Open Web Floor Truss Span Charts

Top and bottom chords braced by structural sheathing 6.

Open web floor truss span charts.

Open joist by asc span charts. This also reduces the need and cost for extra bearing posts beams and footings. 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. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00.

Tcdl 10 psf and bcdl 5 psf 3. Tcll top chord floor live load 2. Spacing of trusses are center to center in inches. Dead load deflection is limited to l 360 and total load deflection is limited to l 240.

No more custom made floor trusses. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities.

The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. 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. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths.

The versatility of the trimjoist is unmatched by any other pre engineered wood joist product. As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. Openings are to be located in the center of the span max opening width is 24 inches 7. The maximum span is measured o c.

Roof truss span tables alpine engineered products 15 top chord 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 2x4 2x6 2x6 bottom chord 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2x4 2x4 2x6 2 12 24 24 33 27 27 37 31 31 43 33 33 46 2 5 12 29 29 39 33 33 45 37 38 52 39 40 55 3 12 34 34 46 37 39 53 40 44 60 43 46 64 3 5 12 39 39 53 41 44 61 44 50 65 47 52 70. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Live load deflection is limited to l 360. Find out more about load opening charts and requirements for the trimjoist floor truss system.

Maximum deflection is limited by l 360 or l 480 under live load. The open web nature of the trimjoist is ideal for plumbing electrical and a c duct work. And parallel to floor truss span strongback lateral supports 24 max. Roof floor truss manual 7 31 08 10 43 am page 12.

Find span carts for open joist products.