Different Types Of Floor Joists

They re often somewhat interchangeable though one usually works best for a specific joist construction project than others and most projects feature various types in different places.

Different types of floor joists.

True floor joist span calculations can only be made by a structural engineer or contractor. Builders generally use pre calculated tables to tell them appropriate joist spans for each lumber species size and spacing. This is because they are. Types of floor joists.

For example the i joist is normally most common for floor construction where the joist needs to span great distances over basements or enclosed crawl spaces. Marches building supplies floor joists floor framing system floor framing system floor joist system for mezzanine floors floor joists what is a joist. Open web trusses with wood webbing held together with metal plates. These joists are usually utilized in structural engineering applications.

They are mainly utilized to support the floors as well as the ceiling in large buildings and bridges. Brian ashworth april 21 2014. Floor joists solid lumber tji s lvl and open web trusses. Two types of engineered joists are most frequently used in floor systems today.

Types of floor joist systems. Floor joist spacing for i joist and 19 2 spacing for open web because the floor plywood tends to get bouncy. Floor joist stiffness has most to do with the span of the floor joist. But if you have a suspended floor or you have a two storey house your structure will need joists.

Wood i joists with dimension lumber top and bottom chords and osb web. Build a single storey house on a slab and you don t need joists. I joists have major advantages in high volume construction with standard layouts. But local building codes should always be consulted since unusual situations may call for different span recommendations.

Other than the floor stiffness i would not recommend going more than 16 o c. The three main types of floor joists used in home construction are solid lumber i joists and open web floor trusses.