3. Open web steel joists are to be used to construct a roof with a unit dead load of 20 psf (including the weight of the
Posted: Thu Apr 28, 2022 8:36 pm
3. Open web steel joists are to be used to construct a roof with a unit dead load of 20 psf (including the weight of the joists) and unit live load of 25 psf. The joist spacing is 4'-0" 0.c. with a span of 30'-0". Select the lightest joist if deflection under live load is limited to L/360. Show calculations to determine plf. (10 points)