Floor Truss Bridging

U section bridge under hung floor beam generally for shorter spans.

Floor truss bridging. Even if your floor already has a row of bridging running down the center you can stiffen it substantially by adding two more rows. The 2x6 serves the same purpose as bridging in a standard floor distributing concentrated loads over a wider area. Floor joist bridging is critical to the structural strength of a floor as shown in figure 1. Underneath 2x6 strongbacks laid on edge should run continuously through the webs of all the trusses at 10 ft.

Truss two runs for longer trusses. Bottom of the floor joists instead of or in addition to being installed on top. However some people add additional bridging to try and stiffen the floor and provide additional load sharing or to brace the joists per nds 4 4 1. Lay the new sheets perpendicular to the floor joists and orient panel ends over joists.

Ansi tpi 1 2002 includes information in the commentary to section 7 5 2 4 regarding the use of strongback bridging to reduce the effects of differential deflection in floor trusses. Proper bridging distributes the load on the floor to other joists and over time prevents floors from sagging and squeaking do to floor joists twisting and warping. Strongback bridging system dampens floor vibrations. The load sharing element is typically considered to be the floor diaphragm.

Floor truss open concept allow the installation of strongback bridging which actively contribute to reduce floor vibration. Pony or pratt truss bridges are half through truss bridges no overhead members box or full through truss overhead members two types of pony truss configurations. The code does recognize load sharing through the value of cr. If span is greater than 8 install on 2x8 or larger joists.

Support floor joists with a depth to thickness ratio of six or more with bridging at intervals not exceeding 8. Intervals one run for a 20 ft. Bridging allows each joist to share weight with its neighbors and can cut deflection how much the joists flex by half. The catch of course is that the bouncy floor joists must be accessible from below.

If span is greater than 16 use more than one pair. Tension bridging works only in tension so must be used in cross pairs. The addition of this important structural component allow the individual. 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.

Floor truss is designed and produced to your specific needs and delivers reliable performance.