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A simply supported beam spans 20 ft. and carries a uniformly distributed load of 1 kip/ft,including...

A simply supported beam spans 20 ft. and carries a uniformly distributed load of 1 kip/ft,including the beam self-weight, and a live load of 2.5kip/ft. Determine the minimum required plastic section modulus and select the lightest-weight W-Shape to carry the moment (A992 Steel). Use LRFD method.

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