Maximum deflection is limited by l 360 or l 480 under live load.
Engineered wood floor truss spans.
Contractors and builders know that a mitek engineered roof or floor truss ensures quality and efficiency.
Open web trusses with wood webbing held together with metal plates.
Floor truss span chart each individual floor truss design is unique based on multiple variables.
Span tables below illustrate common combinations of the multiple variables available.
Trusses i joists engineered lumber.
Wood i joists with dimension lumber top and bottom chords and osb web.
Trusses i joists engineered lumber get great deals and big savings on trusses at menards.
Mitek trusses save money because costs are known in advance there s no guesswork.
The typical engineered floor joist is made of lumber in the shape of an i thus commonly called an i joist.
If you are adding on or starting a new building project menards has everything you will need to get started.
Two types of engineered joists are most frequently used in floor systems today.
Alpine truss designs are engineered to meet specific span configuration and load conditions.
Because i joists are straight and true it s easier for builders to avoid crowning and maintain a level framing surface.
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.
They are ideal for long spans including continuous spans over intermediate supports.
Load span charts.
I joists have major advantages in high volume construction with standard layouts.
Click to add item 18 x 8 trimmable end floor truss to the compare list.
18 maximum spans why use wood trusses.
Tcll 40 psf tcll 80 psf tcll 125 psf truss spacing truss spacing truss spacing.
The shapes and spans shown here represent only a fraction of the millions of designs produced by alpine engineers.
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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.
Floor joists are available in several depths and lengths that are sufficient for most residential and commercial building plans.
Floor truss span tables alpine engineered products17 these allowable spans are based on nds 91.
I joists can be custom made for plans that require unusual sizes.
Total load psf duration factor live load psf roof type.
Geometry loading spacing bearing conditions etc.