I Joist Roof Span Table
Span calculator for wood joists and rafters also available for the android os.
I joist roof span table. 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. 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. The calculated spans assume fully supported members properly sheathed and nailed on the top edge of the joist or rafter. Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum.
High pitch 6 12 to 12 12 16 17 load bearing cantilever tables 18 21. For the bird s mouth roof joist bearing detail. Engineered wood products ewp span and size charts for bci joists. Also available for the android os.
Straight line interpolation shall be permitted for intermediate spans and design values. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720.