Engineered Floor Trusses Spans

Knowing which span length of the joists.

Engineered floor trusses spans.

Basic lumber design values are f 2000 psi f 1100 psi f 2000 psi e 1 800 000 psi duration of load 1 00. Floor trusses have built in openings which can be used to install hvac ductwork plumbing lines and electrical wiring. Spacing of trusses are center to center in inches. 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.

Fire safe construction 3 floor performance and tj pro rating 4 5 section 1. Tcll top chord floor live load 2. Floor truss span tables alpine engineered products 17 these allowable spans are based on nds 91. Silent floor joists continue to set the standard for residential floor and roof joists.

Spans shown are in feet 4. I joists can be custom made for plans that require unusual sizes. Engineered wood products ewp span and size charts for bci joists. Live load is weight of furniture wind snow and more.

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. Engineered for dimensional stability and predictable performance silent floor joists resist warping twisting. Tji joist specifier s guide tj 4000 july 2019. 1 ft 0 3048 m.

Dead load weight of structure and fixed loads 10 lbs ft 2. Floor trusses can span farther between bearing points than i joists allowing for larger open rooms. Apa performance rated i joists pris are manufactured in accordance with pri 400 performance standard for apa ews i joists form x720 this performance standard provides an easy to use table of allowable spans for applications in residential floor construction allowing designers and builders to select and use i joists from various member manufacturers using just one set of span. Openings are to be located in the center of the span max opening width is 24 inches 7.

This also reduces the need and cost for extra bearing posts beams and footings. The typical engineered floor joist is made of lumber in the shape of an i thus commonly called an i joist. Tcdl 10 psf and bcdl 5 psf 3. 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.

Floor joists are available in several depths and lengths that are sufficient for most residential and commercial building plans. Top and bottom chords braced by structural sheathing 6. Live load l 480 total load l 360 5. Their strength and long lengths give you the freedom to design the open spacious floor plans that your customers want.

Maximum deflection is limited by l 360 or l 480 under live load. Maximum floor joist span for no.