Roof I Joists Span Table

If this is the case with your structure use the floor joist table to determine maximum joist length load.

Roof i joists span table.

Span calculator for wood joists and rafters also available for the android os. Ceiling joist span use this table to determine the maximum lengths of ceiling joists based on species of lumber joist spacing and joist size. Straight line interpolation shall be permitted for intermediate spans and design values. 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.

These span tables assume installation of at least three joists or rafters that are spaced not more than 24 on center. Roof span and load tables 12 13 framing connectors 14 15 section 2. Design information for all joists tji joist floor framing 24. Rafter spans can be extended slightly beyond what the rafter tables suggest when there is a cantelever extending beyond the supporting wall.

Engineered wood products ewp span and size charts for bci joists. Ilevel brings the most innovative and trusted products for residential construction together. The calculated spans assume fully supported members properly sheathed and nailed on the top edge of the joist or rafter. Also available for the android os.

Design properties 16 floor span and load tables 17 allowable holes 18 roof span and load tables 19 cantilevers 20 21 framing connectors 22 23 section 3. For the bird s mouth roof joist bearing detail. High pitch 6 12 to 12 12 16 17 load bearing cantilever tables 18 21. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720.

Ceiling joists of the first floor of a two story structure often serve as floor joists for the second floor. Web stiffeners shall be cut to fit between the flanges of the lp solidstart i joist leaving a minimum 1 8 gap 1 maximum. 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. Joist span tables use these tables to determine lengths sizes and spacing of ceiling joists.