I Joist Roof Span Table

Use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.

I joist roof span table.

Straight line interpolation shall be permitted for intermediate spans and design values. Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum. The calculated spans assume fully supported members properly sheathed and nailed on the top edge of the joist or rafter. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720.

High pitch 6 12 to 12 12 16 17 load bearing cantilever tables 18 21. These span tables assume installation of at least three joists or rafters that are spaced not more than 24 on center. For the bird s mouth roof joist bearing detail. Use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope.

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