Open Web Roof Truss Span Table

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.

Open web roof truss span table.

Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. You can use sbca s span charts to roughly determine truss sizes available. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size. 72 5 0 mi ni m u m girder floor truss floor truss jacks a a bearing wall girder floor truss floor truss jacks bearing wall cantilevered floor truss two 2x rim joists 24 max.

And parallel to floor truss span strongback lateral supports 24 max. Keep in mind that these tables are for estimations only. The maximum span is measured o c. Span tables below illustrate common combinations of the multiple variables available.

Alpine truss designs are engineered to meet specific span configuration and load conditions. Floor truss span chart each individual floor truss design is unique based on multiple variables. Of bearings and is based on uniformly loaded joists. 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.

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. 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. The open web nature of the trimjoist is ideal for plumbing electrical find out more about load opening charts and requirements for the trimjoist floor truss system.

Geometry loading spacing bearing conditions etc. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

The versatility of the trimjoist is unmatched by any other pre engineered wood joist product. Redbuilt open web trusses offer a variety of solutions for a broad range of challenges. Roof rafter span use this table to determine the maximum lengths of roof rafters based on species and grade of lumber spacing dimensions load and slope. Maximum deflection is limited by l 360 or l 480 under live load.

Spacing of trusses are center to center in inches.