Open Web Roof Truss Span Table

Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

Open web roof truss span table.

The spans are based on simple span joists. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. Spacing of trusses are center to center in inches. Of bearings and is based on uniformly loaded joists.

The maximum span is measured o c. Total load psf duration factor live load psf roof type 55 1 15 40 snow shingle 55 1 15 30 snow tile 47 30 snow 40 20 snow 1 25 20. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Floor truss span chart each individual floor truss design is unique based on multiple variables.

Span tables below illustrate common combinations of the multiple variables available. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Keep in mind that these tables are for estimations only. You can use sbca s span charts to roughly determine truss sizes available.

Redbuilt open web trusses offer a variety of solutions for a broad range of challenges. Geometry loading spacing bearing conditions etc. Included are a series of representative roof truss span tables that will give you an idea of the truss spans available for a particular load condition load duration lumber type and truss configuration. Alpine truss designs are engineered to meet specific span configuration and load conditions.