Roof Joist Calculator
Span (feet) Joist Spacing (inches) 12 inches16 inches24 inches Live Load (psf) Dead Load (psf) Building Length (feet) Calculate Reset Recommended Joist Size — Number of Joists Needed 0 Total Load 0 psf Roof joists play a vital role in supporting the structural integrity of a building. Proper sizing and spacing are essential to ensure…