12 Bridging For Floor

Metal bridging is available at home centers in lengths to fit between joists that are centered 16 in.

12 bridging for floor.

Install with two 6d common nails per end. My house has 2 x 12 12 inch o c floor joists. Figure 1 cross and solid bridging with load on floor. To frame a floor that s 12 feet 3 7 m x 18 feet 5 5 m you would need 4 12 ft 3 7 m sill plate boards 4 18 ft 5 5 m rim joist boards and 9 18 ft 5 5 m main floor joists.

This sample table gives minimum floor joist sizes for joists spaced at 16 inches and 24 inches on center o c for 2 grade lumber with 10 pounds per square foot of dead load and 40 pounds of live load which is typical of normal residential construction. Are joists still in good condition 4. From the foundation wall. Adding two rows of bridging costs a few dollars per joist.

The joists shown here for example span 12 ft so we added rows of bridging 4 ft. From both ends of the span. Joist span and spacing is set by your local building code. Approximate length of joist span from outside wall to beam 3.

If your joists span 12 ft for example place bridging 4 ft. While most residential construction uses 2x8 joists with 16 inch spacing there are many other factors you need to consider when determining the proper joist span length. To install the type shown here drive the toothed end into the joist and nail the other end. If there is no bridging in the center of the span install a row there as well.

I want to bridge around the 7 galvanized ducts. Thd sku 205173. Size of floor joists 2 10 or 2 12 standard lumber 16 on center 2. If you prefer you can always call me at the office number below we will be happy to discuss your project monday friday 9am.

Add a layer of plywood. 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. Various types of metal bridging are available at home centers and lumberyards. As shown in figure 2 it is not unusual especially in new homes to find that the cross bridging has not been nailed to the bottom of the floor joists.

How many spaces will you install bridging. True floor joist span calculations can only be made by a structural engineer or contractor. Bridging is removed to allow for the installation of duct work as shown in figure 3. Figure 2 incorrect installation of cross bridging.

At most home improvement centers you can also have your lumber cut to the desired specifications when you order it.