Development of a probability based load criterion for American national standard A58

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Development of a probability based load criterion for American national standard A58

Author: Bruce Ellingwood, Theodore V. Galambos, James G. MacGregor and C. Allan Cornell | Size: 4.14 MB | Format: PDF | Publisher: U.S. Dept. of Commerce, National Bureau of Standards | Year: 1980 | pages: 222

Development of a probability based load criterion for American national standard A58 : building code requirements for minimum design loads in buildings and other structures

[Washington, D.C.] : U.S. Dept. of Commerce, National Bureau of Standards : for sale by the Supt. of Docs., U.S. Govt. Print. Off., NBS special publication ; 577, 1980

Recommended load factors and load combinations are presented which are compatible with the loads recommended in the proposed 1980 version of American National Standard A58, Building Code Requirements for Minimum Design Loads in Buildings and Other Structures (ANSI A58.1-1980 D). The load effects considered are due to dead, occupancy live, snow, wind and earthquake loads. The load factors were developed using concepts of probabilistic limit states design which incorporate state-of-the-art load and resistance models and available statistical information. Re1iabi1ities associated with representative structural members and elements designed according to current (1979) structural specifications were calculated for reinforced and prestressed concrete, structural steel, cold-formed steel, aluminum, masonry and glued-laminated timber construction. The report presents the rationale for selecting the criterion format and load factors and describes the methodology to be followed by material specification groups for determining resistance factors consistent with the implied level of reliability and the statistical data. The load factors are intended to apply to all types of structural materials used in building construction.

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