c. Compression. Use hammer blows to install compression bridging. Where the bridging is
drilled, it is nailed in place (see Figure 1-23).
Figure 1-23. Installation of cross bridging
PART B - SUBFLOORING
1-12. Plywood Subflooring. After the foundation and basic framework for the floor are completed,
the subtler can be installed. Material for constructing the subfloor can be either 1-inch or 2-inch
material. Plywood is very satisfactory for subflooring because of the large sheets which can be installed
rapidly. The thicknesses required are 1/2-, 5/8-, or 3/4-inch, depending on the joist spacing and the
floor load requirement.
Lay sheets with the face grain at a right angle to the joist when installing plywood.
Lay the sheets so that the joists are placed over the joists.
Arrange plywood so that the joints for the complete floor are staggered (see Figure 1-24).
Glue and nail the plywood in place.