Floor Joist Framing Plan

Tji s offer many benefits compared to traditional dimensional lumber joists including.

Floor joist framing plan.

Almost no twisting or warping very little dimensional shrinkage stiffness and strength. These joists may only be used for roof framing where the roof. Tji s engineered wood i joists are my preferred framing members for floor systems. The exact number of floor joists you ll need will depend on the size of the floor.

The narrow double lines show the floor joist themselves. Some newer homes have manufactured i beam shaped joists. Floor joists are typically 2 by 8s 2 by 10s or 2 by 12s. Ceiling joists are usually 2 by 6s or sometimes 2 by 4s if it is an older home.

A floor s framework is made up mostly of wooden joists that run parallel to one another at regular intervals. Floor joists are supported and held in position over exterior walls by header joists or by solid blocking between the joists. The usual spacing of floor joists is 16 inches oc. Designing the framing system for engineered lumber is a little different from dimensional lumber.

The open joist plan specifications have been prepared by allegheny structural components inc. Engineered lumber continues to become more and more popular in today s construction industry. Look for high low uneven joists using a tight string line. Joists must be level and in plane for a flat surface.

Remove any screws or fasteners that may be protruding from the surface of the joist. Use a water management system such as a drip cap or flashing wherever framing meets the home to move moisture away from the home and deck. Tji floor joist framing. Wooden i joists provide a good balance of strength cost and ease of installation and they are what we are using for the floor joists on the fhb house with lvls for beams and headers.

The outer gray walls are the concrete foundation walls which support the floor joists. The picture below shows a plan view that means looking straight down from above the house. The header joist system is. As a general rule floor joists should be spaced 16 inches 41 cm apart for maximum stability.

To assist design professionals in the preparation of a specification section covering open joist open web wood joists for use in floor framing in residential and commercial projects. Draw and label your framing plan to scale and double check each of your measurements to make sure they suit the structure s size and support requirements.