| TABLE 14 |
| PS 1 PLYWOOD
RECOMMENDATIONS FOR UNIFORMLY LOADED HEAVY DUTY FLOORS(a) (Deflection limited
to 1/240 of span.) (Span Ratings apply to APA RATED SHEATHING and APA RATED STURD-I-FLOOR,
respectively, marked PS1.) |
| Uniform Live Load (psf) |
Center-to-Center Support
Spacing (inches) (Nominal 2-Inch-Wide Supports Unless Noted) |
| 12(b) |
16(b) |
20(b) |
24(b) |
32 |
48(c) |
| 50 |
32/16, 16 oc |
32/16, 16 oc |
40/20, 20 oc |
48/24, 48 oc |
48 oc |
48 oc |
| 100 |
32/16, 16 oc |
32/16, 16 oc |
40/20, 20 oc |
48/24, 48 oc |
48 oc |
1-1/2(d) |
| 125 |
32/16,16 oc |
32/16, 16 oc |
40/20, 20 oc |
48/24, 48 oc |
48 oc |
1-3/4(d),2(d) |
| 150 |
32/16, 16 oc |
32/16, 16 oc |
40/20, 20 oc |
48/24, 48 oc |
48 oc |
1-3/4(e),2(d) |
| 200 |
32/16, 16 oc |
40/20, 20 oc |
48/24, 24 oc |
48 oc |
1-1/8(e), 1-3/8(d) |
2(e), 2-1/2(d) |
| 250 |
32/16, 16 oc |
40/20, 24 oc |
48/24, 48 oc |
48 oc |
1-3/8(e), 1-1/2(d) |
2-1/4(e) |
| 300 |
32/16, 16 oc |
48/24, 24 oc |
48 oc |
48 oc |
1-1/2(e), 1-5/8(d) |
2-1/4(e) |
| 350 |
40/20, 20 oc |
48/24, 24 oc |
48 oc |
1-1/8(e), 1-3/8(d) |
1-1/2(e), 2(d) |
|
| 400 |
40/20, 20 oc |
48 oc |
48 oc |
1-1/4(e), 1-3/8(d) |
1-5/8(e),2(d) |
|
| 450 |
40/20, 20 oc |
48 oc |
48 oc |
1-3/8(e), 1-1/2(d) |
2(e), 2-1/4(d) |
|
| 500 |
48/24, 20 oc |
48 oc |
48 oc |
1-1/2(d) |
2(e), 2-1/4(d) |
|
(a) Use Plywood with T&G edges, or provide structural blocking
at panel edges, or install a separate underlayment.
(b) A-C Group 1 sanded plywood panels may be substituted for
span-rated Sturd-I-Floor panels (1/2-inch for 16 oc., 5/8 inch for 20 oc.; 3/4-inch for 24
oc.)
(c) Nominal 4-inch-wide supports.
(d) Group 1 face and back, any species inner plies, sanded or
unsanded, single layer.
(e) All-Group 1 or Structural 1 plywood, sanded or unsanded, single
layer.
| TABLE 15 |
| PS 1 PLYWOOD
RECOMMENDATIONS FOR FLOORS CARRYING FORKTRUCK TRAFFIC(a)(b)(c) (Plywood grade
is all-Group 1 or Structural I A-C or C-C Plugged, except where 2-4-1 (STURD-I-FLOOR 18oc
marked PS 1) IS NOTED). |
| Tire Tread Print
Width (in.) |
Center-to-Center
Support Spacing (in.) (Minimum 3-Inch-Wide Supports) |
| Load per
Wheel (Ibs.) |
12 |
16 |
20 |
24 |
| 3 |
500 |
2-4-1 |
2-4-1 |
2-4-1 |
2-4-1 |
| |
1000 |
1-1/4" |
1-1/4" |
1-1/4" |
1-1/4" |
| |
1500 |
1-1/2" |
1-3/4" |
1-3/4" |
1-3/4" |
| |
200 |
2" |
2" |
2-1/4" |
2-1/4" |
| 5 |
1000 |
2-4-1 |
2-4-1 |
1-1/8" |
1-1/8" |
| |
1500 |
1-1/8" |
1-1/8" |
1-1/4" |
1-1/4" |
| |
2000 |
1-1/4" |
1-1/2" |
1-1/2" |
1-3/4" |
| |
2500 |
1-1/2" |
2" |
2" |
2" |
| |
3000 |
1-3/4" |
2" |
2-1/4" |
2-1/4" |
| 7 |
2000 |
1-1/8" |
1-1/8" |
1-1/4"" |
1-1/4" |
| |
3000 |
1-1/4" |
1-1/2" |
1-1/2 |
1-3/4" |
| |
4000 |
1-63/4" |
1-3/4" |
1-3/4" |
2" |
| |
5000 |
2" |
2" |
2-1/4" |
2-1/2" |
| |
6000 |
2-1/4" |
2-1/2" |
2-3/4" |
3" |
| 9 |
3000 |
1-1/4" |
1-1/4" |
1-1/4" |
1-1/4" |
| |
4000 |
1-1/2" |
1-1/2" |
1-3/4" |
1-3/4" |
| |
5000 |
1-3/4" |
1-3/4" |
2" |
2" |
| |
6000 |
2" |
2" |
2-1/4" |
2-1/4" |
| |
7000 |
2-1/4" |
2-1/4" |
2-3/4" |
2-3/4" |
(a) Structural blocking (3x4 or 2x6 min.) required at all panel
edges. Support blocking with framing anchors of adequate capacity or similar devices.
(b) Provide a wearing surface such as Plyron, polyethylene or a
separate layer of plywood, hardboard or other hard surface when loads are due to caster,
or small, hard wheels. A wearing surface should also be considered for areas where
fork-truck traffic is stopping, starting or turning in a tight radius.
(c) Use ring- or screw-shank nails with length sufficient to
penetrate framing 1-1/2" or panel thickness, whichever is greater. Space nails
maximum 4" o.c. at panel edges and 8" o.c. at intermediate supports. |
