Georgia-Pacific APA Engineered Wood Construction Guide - Walls User Manual
Page 5
Wall Construction
ENGINEERED WOOD CONSTRUCTION GUIDE
■
FORM NO. B360P
■
© 2011 APA – THE ENGINEERED WOOD ASSOCIATION
■
WWW.APAWOOD.ORG
46
TABLE 20
APA RATED LAP SIDING APPLIED DIRECT-TO-STUDS OR OVER NONSTRUCTURAL SHEATHING
(a)(b)(c)(d)(e)
Minimum Nail
(f)
Minimum
Performance
Category (in.)
Wall Stud
Spacing
(in. o.c.)
Lap Siding
Width (in.)
Maximum Wind Speed (mph)
Shank Diameter
(in.)
Penetration in
Framing (in.)
Wind Exposure Category
B
C
D
0.113
1.5
3/8
16
6
140
120
110
8
140
120
110
12
120
100
90
7/16
16
6
140
120
110
8
140
120
110
12
120
100
90
7/16
24
6
140
120
110
8
120
100
90
12
90
NP
NP
(a) Table is based on wind pressures acting toward and away from
building surfaces, at 30-ft height in wall Zone 5 (corners) with
smallest effective area, per
and
Stud specific gravity = 0.42.
(b) Recommendations of siding manufacturer may vary.
(c) APA Rated lap siding rated 16 oc and 24 oc shall be used with
a maximum stud spacing of 16" o.c. and 24" o.c., respectively.
(d) Hot-dip galvanized nails are recommended for most siding applica-
Siding Fasteners section of page 48
for more information.
(e) Supported panel joints shall occur approximately along the center-
line of framing with a minimum bearing of 1/2". Fasteners shall
be located 3/8" from panel edges. Siding installed over two or
more spans.
(f) See
Table 5, page 14
, for nail dimensions.
TABLE 21B
APA RATED SIDING (PANEL) APPLIED TO STRUCTURAL SHEATHING
(a)(b)(c)(d)(e)
APA Rated
Panel Siding
Minimum Nail
(f)(g)
Wall Stud
Spacing
(in. o.c.)
Panel Nail Spacing
Maximum Wind Speed (mph)
Shank Diameter
(in.)
Edges
(h)
(in. o.c.)
Intermediate
Supports
(in. o.c.)
Wind Exposure Category
B
C
D
3/8 Performance Category
APA MDO GENERAL
APA Rated Siding
16 oc or 24 oc
0.120 ring shank
16
6
12
110
90
85
6
125
105
90
24
6
12
90
NP
NP
6
110
90
85
(a) Table is based on wind pressures acting toward and away from
building surfaces, at 30-ft height in wall Zone 5 (corners) with
smallest effective area, per
and
Stud specific gravity = 0.42.
(b) Recommendations of siding manufacturer may vary.
(c) For use as wood structural panel wall bracing, the minimum fas-
tener spacing of 6" o.c. at panel edges and 12" o.c. at intermediate
supports shall be sufficient.
(d) Hot-dip galvanized nails are recommended for most siding applica-
Siding Fasteners section on page 48
for more information.
(e) Maximum stud spacing shall be in accordance with Table 21A.
(f) Ring shank nail shall be used.
(g) See
Table 5, page 14
, for nail dimensions.
(h) Supported panel joints shall occur approximately along the center-
line of framing with a minimum bearing of 1/2". Fasteners shall be
located 3/8" from panel edges.
TABLE 21A
MAXIMUM STUD SPACING: APA RATED SIDING (PANEL) APPLIED DIRECT-TO-STUDS OR STRUCTURAL SHEATHING
Siding Description
Minimum Performance
Category or
Span Rating
Maximum Stud Spacing (in.) for Vertical Rows of Nails
Parallel to Supports
Perpendicular to Supports
APA MDO GENERAL
3/8
16
24
15/32
24
24
APA Rated Siding
16 oc
16
16
(a)
24 oc
24
24
(a) Stud spacing may be 24" o.c. for veneer-faced siding panels.