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A structural steel beam supports a roof that weighs 20 psf. An analysis of the loads has the following: S=12 psf, Lr=18 psf and W=38 psf (upwards) or 16 psf (downwards). If the beams are spaced 6 ft 0 in apart, determine the factored uniformly distributed loads per foot (upward and downward, if appropriate) by which each beam should be designed.

A structural steel beam supports a roof that weighs 20 psf. An analysis of the loads has the following: S=12 psf, Lr=18 psf and W=38 psf (upwards) or 16 psf (downwards). If the beams are spaced 6 ft 0 in apart, determine the factored uniformly distributed loads per foot (upward and downward, if appropriate) by which each beam should be designed.

Architectural Drafting and Design (MindTap Course List)
Architectural Drafting and Design (MindTap Course List)
7th Edition
ISBN:9781285165738
Author:Alan Jefferis, David A. Madsen, David P. Madsen
Publisher:Alan Jefferis, David A. Madsen, David P. Madsen
Chapter29: Design Criteria For Structural Loading
Section: Chapter Questions
Problem 29.2P
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A structural steel beam supports a roof that weighs 20 psf. An analysis of the loads has the following: S=12 psf, Lr=18 psf and W=38 psf (upwards) or 16 psf (downwards). If the beams are spaced 6 ft 0 in apart, determine the factored uniformly distributed loads per foot (upward and downward, if appropriate) by which each beam should be designed.
Transcribed Image Text:A structural steel beam supports a roof that weighs 20 psf. An analysis of the loads has the following: S=12 psf, Lr=18 psf and W=38 psf (upwards) or 16 psf (downwards). If the beams are spaced 6 ft 0 in apart, determine the factored uniformly distributed loads per foot (upward and downward, if appropriate) by which each beam should be designed.
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