I Joist Floor Construction

The three main types of floor joists used in home construction are solid lumber i joists and open web floor trusses.

I joist floor 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. Roseburg rfpi i joists are used in floor and roof construction and are engineered to make the job easier. I joists are engineered wood members normally used in residential and commercial construction in substitution of dimensional lumber joists such as 2 x10 and 2 x 12. They are ideal for long spans including continuous spans over intermediate supports.

Rules for cutting holes in pri joists 1. They provide consistent performance for the most demanding residential applications. Bli 60 wood i joist 11 875 in x 2 5 in x 24 ft. Joists the horizontal members that span two walls and or beams have to carry the weight of the walls people furniture appliances and other stuff we place on them.

I joists are used extensively in residential floor and roof framing. One of the benefits of using i joists in residential floor construction is that holes may be cut in the joist webs to accommodate electrical wiring plumbing lines and other mechanical systems therefore minimizing the depth of the floor system. These options include gypsum board installed on top of the bottom flanges gypsum board ceiling membranes gypsum board applied directly to i joist flanges and webs mineral wool insulation and fire protective coatings. Each type of floor joist offers its own unique benefits and drawbacks which is why those working in carpentry all tend to have their own favorite floor joist option though they are still required to be well versed in each type of floor framing.

I joists offer advantages over conventional lumber products providing savings for the builder and better performance and longer lasting endurance than regular lumber. Where joists are supported on walls noggings may be required at the top flange along the wall to support the floor decking and at the bottom flange to support the plasterboard ceiling. Rfpi s are the ideal choice for engineers specifiers and builders who want to provide their customers with high quality floor systems.