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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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 117 • Issue 11 • November 1991
Pages: 3216 - 3227
Copyright
Copyright © 1991 ASCE.
History
Published online: Nov 1, 1991
Published in print: Nov 1991
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