| TABLE 23 |
| RECOMMENDED SHEAR (POUNDS
PER FOOT) FOR APA PANEL SHEAR WALLS WITH FRAMING OF DOUGLAS-FIR, LARCH, OR SOUTHERN PINE(a)
FOR WIND OR SEISMIC LOADING(b) |
Panel
Grade |
Minim-
um Nominal Panel Thickn-
ess (in.) |
Minim-
um
Nail
Penet-
ration
in
Fram
ing(h)
(in.) |
Panels Applied Direct to
Framing |
Panel Applied Over
1/2" or 5/8" Gypsum
Sheathing |
Nail
Size (com-
mon
or galva-
nized
box) |
Nail Spacing at Panel
Edges (in.) |
Nail
Size
(com-
mon
or
galvan
ized
box) |
Nail Spacing
at Panel Edges
(in.) |
| 6 |
4 |
3 |
2(e) |
6 |
4 |
3 |
2(e) |
APA STRUCT-
RUAL
grades |
5/16 |
1-1/4 |
6d |
200 |
300 |
390 |
510 |
8d |
200 |
300 |
390 |
510 |
| 3/8 |
|
|
230(d) |
360(d) |
460(d) |
610(d) |
|
|
|
|
|
| 7/16 |
1-1/2 |
8d |
255(d) |
395(d) |
505(d) |
670(d) |
10d |
280 |
430 |
500(f) |
730 |
| 15/32 |
|
|
280 |
430 |
550 |
730 |
|
|
|
|
|
| 15/32 |
1-5/8 |
10d |
340 |
510 |
665(f) |
870 |
|
- |
- |
- |
- |
APA
RATED SHEATH-
ING
;APA
RATED SIDING(g)
and other
APA
grades
except species Group5
grades |
5/16 or 1/4(c) |
1-1/4 |
6d |
180 |
270 |
350 |
450 |
|
180 |
270 |
350 |
450 |
| 3/8 |
|
|
200) |
300 |
390 |
510 |
8d |
200 |
300 |
390 |
510 |
| 7/16 |
1-1/2 |
8d |
220(d) |
320(d) |
410(d) |
530(d) |
|
|
|
|
|
| 15/32 |
|
|
240(d) |
350(d) |
450(d) |
585(d) |
10d |
260 |
380 |
490(f) |
640 |
| 15/32 |
|
|
360 |
380 |
490 |
640 |
|
|
|
|
|
| 19/32 |
1-5/8 |
10d |
|
460 |
600 |
770 |
|
- |
- |
- |
- |
| |
|
|
|
510 |
600 |
870 |
|
- |
- |
- |
- |
APA
RATED SIDING(g)
and other
APA
grades except species
Group 5 |
5/16(c) |
1-1/4 |
Nail
Size
(galva
nized- casing) 6d |
140 |
210 |
275 |
360 |
Nail Size
(galvan-
ized casing) 8d |
140 |
210 |
275 |
360 |
| 3/8 |
1-1/2 |
8d |
160 |
240 |
310 |
410 |
10d |
160 |
240 |
310(f) |
410 |
(a) For framing of other species: (1) Fins specific gravity
for species of lumber in the AFPA National Design Specification. (2) (a) For common or
galvanized box nails, find shear value from table above for nail size for STRUCTURAL I
panels (regardless of actual grade). (b) for galvanized casing nails, take shear value
directly form table anove.(3) Multiply this value by 0.82 for species with specific
gravity of 0.42 or greater, or 0.65 for all other species. See footnote (h).
(b) All panel edges backed with 2-inch nominal or wider
framing. Install panels either horizontally or vertically. Space nail maximum 6 inches
o.c. along intermediate framing members for 3/8-inch and 7/16-inch panels installed on
studs spaced 24 inches o.c. For other conditions and panels thickness, space nails maximum
12 inches o.c. on intermediate supports. Fasteners shall be located a minimum 3/8 inch
from panels edges.
(c) 3/8-inch or APA RAGED SIDING 16oc is minimum
recommended when applied direct tot framing as exterior siding.
(d) Shears may be increased to values shown for 15/32-inch
sheathing with same nailing provided (1) studs are spaced a maximum of 16 inches o.c., or
(2) if panels are applied with long dimensions across studs.
(e) Framing at adjoining panel edges shall be 3-inch
nominal or wider, and nails shall be staggered where 10d nails having penetration into
framing of more than 1-5/8 inches are spaced 3 inches o.c. Check local code for variations
of these requirements
(g) Values apply it all-veneer plywood APA RATED SIDING
panels only, Other APA RATED SIDING panels may also qualify on a proprietary basis. APA
RATED SIDING 16 oc plywood may be 11/32 inch, 3/8 inch or thicker. Thickness at point of
nailing on panels edges governs shear values.
(h) Contact APA for engineered alternatives.
|
