Extraordinary Live Load in Office Buildings
Publication: Journal of Structural Engineering
Volume 117, Issue 11
Abstract
Loads due to extraordinary events are investigated using data from the Sydney live‐load survey. A total of 1,989 extraordinary events of normal crowding, emergency crowding, and furniture stacking are studied. Parameters for a multiple extraordinary load model are obtained from the actual survey data. It is observed that not just the number of extraordinary load cells but all other parameters are area dependent. The mean and standard deviation of the number of people in a crowd for both normal crowding and emergency crowding decrease with decreasing floor area. Load due to furniture stacking shows a similar trend of variation. The numbers of load cells for the three types of extraordinary events are also observed to be different. Data from the present survey are compared with those from previous surveys. Present parameters are compared with values assumed by previous investigators. Extraordinary loads are predicted by using the extraordinary load model with the present parameters. They are observed to be, in general, 30% larger than values obtained using parameters assumed by previous workers.
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References
1.
Choi, E. C. C. (1988). “Data structure and data processing procedures for live loads and fire loads in office buildings.” Technical Record 524, Nat. Bdg. Tech. Ctr., Sydney, Australia.
2.
Choi, E. C. C. (1989). “Live load model for office buildings.” J. Inst. of Struct. Engrs., 67(24), 421–437.
3.
Chalk, P. L., and Corotis, R. B. (1980). “Probability model for design live load.” J. Struct. Div., ASCE, 106(10), 2017–2033.
4.
Corotis, R. B., and Tsay, W. Y. (1983). “Probabilistic load duration model for live loads.” J. Struct. Div., ASCE, 109(4), 859–874.
5.
Ellingwood, B., and Culver, C. (1977). “Analysis of live load in office buildings.” J. Struct. Div., ASCE, 103(8), 1551–1560.
6.
Harris, M. E., Corotis, R. B., and Bova, C. J. (1981). “Area‐dependent processes for structural loads.” J. Struct. Div., ASCE, 107(5), 857–872.
7.
McGuire, R. K., and Cornell, C. A. (1974). “Live load effects in office buildings.” J. Struct. Div., ASCE, 100(7), 1351–1366.
8.
Mitchell, G. R., and Woodgate, R. W. (1971). “Floor loading in office buildings—The results of a survey.” CP3/71, Building Research Station, Garston, U.K.
9.
Paloheimo, E., and Ollila, M. (1973). Research in the live loads in persons. Ministry of Domestic Affairs, Finland.
10.
Peir, J. C. (1971). “A stochastic live load model for buildings.” Research Report R71‐35, School of Engrg., Massachusetts Inst. of Tech., Cambridge, Mass.
11.
White, C. M. (1931). “Survey of live load in offices.” First Interim report, Steel Structures Res. Committee, HMSO, London, England, 45–65.
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Copyright © 1991 ASCE.
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Published online: Nov 1, 1991
Published in print: Nov 1991
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