Installation Guide

Floor Construction
ENGINEERED WOOD CONSTRUCTION GUIDE
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FORM NO. E30V
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© 2011 APA – THE ENGINEERED WOOD ASSOCIATION
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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.