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Structural steel beams are to be placed at 7ft 6in on center under a reinforced concrete floor slab. If they are to support a service

Structural steel beams are to be placed at 7ft 6in on center under a reinforced concrete floor slab. If they are to support a service dead load D=64 psf of floor area and a service live load L=100 psf of floor area, determine the factored uniform load per foot which each beam must support.

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