Open Web Floor Trusses Span Chart

Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities.

Open web floor trusses span chart.

Maximum deflection is limited by l 360 or l 480 under live load. The maximum span is measured o c. Spacing of trusses are center to center in inches. The open web nature of the trimjoist is ideal for plumbing electrical and a c duct work.

Floor joist scab cantilever floor cantilevered perpendicular and parallel to floor truss span strongback lateral supports 24 max. 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. Of bearings and is based on uniformly loaded joists. Openings are to be located in the center of the span max opening width is 24 inches 7.

Engineered wood products ewp span and size charts for bci joists. Tcll top chord floor live load 2. Live load l 480 total load l 360 5. Tcdl 10 psf and bcdl 5 psf 3.

No more custom made floor trusses. 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. Top and bottom chords braced by structural sheathing 6. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

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. The versatility of the trimjoist is unmatched by any other pre engineered wood joist product. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Spans shown are in feet 4. Roof floor truss manual 7 31. The re engineering of the wooden floor joist that.

Open joist by asc span charts. Dead load deflection is limited to l 360 and total load deflection is limited to l 240. This also reduces the need and cost for extra bearing posts beams and footings. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms.

The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Find out more about load opening charts and requirements for the trimjoist floor truss system.