Maximum Span Calculator
for Wood Joists & Rafters
www.awc.org
Species
Size
Grade
Member Type
Deflection Limit
Spacing (in)
Exterior Exposure
Wet service conditions?

Incised lumber?
Live Load (psf)
Dead Load (psf)
















       
spancalc
Span Calculator for Wood Joists and Rafters available for the iPhone.
spancalc_google
Span Calculator for Wood Joists and Rafters also available for the Android OS.