Research Article
May 1973
Spatial and Temporal Variability of Live Loads
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VIEW THE REPLYPublication: Journal of the Structural Division
Volume 99, Issue 5
Abstract
A probabilistic model of sustained live occupancy loads on buildings is presented, compared with data, and analyzed to produce equivalent uniformly distributed loads (EUDLs) for structural load effects corresponding to a specified probability of being exceeded. The model of load intensity is a linear form including building, floor, and local spatial variation. The latter term is assumed to have exponentially decaying spatial correlation. Temporal variation is assumed to occur at random times associated with changes of one or more independent occupants. Influence surfaces permit translation to structural load effects. The model is compared and fitted to data from the English Building Research Station office loads survey. Results for sustained and maximum lifetime sustained load effects are shown. Figures compare 99% EUDLs for column axial forces and beam moments versus model U. S. and Canadian building codes.
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Published In
Journal of the Structural Division
Volume 99 • Issue 5 • May 1973
Pages: 903 - 922
Copyright
© 1973 American Society of Civil Engineers.
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Published in print: May 1973
Published online: Feb 1, 2021
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Jong-Cherng Peir, AM.ASCE
Design Engr., Gibbs and Hill, Inc., New York, N.Y.; formerly Grad. Student, MIT, Cambridge, Mass.
C. Allin Cornell, AM.ASCE
Assoc. Prof. of Civ. Engrg., MIT, Cambridge, Mass.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.