TECHNICAL PAPERS
Nov 1, 1990

Live Load for Office Buildings: Effect of Occupancy and Code Comparison

Publication: Journal of Structural Engineering
Volume 116, Issue 11

Abstract

The present paper presents results of a live‐load survey in office buildings. A live‐load model for the calculation of lifetime maximum total load is calibrated by using the Sydney survey data. Loading characteristics for government and nongovernment occupancies are compared. Sustained load for government occupancy is observed to be greater. However, as the frequency of occupancy change is much higher for nongovernment occupancies, their lifetime maximum sustained load for small areas becomes larger. For large and medium areas, government occupancy still has higher loading. Three types of extraordinary load are identified. Parameters for all three types of government occupancy have higher values than nongovernment ones. The maximum mean extraordinary load and also the lifetime maximum total load are substantially larger for government occupancy. The 95% fractile lifetime total load predicted by the model is compared with the Standard Association of Australia (SAA) loading code, American Building Officials and Code Administrators (BOCA) building code, and the U.K. loading code.

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References

1.
BOCA National Building Code. (1987). Bldg. Officials and Code Admin. Int., Inc., Ill.
2.
Choi, E. C. C. (1988). “Data structure and data processing procedures for live loads and fire loads in office buildings.” Technical Record 524, Nat. Bldg. Tech. Ctr., Australia.
3.
Choi, E. C. C. (1989). “Live load model for office buildings.” J. Inst. Struct. Engrs., 67(24), 421–437.
4.
Corotis, R. B., and Doshi, V. A. (1977). “Probability models for live load survey results.” J. Struct. Div., ASCE, 103(6), 1257–1274.
5.
Culver, C. G. (1976a). “Live‐load survey results for office building.” J. Struct. Div., ASCE, 102(12), 1269–2284.
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Culver, C. G. (1976b). “Survey results for fire load and live loads in office buildings.” NBS Building Science Series 85, Nat. Bureau of Standards, Washington, D.C.
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“Dead and live loads and load combinations.” (1989). Australian Standard 1170.1, SAA Loading Code.
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“Design loading for buildings, code of practice for dead and imposed loads.” (1984). British Standard 6399, British Standards Inst.
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Ellingwood, B., and Culver, C. (1977). “Analysis of live load in office buildings.” J. Struct. Div., ASCE, Aug., 103(8), 1551–1560.
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Harris, M. E., Corotis, R. B., and Bova, C. J. (1981). “Area‐dependent processes for structural live loads.” J. Struct. Div., ASCE, 107(5), 857–872.
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McGuire, R. K., and Cornell, C. A. (1974). “Live load effects in office buildings.” J. Struct. Div., ASCE, 100(7), 1351–1366.
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Mitchell, G. R., and Woodgate, R. W. (1971). “Floor loading in office buildings—The results of a survey.” CP3/71, Building Res. Station, Garston, U.K.
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Peir, J. C. (1971). “A stochastic live load model for buildings.” Research report R71‐35, School of Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.

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Go to Journal of Structural Engineering
Journal of Structural Engineering
Volume 116Issue 11November 1990
Pages: 3162 - 3174

History

Published online: Nov 1, 1990
Published in print: Nov 1990

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Authors

Affiliations

Edmund C. C. Choi, Member, ASCE
Sr. Res. Sci., CSIRO Div. of Bldg., Constr. and Engrg., NBTC, 87 Delhi Road, North Ryde, NSW 2113, Australia

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