Open Web Roof Truss Span Table

Alpine truss designs are engineered to meet specific span configuration and load conditions.

Open web roof truss span table.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Redbuilt open web trusses offer a variety of solutions for a broad range of challenges. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

Geometry loading spacing bearing conditions etc. 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. Keep in mind that these tables are for estimations only. Span tables below illustrate common combinations of the multiple variables available.

Whether your project is for retail or office space a school multi family apartments condos assisted living facilities hotels and motels warehouses you name it an open floor plan is often a primary requirement. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. 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. Of bearings and is based on uniformly loaded joists.

Spacing of trusses are center to center in inches. Maximum deflection is limited by l 360 or l 480 under live load. The spans are based on simple span joists. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.