Wood Floor Truss Span Chart

2 strongback bracing is not considered.

Wood floor truss span chart. Table 9 2 adjustment factors for alternate loading and spacing conditions for determining required com pression perpendicular to grain design values f c for joists and rafters. Clear spans shown on this chart are presented under the following conditions. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Geometry loading spacing bearing conditions etc.

Live dead 12 16 19 2 24. Adjustment factors are tabulated in table 9 2. Maximum deflection is limited by l 360 or l 480 under live load. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.

3 assumes composite action with a single layer of 3 4 wood sheathing glued and nailed or screwed. 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. 4 see a 1 3 for 2 span floor joist requirements. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

4 spans are clear. 1 bearing size varies and is determined by loading conditions truss span and truss spacing. Roof floor truss manual 7 31 08 10 43 am page 12. Span tables below illustrate common combinations of the multiple variables available.

Floor truss span chart each individual floor truss design is unique based on multiple variables. Loads psf on center spacing in. Engineered wood products ewp span and size charts for bci joists.