Georgia-Pacific APA Engineered Wood Construction Guide - Floors - Manual (Page 17)

Floor Construction
ENGINEERED WOOD CONSTRUCTION GUIDE ■ FORM NO. E30V ■ © 2011 APA – THE ENGINEERED WOOD ASSOCIATION ■ WWW.APAWOOD.ORG 44
TABLE 18
PS 1 PLYWOOD SPAN RATING OR PERFORMANCE CATEGORY RECOMMENDATIONS FOR FLOORS CARRYING
FORK-TRUCK TRAFFIC
(a)(b)(c) (Plywood grade is all-Group 1 or Structural I A-C or C-C Plugged, except where
1-1/8 STURD-I-FLOOR 48 oc is noted.)
Tire Tread
Print Width
(in.)
Load per
Wheel
(lbs.)
Center-to-Center Support Spacing (in.) (Minimum 3-Inch-Wide Supports)
12 16 19.2 24
3
500
1000
1500
2000 48 oc
1-1/4
1-1/2
2
48 oc
1-1/4
1-3/4
2
48 oc
1-1/4
1-3/4
2-1/4
48 oc
1-1/4
1-3/4
2-1/4
5
1000
1500
2000
2500
3000 48 oc
1-1/8
1-1/4
1-1/2
1-3/4
48 oc
1-1/8
1-1/2
2
2
1-1/8
1-1/4
1-1/2
2
2-1/4
1-1/8
1-1/4
1-3/4
2
2-1/4
7
2000
3000
4000
5000
6000 1-1/8
1-1/4
1-3/4
2
2-1/4
1-1/8
1-1/2
1-3/4
2
2-1/2
1-1/4
1-1/2
1-3/4
2-1/4
2-3/4
1-1/4
1-3/4
2
2-1/2
3
9
3000
4000
5000
6000
7000 1-1/4
1-1/2
1-3/4
2
2-1/4
1-1/4
1-1/2
1-3/4
2
2-1/4
1-1/4
1-3/4
2
2-1/4
2-3/4
1-1/4
1-3/4
2
2-1/4
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 sepa-
rate layer of plywood, hardboard or other hard surface when
loads are due to casters, 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.
TABLE 17
PS 1 PLYWOOD SPAN RATING OR PERFORMANCE CATEGORY RECOMMENDATIONS FOR UNIFORMLY LOADED
HEAVY DUTY FLOORS
(a) (Deflection limited to 1/240 of span.)
Uniform
Live Load
(psf)
Center-to-Center Support Spacing (inches) (Nominal 2-Inch-Wide Supports Unless Noted)
12 (b) 16 (b) 19.2 (b) 24 (b) 32 48 (c)
50 32/16, 16 oc 32/16, 16 oc 40/20, 20 oc 48/24, 24 oc 48 oc 48 oc
100 32/16, 16 oc 32/16, 16 oc 40/20, 20 oc 48/24, 24 oc 48 oc 1-1/2 (d)
125 32/16, 16 oc 32/16, 16 oc 40/20, 20 oc 48/24, 24 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, 48 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, 24 oc 48 oc 48 oc 1-3/8 (e) , 1-1/2 (d) 2 (e) , 2-1/4 (d)
500 48/24, 24 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 Performance Category for
16 oc; 5/8 Performance Category for 20 oc; 3/4 Performance
Category for 24 oc).
(c) Nominal 4-inch-wide supports.
(d) Group 1 face and back, any species inner plies, sanded or
unsanded, single layer. Numbers given are Performance Categories.
(e) All-Group 1 or Structural I plywood, sanded or unsanded, single layer.
Numbers given are Performance Categories.