I Joist Roof Span Table

Engineered wood products ewp span and size charts for bci joists.

I joist roof span table.

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. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720. Also available for the android os.

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. Use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. Straight line interpolation shall be permitted for intermediate spans and design values. 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 android os. These span tables assume installation of at least three joists or rafters that are spaced not more than 24 on center.