Roof Joist Span Table

View joist rafter tables.

Roof joist span table.

For example the highlighted cell below shows that a 2 x 6 southern yellow pine joist with a grade of 2 and spaced 24 apart can have a maximum span of 10 feet 0 inches 10 0 if you are designing your structure to support a plaster ceiling. For each application a pdf download is available. Span calculator for wood joists and rafters also available for the android os. 1 inch 25 4 mm 1 foot 304 8 mm 1 pound per square foot 0 0479kpa.

Span tables use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Tables listing maximum spans for southern pine joists and rafters are detailed below. Simplified maximum span tables for selected visual and mechanical grades of southern pine lumber in sizes 2 4 thru 2 12. Listed are 46 tables based on common loading conditions for floor joists ceiling joists and rafters.

Joist and rafter span tables. If this is the case with your structure use the floor joist table to determine maximum joist length load. Also available for the android os.