Span calculator for wood joists and rafters available for the iphone.
Roof joist spacing calculator.
This demo version is fixed at 1m clear span.
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.
Spacing in exterior exposure.
This is the distance between joist centres.
Spacing in live load psf dead load psf exterior exposure.
Click on a span to generate a full calculation you can adjust the exact span.
Live load psf dead load psf span calculator for wood joists and rafters available for the iphone.
Span calculator for wood joists and rafters also available for.
Rise and run means that a 6 12 pitch roof has 6 of rise vertical for each foot of run horizontal.
These spans were calculated using our flat roof joist calculation.
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.
Usually 400 450 or 600mm but any value can be used up to 610mm max.
This span table is to the format and methodology given in bs 5268 7 2.
Span calculator for wood joists and rafters also available for the.
Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.
Find the column for your dead load and spacing and the row for your timber size to find the permissible clear span in metres.