Floor Joist Bridging Products

To install the type shown here drive the toothed end into the joist and nail the other end.

Floor joist bridging products. If span is greater than 8 install on 2x8 or larger joists. Various types of metal bridging are available at home centers and lumberyards. Simpson strong tie tension bridging galvanized steel the ltb s are used in floor systems to resist the overturning of floor joists and features a staggered nail pattern. Floor joist bridging is critical to the structural strength of a floor as shown in figure 1.

Thd sku 205173. Support floor joists with a depth to thickness ratio of six or more with bridging at intervals not exceeding 8. Size of floor joists 2 10 or 2 12 standard lumber 16 on center 2. The joists shown here for example span 12 ft so we added rows of bridging 4 ft.

Install with two 6d common nails per end. Approximate length of joist span from outside wall to beam 3. 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. Are joists still in good condition 4.

According to the study bridging may be considered necessary for 2x10 and 2x12 dimension lumber joists with clear spans exceeding about 16 feet and 18 feet respectively. Bridging v2018 0br american national standard sji100 2015 table 5 5 1 u s. How many spaces will you install bridging. Customary units number of rows of top chord bridging2 section number1 joist.

These same findings are not proven to apply to other types of floor joists i e i joists steel joists etc or for dimension lumber joists greater than 12 inches in depth. Mike installs galvanized steel briding in between the floor joists on this bedroom addition project in rocky hill ct. If you prefer you can always call me at the office number below we will be happy to discuss your project monday friday 9am. Tension bridging works only in tension so must be used in cross pairs.

Adding two rows of bridging costs a few dollars per joist.