Open Web Roof Truss Span Table

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.

Open web roof truss span table.

Keep in mind that these tables are for estimations only. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Alpine truss designs are engineered to meet specific span configuration and load conditions.

Of bearings and is based on uniformly loaded joists. Maximum deflection is limited by l 360 or l 480 under live load. 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. Floor joist span use this table to determine the maximum lengths of floor joists based on species of lumber joist spacing and joist size.

The maximum span is measured o c. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. 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. You can use sbca s span charts to roughly determine truss sizes available.

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. The load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses. 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. 05425 cold formed steel trusses roof truss spans every trussteel roof truss is a custom design based upon the unique load span bearing use and code criteria of a particular project.

Redbuilt open web trusses offer a variety of solutions for a broad range of challenges. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. And parallel to floor truss span strongback lateral supports 24 max.

Spacing of trusses are center to center in inches. The spans are based on simple span joists. Roof floor truss manual 7 31 08 10 43 am page 12. Floor truss span chart each individual floor truss design is unique based on multiple variables.

Geometry loading spacing bearing conditions etc.