Assume that the floor joist dimensions of Example 14-13 are changed to 3 in. by 12 in. a...

Assume that the floor joist dimensions of Example 14-13 are changed to 3 in. by 12 in. and that they are spaced 16 in. on centers. The wood and span length remain the same. Calculate

(a) the allowable superimposed uniformly distributed load for each joist in lb/ft

(b) the allowable superimposed uniformly distributed floor load in psf

Example 14-13

A factory building floor is supported by 3-in.-by-16-in. (S4S) Douglas fir joists spaced 24 in. on center and on a span length of 16 ft. Assume the joists to be simply supported beams. (a) Calculate the allowable uniformly distributed load w for each joist in lb/ft. (b) Calculate the allowable uniformly distributed floor load in pounds per square foot (psf).