Open Web Floor Trusses Span Tables

Our open joist system the strength of the triangulation the accuracy of multiple joints optimizing the use of wood in a responsible manner and adjustment flexibility to the site makes the triforce open joist the only floor open joist and adjustable made entirely of wood and assembled without a metal connector.

Open web floor trusses span tables. Floor joist scab cantilever floor cantilevered perpendicular and parallel to floor truss span strongback lateral supports 24 max. Spacing of trusses are center to center in inches. 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. No more custom made floor trusses.

Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit.

Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. The versatility of the trimjoist is unmatched by any other pre engineered wood joist product. Floor truss span chart each individual floor truss design is unique based on multiple variables.

Find out more about load opening charts and requirements for the trimjoist floor truss system. You can also use the wood beam calculator from. The re engineering of the wooden floor joist that. The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.

Maximum deflection is limited by l 360 or l 480 under live load. Find span carts for open joist products. Trimjoist is the marriage of an open web floor truss and a trimmable wooden i joist bringing the best features of each to the relationship. Dead load deflection is limited to l 360 and total load deflection is limited to l 240.

Span tables use these tables to determine rafter span ceiling joist span and floor joist span. Geometry loading spacing bearing conditions etc. Of bearings and is based on uniformly loaded joists. Roof floor truss manual 7 31.

Span tables below illustrate common combinations of the multiple variables available. 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 tables alpine engineered products 17 these allowable spans are based on nds 91. This also reduces the need and cost for extra bearing posts beams and footings.