How to Guide

Wall Construction
ENGINEERED WOOD CONSTRUCTION GUIDE
■
FORM NO. B360P
■
© 2011 APA – THE ENGINEERED WOOD ASSOCIATION
■
WWW.APAWOOD.ORG
52
Min. 3/8
Performance
Category
APA RATED
SHEATHING
nailed to studs
with 6d common
nails spaced
6" o.c. along panel
edges and 12" o.c.
at intermediate
supports*
*See Table 5 for
nail dimensions
Supports 16"
or 24" o.c.
FIGURE 14
APA PANEL CORNER BRACING
Any wall
sheathing
For additional information on wall bracing,
see Introduction to Wall Bracing, Form F430.
APA RATED
SHEATHING
Brick veneer
or masonry
FIGURE 15
BRICK VENEER OVER APA PANEL SHEATHING
“Weep holes”
in bottom
course
every 24"
Extend flashing up behind
weather-resistive barrier at least 6"
Building paper or other
code-recognized weather-
resistive barrier
required
1" air space
Hold panel edge 1/2"
above base flashing
APA Panel Wall Sheathing
APA RATED SHEATHING meets building code wall sheathing require-
ments for wind pressures and wall bracing. Even when foam or other
nonstructural sheathing is used, APA RATED SHEATHING corner brac-
ing panels (Figure 14) of the same thickness meet code wall bracing
requirements. Installation recommendations are given in Figure 13 and
Table 24.
Recommended wall sheath-
ing spans with brick veneer or
masonry are the same as those
for panel sheathing (see Table
24). See Figure 15 for installa-
tion recommendations.
Panel recommendations for
preframed wall sections are the
same as for built-in-place walls.
Note: To minimize the potential
for panel buckling, gluing of wall
sheathing to framing is not recom-
mended, except when recommended
by the adhesive manufacturer for
wall sheathing that already has been
permanently protected by siding.
1/8" spacing is
recommended
at all edge and
end joints unless
otherwise indicated
by panel
manufacturer
Filler strip
if required
APA RATED
SHEATHING
applied with
strength axis
parallel to
studs
APA RATED
SHEATHING
applied with
strength axis
across studs
(a)
Siding
6" minimum
clearance,
siding to grade
FIGURE 13
APA PANEL WALL SHEATHING
Building paper
or other code-
recognized
weather-
resistive
barrier
(a) Check local building
codes for blocking requirements
between studs for braced or engineered
shear wall segments, when wall sheathing
is installed horizontally across studs.