Structural Wood Floor Joists

1 ft 0 3048 m.

Structural wood floor joists. This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. If you re concerned about the structural integrity of sagging cracked or twisted joists in your house first call in a structural engineer to inspect the floor and recommend strengthening measures that ll take out the sags and bring the framing up to code search online or for engineers structural in the yellow pages. I joists are comprised of top and bottom flanges which resist bending united with webs which provide outstanding shear resistance. Wood i joists with dimension lumber top and bottom chords and osb web.

I joists are strong lightweight i shaped engineered wood structural members that meet demanding performance standards. It is a structural type waterproof resorcinol glue that is nes and. Open web trusses with wood webbing held together with metal plates. 1 psf lb f ft 2 47 88 n m 2.

True floor joist span calculations can only be made by a structural engineer or contractor. As for the adhesive that we use for our finger jointed webs it has proven itself. Every joist is individually tested to ensure that only proven joists are shipped to a job site. 2 grade of douglas fir are indicated below.

Dead load weight of structure and fixed loads 10 lbs ft 2. Types of joists two types of engineered joists are most frequently used in floor systems today.