Q Q Q 27.4

See footnotes at end of table.

Energy Information Administration/Commercial Buildings Characteristrics 1992 91
Table A16. Predominant Roof Material, Floorspace, 1992 (Continued)

 (Million Square Feet)

Building

Characteristics

 RSE Column Factor:

Total

Floorspace

or All

Buildings

Floorspace by Roof Material

RSE

Row

Factor

Built-Up

Shingles

(Not Wood)

Metal

Surfacing

Synthetic

or Rubber

Roofing

Slate

or Tile Concrete Other

0.4 0.7 0.9 0.9 0.8 1.5 2.3 1.6

Energy Conservation Features

(more than one may apply)

 Any Conservation Features ............ 64,403 29,187 10,018 7,593 11,560 1,961 2,337 1,747 8.8

 Building Shell ................................. 62,056 28,249 9,880 7,310 11,420 1,924 1,558 1,715 8.9

 HVAC ............................................. 50,281 23,371 6,932 4,652 10,631 1,690 1,621 1,384 10.0

 Lighting ........................................... 29,453 13,917 3,841 2,299 6,340 861 1,296 900 11.9

 Other .............................................. 5,952 2,639 733 600 1,307 228 Q 136 19.2

Demand-Side Management

Programs (more than one may

apply)

 Building Shell Program ................... 1,079 341 Q Q 492 Q Q Q 32.3

 HVAC Program .............................. 6,370 3,217 412 453 1,864 131 Q Q 21.9

 Lighting Program ............................ 8,805 3,760 918 387 3,179 235 184 142 20.5

 Other DSM Programs ..................... 6,176 2,633 472 358 2,382 Q Q Q 27.7

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

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.

92 Energy Information Administration/Commercial Buildings Characteristrics 1992