Figure 2-8. Straightening walls.
building, fastening the line to this post in the same
manner as for the first post. Place a small 3-4-inch
block under each end of the line as shown in figure
2-8 to give clearance. Use enough temporary braces
Figure 2-7. Plumbing posts with a plumb bob.
to hold the wall straight. When the wall is far enough
away from the line to permit a 3/4-inch block to
measure the distance from the post to the center of
barely slide between the line and the plate, the brace
the line at the bottom of the post; if it does not
is then nailed. This procedure is carried out for the
measure 2 inches, the post is not plumb. Move the
entire perimeter of the building. Inside partition
post inward or outward until the distance from the
walls should be straightened in the same manner.
post to the center of the line is exactly 2 inches. Then
nail the temporary brace in place repeat this
2-3.
BRACES
procedure for the other outside face of the post. The
Bracing is used to stiffen framed construction
post is then plumb. This process is carried out for the
and make it rigid. The purpose of bracing may be to
remaining corner posts of the building. If a plumb
resist winds, storm, twist, or strain stemming from
bob or level is not available, a rock, a half brick, or
any cause. Good wall bracing keeps corners square
some small piece of metal may be used instead.
and plumb and prevents warping, sagging, and shifts
(2) To plumb a corner with a
resulting from lateral forces that would otherwise
carpenter's level, place the level against each outer
tend to distort the frame and cause badly fitting doors
face of the post and adjust the post until the level
and cracks in the wallboard. There are four
bubble comes to rest exactly between the two scratch
commonly used methods of bracing the walls of
marks on the level glass.
frame structures:
b. Straightening walls (fig. 2-8). Plumb
a. Let-in bracing (1, fig. 2-9). Let-in
one corner post with the level or plumb bob and nail
bracing is set into the edges of studs to be flush with
temporary braces to hold the post in place (a above).
the surface. The studs are always cut to let in the
Repeat this procedure for all corner posts. Fasten a
braces; the braces are never cut. Usually 1 x 4's or 1
chalk line to the outside of one post at the top and
x 6's are used, set diagonally from top plates to sole
stretch the line to the post at the opposite end of the
plates.
2-5
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