Open Web Floor Trusses Span Chart

Bci joists are specially constructed i joists with flanges made from strong versa lam laminated veneer lumber with oriented stranded board webs and approved waterproof structural adhesives providing outstanding strength and durability.

Open web floor trusses span chart. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Find out more about load opening charts and requirements for the trimjoist floor truss system. The re engineering of the wooden floor joist that. The spans are based on simple span joists.

Maximum deflection is limited by l 360 or l 480 under live load. This also reduces the need and cost for extra bearing posts beams and footings. Openings are to be located in the center of the span max opening width is 24 inches 7. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91.

Roof floor truss manual 7 31. Of bearings and is based on uniformly loaded joists. Spans shown are in feet 4. 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. 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. The open web nature of the trimjoist is ideal for plumbing electrical and a c duct work. Tcdl 10 psf and bcdl 5 psf 3.

No more custom made floor trusses. Open joist by asc span charts. The maximum span is measured o c. Dead load deflection is limited to l 360 and total load deflection is limited to l 240.

Find span carts for open joist products. Engineered wood products ewp span and size charts for bci joists. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. 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 minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Floor joist scab cantilever floor cantilevered perpendicular and parallel to floor truss span strongback lateral supports 24 max. Tcll top chord floor live load 2.

Top and bottom chords braced by structural sheathing 6. The versatility of the trimjoist is unmatched by any other pre engineered wood joist product.