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.

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 load span tables shown below demonstrate only a tiny subset of the possible combinations available with trussteel cfs roof trusses. Redbuilt open web trusses offer a variety of solutions for a broad range of challenges. 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.

Keep in mind that these tables are for estimations only. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. 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.

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 maximum span is measured o c. Spacing of trusses are center to center in inches.

And parallel to floor truss span strongback lateral supports 24 max. The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers. Span tables below illustrate common combinations of the multiple variables available. Maximum deflection is limited by l 360 or l 480 under live load.

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. Floor truss span chart each individual floor truss design is unique based on multiple variables. 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 versatility of the trimjoist is unmatched by any other pre engineered wood joist product. 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. 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.

Roof floor truss manual 7 31 08 10 43 am page 12.