What Is Floor Joist Blocking

They help to stiffen the deck s frame and prevent joists from moving or twisting as the lumber expands and contracts.

What is floor joist blocking.

To carry load bearing walls that stack above walls or beams. Blocking when talking about floor joists is when short wood blocks are used to fill or reinforce floor joists under floors that have a space below them. Floor joist blocking when an improperly designed floor joist is loaded it tries to take the path of least resistance which is to twist to the side. Making professional blocks to make the blocks i cut sections of i joist 1 inches smaller than the space between the joists.

Two common reasons for squash blocks are. Joist blocking blocking provides the floor joists with lateral support and it provides a way to transfer shear and vertical loads from the walls above to the foundation below. Blocking bridging or strapping at 8 ft on center forces the joists to take the path of maximum resistance down making them slightly stiffer. Prolong the health of your framing with joist tape.

Blocking your deck joists blocks cut from the same material as your joists should be installed at regular intervals perpendicular to the length of the joists. So one of the last things that need to be done before sheathing the deck is to fill in with blocking. Tying the joists together with blocking makes the floor even stronger and stiffer. The wood used when blocking is usually made up of short defective pieces of wood that can t be used in other pieces of construction.

Squash blocks are short pieces of lumber or ewp cut 1 16 longer than the depth of the joist their purpose is to transfer vertical loads around the joists to bearing below. Solid wood blocking helps reduce up or down movement and the twisting of joists.