Open Web Floor Truss Span Charts

Of bearings and is based on uniformly loaded joists.

Open web floor truss span charts.

Tcll top chord floor live load 2. The maximum span is measured o c. 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. Roof floor truss manual 7 31 08 10 43 am page 12.

Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. Maximum deflection is limited by l 360 or l 480 under live load. Spans shown are in feet 4. 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. Tcdl 10 psf and bcdl 5 psf 3. You can also use the wood beam calculator from the american wood council website to determine maximum rafter and joist lengths. 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. Open joist by asc span charts. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring.

Open joist is a revolutionary open web all wood floor truss engineered with superior strength and load carrying capabilities. Top and bottom chords braced by structural sheathing 6. Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Live load deflection is limited to l 360.

No more custom made floor trusses. Dead load deflection is limited to l 360 and total load deflection is limited to l 240. And parallel to floor truss span strongback lateral supports 24 max. This also reduces the need and cost for extra bearing posts beams and footings.

The versatility of the trimjoist is unmatched by any other pre engineered wood joist product. The open web nature of the trimjoist is ideal for plumbing electrical and a c duct work. Live load l 480 total load l 360 5. Openings are to be located in the center of the span max opening width is 24 inches 7.

The minimum bearing length is 1 spans values in bold indicate that web stiffeners are required at the osb end panel.