Roof Joist Spacing Calculator

Span calculator for wood joists and rafters also available for.

Roof joist spacing calculator.

Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope. Span calculator for wood joists and rafters also available for the. Usually 400 450 or 600mm but any value can be used up to 610mm max. Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.

Spacing in exterior exposure. Live load psf dead load psf span calculator for wood joists and rafters available for the iphone. 1 enter joist details 1 1 span and joist spacing. This demo version is fixed at 1m clear span.

The full version allows any size. Span calculator for wood joists and rafters available for the iphone. These spans were calculated using our flat roof joist calculation. Spacing in live load psf dead load psf exterior exposure.

This span table is to the format and methodology given in bs 5268 7 2. This is the distance between joist centres. Our roof rafter calculator tools are handy for calculating the number of rafters needed rafter length calculator lineal feet of rafter board feed in ridge and sub facia and the total board feet in the roof. Flat roof joist calculator.