a. Corner Post. A corner post forms an inside corner and an outside corner, which provides a good nailing base for inside wall coverings. The studs used at the corners of fame construction are usually built up from three or more ordinary studs to provide greater strength. These built-up assemblies are called corner posts. They are set up, plumbed, and temporarily braced. Corner post may also be made in any of the following ways (see Figure 2-12 ).

• A 4 by 6 with a 2 by 4 nailed on the board side flush with one edge (see Figure 2-12 , A). This type of corner is for a 4-inch wall. Where walls are thicker, heavier timber is used.
• A 4 by 4 with a 2 by 4 nailed to each of two adjoining ides (see Figure 2-12 , B).
• Two 2 by 4s nailed together with blocks between them and a 2 by 4 flush with one edge (see Figure 2-12 , C). This is the most common method.
• A 2 by 4 nailed to the edge of another 2 by 4, the edge of one flush with the side of the other (see Figure 2-12 , D). This type is used extensively in the theater of operations, where no inside finish is needed.

b. T-Posts. Whenever a partition meets another wall, a stud wide enough to extend beyond the partition on both sides is used. This provides a solid nailing base for the inside wall finish. This type of stud is called a T-post and is made in any of the following ways (see Figure 2-13 ):

• A 2 by 4 may be nailed and centered on the face side of a 4 by 6 (see Figure 2-13 , A).
• A 2 by 4 may be nailed and centered on two 4 by 4s nailed together (see Figure 2-13 , B).
• Two 2 by 4s may be nailed together with a block between them and a 2 by 4 centered on the wide side (see Figure 2-13 , C).
• A 2 by 4 may be nailed and centered on the face side of a 2 by 6, with a horizontal bridging nailed behind them to give support and stiffness (see Figure 2-13 , D).