Open Web Floor Truss Span Charts

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Open web floor truss span charts.

The open web nature of the trimjoist is ideal for plumbing electrical and a c duct work. Use the span tables below to determine allowable lengths of joists and rafters based on size and standard design loads. Open joist by asc span charts. Find out more about load opening charts and requirements for the trimjoist floor truss system.

As the name trimjoist indicates our product can be trimmed on the construction site for a custom fit. And parallel to floor truss span strongback lateral supports 24 max. Top and bottom chords braced by structural sheathing 6. Roof floor truss manual 7 31 08 10 43 am page 12.

The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel. Spacing of trusses are center to center in inches. 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. The versatility of the trimjoist is unmatched by any other pre engineered wood joist product.

Live load l 480 total load l 360 5. 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. Tcdl 10 psf and bcdl 5 psf 3.

Dead load deflection is limited to l 360 and total load deflection is limited to l 240. No more custom made floor trusses. Find span carts for open joist products. The maximum span is measured o c.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Tcll top chord floor live load 2. Openings are to be located in the center of the span max opening width is 24 inches 7. 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. Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. Maximum deflection is limited by l 360 or l 480 under live load. Spans shown are in feet 4.

Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring.