Area-Dependent Processes for Structural Live Loads

by Michael E. Harris, Engr.; Hazelet and Erdal, Chicago, Ill.,
Carl J. Bova, (A.M.ASCE), Design Engr.; Harza Engrg., Chicago, Ill.,
Ross B. Corotis, (M.ASCE), Prof. of Civ. Engrg.; Northwestern Univ., The Technological Inst., Dept. of Civ. Engrg., Evanston, Ill. 60201,

Serial Information: Journal of the Structural Division, 1981, Vol. 107, Issue 5, Pg. 857-872

Document Type: Journal Paper


Previously developed live load process models for building loads are generalized to include area dependence for several different occupancies. Several approximations in the process models are investigated through more rigorous expressions. A number of simplifying assumptions employed in deriving lifetime maximum total load statistics are substantiated by simulation of lifetime processes with sustained and extraordinary load components. A multiple extraordinary load model more realistically reflects a variety of unusual loading situations; multiple load occurrence and finite duration are included. Mean lifetime maximum total loads for a few different occupancies are seen to be in general agreement with various model code formulations, and a need for greater data in indicated.

Subject Headings: Maximum loads | Load duration | Live loads | Load factors | Approximation methods | Statistics | Agreements and treaties | Building codes

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