Strongest Wood For Floor Joist

Sistered solid wood joists.

Strongest wood for floor joist.

A mere 1 2 inch thick plate of steel bolted between two planks of wood can carry much bigger loads than wood alone and thus the whole beam can be sized smaller. It has the added benefit of being adjustable onsite. Steel has tensile strength which makes it an excellent material for joists or carrying beams when paired with lumber in a flitch beam. I joists are comprised of top and bottom flanges which resist bending united with webs which provide outstanding shear resistance.

True floor joist span calculations can only be made by a structural engineer or contractor. They are composed of a top and bottom flange usually a 2 4 with a piece of plywood or osb fixed perpendicular in between. Wood i joists sometimes called tji s resemble steel i beams. Open joist triforce.

Also available for the android os. Joists can impact many things such as flooring plan safety from fire materials that can be installed for surfaces and even quality of air under the house. Wood joist rather i joist is an unique man made wood product having immense strength compared to its size and look. Triforce costs less than open web trusses yet is as strong and as rigid.

I joists are strong lightweight i shaped engineered wood structural members that meet demanding performance standards. After several centuries of service floor joists in older homes may sag or crack. Long spans of joists in newer homes may wobble or bounce from foot traffic. Span calculator for wood joists and rafters also available for the android os.

A compelling engineered wood floor alternative. Triforce joists can fill the bill for any type of wood frame construction. When a load is applied to a joist the wood fibers along the bottom edge go into tension and those along the top go into compression fig. 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.

How to make floor joists stronger. Totaljoist is an easy to install cold formed steel floor joist that offers a robust simplified framing solution compared to traditional wood or steel joists.