I Joist Roof Span Table

Use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope.

I joist roof span table.

Straight line interpolation shall be permitted for intermediate spans and design values. For the bird s mouth roof joist bearing detail. Engineered wood products ewp span and size charts for bci joists. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720.

Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum. This performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span tables. High pitch 6 12 to 12 12 16 17 load bearing cantilever tables 18 21. Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.

Span calculator for wood joists and rafters also available for the android os. Also available for the android os.