Engineered Floor Trusses Spans

Fire safe construction 3 floor performance and tj pro rating 4 5 section 1.

Engineered floor trusses spans.

Tji joist specifier s guide tj 4000 july 2019. 1 ft 0 3048 m. 9 16 tji joists design properties 6 floor span and load tables 7 8 tips for preventing floor noise 8 allowable holes 9 cantilevers 10 11 roof span and load tables 12 13 framing connectors 14 15. 1 psf lb f ft 2 47 88 n m 2.

Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Maximum floor joist span for no. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Tcll top chord floor live load 2.

Spans shown are in feet 4. Engineered wood products ewp span and size charts for bci joists. I joists can be custom made for plans that require unusual sizes. Openings are to be located in the center of the span max opening width is 24 inches 7.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. 2 grade of douglas fir are indicated below. Silent floor joists continue to set the standard for residential floor and roof joists. Maximum deflection is limited by l 360 or l 480 under live load.

Top and bottom chords braced by structural sheathing 6. Joists come in two foot incremental lengths beginning at 4 feet and spanning as far as 30 feet and can be trimmed by up to 24 inches. Their strength and long lengths give you the freedom to design the open spacious floor plans that your customers want. Floor joists are available in several depths and lengths that are sufficient for most residential and commercial building plans.

Tcdl 10 psf and bcdl 5 psf 3. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. 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. Engineered for dimensional stability and predictable performance silent floor joists resist warping twisting.

Live load is weight of furniture wind snow and more. Spacing of trusses are center to center in inches. Live load l 480 total load l 360 5. The typical engineered floor joist is made of lumber in the shape of an i thus commonly called an i joist.

The engineered strength of the trimjoist system provides for longer spans and wider on center spacing that results in lower costs from both the material and the labor perspective. Knowing which span length of the joists.