Roof Joist Spacing Calculator

Span calculator for wood joists and rafters also available for.

Roof joist spacing calculator.

Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal. This is the distance between joist centres. Span calculator for wood joists and rafters available for the iphone. This demo version is fixed at 1m clear span.

Span calculator for wood joists and rafters also available for the. 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. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. Live load psf dead load psf span calculator for wood joists and rafters available for the iphone.

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. Click on a span to generate a full calculation you can adjust the exact span. This span table is to the format and methodology given in bs 5268 7 2. Spacing in live load psf dead load psf exterior exposure.

Find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres. The full version allows any size. These spans were calculated using our flat roof joist calculation. Flat roof joist calculator.