Floor Joist Blocking And Bridging

Pre punched holes in the connection legs are added for quick attachment to each floor joist.

Floor joist blocking and bridging. Nail bridging on all joists. Tradeready blocking is pre cut and formed to fit securely between the floor joists to prevent joist rotation. If the china cabinet in the next room rattles as you walk across the floor try stiffening that floor fast with inexpensive metal braces called bridging bridging allows each joist to share weight with its neighbors and can cut deflection how much the joists flex by half. Yet it is not uncommon to find bridging not properly installed or missing all together.

Floor joist bridging vs blocking i like laying 1 1 8 super flat easy to pound t g together dropping a 2x6 from a floor above doesn t put a hole in it. Blocking is also needed each time the joist overlaps with a center beam and every eight feet between two joists. Section r502 7 of the 2009 international residential code specifies that joists must be laterally supported by solid blocking that s not less than 2 inches thick and the full depth of the joist. I ve always used a lift for upper floors though.

Pre cut to fit 12 16 or 24 joist spacing. Structural blocking is an economical alternative to tension bracing cdtb or flat strapping. Floor joist bridging is critical to the structural strength of a floor as shown in figure 1. Use metal bridging instead of wood blocking if you wish.

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.