Grating Pacific
Home About Us Products & Services Search Contact Us


Heavy Duty Grating
More related links...

Table of Spacings Available

Bearing Bar Selection

Cross Bar Section

Banding

Serrated Surface

Load Table: TYPE W-15-4

Load Table: TYPE W-19-4

Load Table: TYPE W-22-4

Load Table: TYPE W-30-4

Load Table: TYPE W-38-4

W.gif (983 bytes)elded Heavy-Duty products are designed to meet the need for gratings subject to heavy duty rolling and static loads such as highways, plant floors, loading docks, inlet covers and airports.  Since these conditions can range from light-duty forklifts to semi-trucks and trailers carrying maximum allowable highway loads, heavy duty gratings are manufactured in a wide variety of bar sizes and spacings.
     GPI Heavy-Duty products are designed in accordance with current AASHTO specifications for H-10 through H-20 loads.  Automobile and forklift loads are similarly evaluated with loads calculated and distributed in accordance with the criteria shown below.  If your particular load conditions are not adequately addressed in the load criteria presented, please contact our engineering staff and we will be pleased to assist in the selection of a heavy-duty grating to satisfy your specific needs.

blackdot.gif (807 bytes)
blackdot.gif (807 bytes)

GP10heavyduty1a.gif (2510 bytes)

 blackdot.gif (807 bytes)

GP10heavyduty1b.gif (2375 bytes)

 blackdot.gif (807 bytes)
STANDARD
CROSS BARS		 Optional:
RECTANGULAR
CROSS BARS
blackdot.gif (807 bytes)

 

TABLE OF SPACINGS AVAILABLE
TYPE W-15-4

GP10heavyduty2a.gif (685 bytes)
Bearing Bars at 15/16" O.C. - Cross Bars at 4" O.C.
TYPE W-15-2

GP10heavyduty3a.gif (801 bytes)
Bearing Bars at 15/16" O.C. - Cross Bars at 2" O.C.
TYPE W-19-4

GP10heavyduty2b.gif (683 bytes)
Bearing Bars at 1-3/16" O.C. - Cross Bars at 4" O.C.
TYPE W-19-2

GP10heavyduty3b.gif (881 bytes)
Bearing Bars at 1-3/16" O.C. - Cross Bars at 2" O.C.
TYPE W-22-4

GP10heavyduty2c.gif (839 bytes)
Bearing Bars at 1-3/8" O.C. - Cross Bars at 4" O.C.
TYPE W-22-2

GP10heavyduty3c.gif (907 bytes)
Bearing Bars at 1-3/8" O.C. - Cross Bars at 2" O.C.
TYPE W-30-4

GP10heavyduty2d.gif (724 bytes)
Bearing Bars at 1-7/8" O.C. - Cross Bars at 4" O.C.
TYPE W-30-2

GP10heavyduty3d.gif (830 bytes)
Bearing Bars at 1-7/8" O.C. - Cross Bars at 2" O.C.
TYPE W-38-4

GP10heavyduty2e.gif (775 bytes)
Bearing Bars at 2-3/8" O.C. - Cross Bars at 4" O.C.
TYPE W-38-2

GP10heavyduty3e.gif (894 bytes)
Bearing Bars at 2-3/8" O.C. - Cross Bars at 2" O.C.

 

 

blackdot.gif (807 bytes)
BEARING BAR SELECTION

Once the bar spacing is selected, the bearing bar size must be specified based upon the anticipated load and the clear (unsupported) span to be served.  The Heavy Duty Grating Load Tables provide the maximum safe clear simple span for our most popular products based on the maximum traffic conditions defined.  These tables incorporate strict limitations where design deflection shall not exceed the lesser of L/400 of the safe span indicated or 1/8 of one inch (.125).


     

MAXIMUM TRAFFIC CONDITIONS WHEEL LOAD
(LBS.)
(1/2 OF AXLE
LOAD + 30%
IMPACT)		 LOAD DISTRIBUTION
PARALLEL
WITH AXLE		 PERPENDICULAR
TO AXLE
GPtraffictruck1.gif (307 bytes) Truck Traffic
32,000 Lb. Axle Load
Dual Wheels
Modified AASHTO H-20
20,800 2 (C) + 20"
*		 20"
GPtraffictruck2.gif (290 bytes) Truck Traffic
24,000 Lb. Axle Load
Dual Wheels
AASHTO H-15
10,400 2 (C) + 10"
*		 10"
GPtraffictruck3.gif (208 bytes) Truck Traffic
16,000 Lb. Axle Load
Single Wheels
AASHTO H-10
15,600 2 (C) + 15"
*		 15"
GPtraffictruckcar4.gif (221 bytes) Automobile Traffic
5,000 Lb. Vehicle
1,200 Lb. Load
55% Drive Axle Load
2,220 2 (C) + 8"
*		 8"
GPtraffictrucklift5.gif (238 bytes) 10,000 Lb. Cap Lift Truck
14,400 Lb. Vehicle
24,400 Lb. Total Load
85% Drive Axle Load
13,480 2 (C) + 11"
*		 11"
GPtraffictrucklift6.gif (229 bytes) 6,000 Lb. Cap. Lift Truck
9,800 Lb. Vehicle
15,800 Lb. Total Load
85% Drive Axle Load
8,730 2 (C) + 7"
*		 7"
GPtraffictrucklift7.gif (213 bytes) 2,000 Lb. Cap. Lift Truck
4,200 Lb. Vehicle
6,200 Lb. Total Load
85% Drive Axle Load
3,425 2 (C) + 4"
*		 4"
*C= CENTER TO CENTER SPACING ALLOWABLE STRESS   -   20,000 PSI
OF BEARING BARS MODULUS OF ELASTICITY  -  29,000,000 PSI

 

blackdot.gif (807 bytes)
CROSS BAR SELECTION
While bearing bar selection is critical for specifying a proper heavy-duty grating for your application, the life-cycle of your installation will often be influenced by selection of the appropriate cross bar.  The table below details alternative cross bar sizes available.  The sizes listed for Standard Loads are the standard twisted square or round cross bars supplied by Grating Pacific for a particular bearing bar size.  These sizes have been selected to maximize manufacturing efficiency and economy. It is suggested that these sizes be specified when the grating is subject to intermittent traffic and only occasional full capacity loading.
The cross bars listed for Severe Loading are optional and will provide superior rigidity and durability when gratings are subjected to intense, continuous or repetitious traffic.  Ideal for trench covers, highways and inlet grates, these cross bars enhance lateral stiffness thereby extending the service life of the grating.  When specifying gratings with bearing bars centered at 1-3/8", 1-7/8" or 2-3/8", consideration of Severe Loading cross bars is highly recommended.

 

NOTE: IN THE EVENT THAT A CROSS BAR SIZE IS NOT SPECIFIED, THE CROSS BAR SHALL BE SELECTED AT THE DISCRETION OF THE MANUFACTURER.

 

  CROSS BAR SELECTION TABLE
BEARING BAR SIZE BB CENTERS 15/16", 1-3/16" and 1-3/8" BB CENTERS 1-7/8" and 2-3/8"
THICKNESS DEPTH STANDARD LOADS SEVERE LOADS STANDARD LOADS SEVERE LOADS
1/4"
5/16"
3/8"
1/4"
5/16" - 1/2"
1/4"
5/16" - 1/2"		 1" - 2-1/2"
1" - 2-1/2"
1" - 2-1/2"
3" - 5"
3" - 5"
5-1/2" - 7"
5-1/2" - 7"		 5/16" Twisted
5/16" Twisted
5/16" Twisted
5/16" Twisted
3/8" Round
3/8" Round
3/8" Round		 5/16" Twisted
5/16" Twisted
5/16" Twisted
1 x 1/4
1 x 3/8
1-1/4 x 1/4
1-1/4 x 3/8		 5/16" Twisted
5/16" Twisted
5/16" Twisted
3/8" Round
7/16" Round
7/16" Round
7/16" Round		 5/16" Twisted
5/16" Twisted
5/16" Twisted
1 x 1/4
1 x 3/8
1-1/4 x 1/4
1-1/4 x 3/8
THE SIZES SHOWN ABOVE ARE LISTED AS MINIMUMS, TWISTED AND ROUND CROSS BARS ARE TYPICALLY INTERCHANGEABLE AND, UNLESS OTHERWISE SPECIFIED, MAY BE SUBSTITUTED AT THE DISCRETION OF THE MANUFACTURER.   IN SUBSTITUTION, THE CROSS SECTIONAL AREA OF THE ALTERNATIVE CROSS BAR SHALL EQUAL OR EXCEED THAT OF THE MINIMUM SIZE LISTED ABOVE.
blackdot.gif (807 bytes)
BANDING

Because heavy-duty gratings are commonly subjected to shock and impact loads it is highly recommended that all open ends be banded.  The welded band bar helps distribute impact loads and minimizes panel distortion when subjected to repetitious traffic patterns.  Banding details can be found if you click here.

      

blackdot.gif (807 bytes)
SERRATED SURFACE
  Optional serrated bearing bars can be specified to enhance skid resistance.  To maximize skid resistance, specify 100% Serrated grating.  This heavy-duty grating is manufactured with serrated bearing bars and serrated rectangular cross bars.

 

  HOW TO SPECIFY HEAVY DUTY GRATING
     Heavy-Duty Welded Steel Grating shall be as manufactured by Grating Pacific, 3651 Sausalito Street, Los Alamitos, CA 90720, (800) 321-4314.  Grating shall be type          W-22-4            with          3-1/2" X 3/8"     bearing bars spaced at      4         inches on the center.  Weight per square foot        42.3      lbs.   Heavy-Duty Grating shall be capable of carrying a    H-20  load on a    4'-10"   clear span.  Open ends of grating shall be banded.  Heavy-Duty Grating shall be    GALVANIZED  after fabrication.

 

LOAD TABLE: TYPE W-15-4

BEARING BARS 15/16" ON CENTER, CROSS BARS 4" ON CENTER (2" ON CENTER CROSS BARS ALSO AVAILABLE)
GPtraffictruck1.gif (307 bytes) GPtraffictruck2.gif (290 bytes) GPtraffictruck3.gif (208 bytes) GPtraffictruckcar4.gif (221 bytes) GPtraffictrucklift5.gif (238 bytes) GPtraffictrucklift6.gif (229 bytes) GPtraffictrucklift7.gif (213 bytes)
H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT 1 TON FORKLIFT
BEARING
BAR SIZE		 WEIGHT LBS.
PER SQ. FT.		 SECTION
MOD.
PER FT. OF WIDTH		 CROSS BAR
SIZE		 H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT

1 TON FORKLIFT
MAXIMUM SAFE SPAN

1 x 1/4
1 x 5/16
1 x 3/8
1-1/4 x 1/4
1-1/4 x 5/16
1-1/4 x 3/8
1-1/2 x 1/4
1-1/2 x 5/16
1-1/2 x 3/8
1-3/4 x 1/4
1-3/4 x 5/16
1-3/4 x 3/8
2 x 1/4
2 x 5/16
2 x 3/8
2-1/4 x 1/4
2-1/4 x 5/16
2-1/4 x 3/8
2-1/2 x 1/4
2-1/2 x 5/16
2-1/2 x 3/8
3 x 1/4
3 x 5/16
3 x 3/8
3-1/2 x 1/4
3-1/2 x 5/16
3-1/2 x 3/8
4 x 1/4
4 x 5/16
4 x 3/8

 12.4
15.2
18.1
15.3
18.5
22.3
18.1
22.4
26.6
21.0
25.9
30.9
23.8
29.5
35.1
26.7
33.0
39.4
29.5
36.6
43.7
35.2
43.9
52.3
40.9
51.0
60.8
46.7
58.1
69.4		 0.533
0.667
0.800
0.833
1.042
1.250
1.200
1.500
1.800
1.633
2.042
2.450
2.133
2.667
3.200
2.700
3.375
4.050
3.333
4.167
5.000
4.800
6.000
7.200
6.533
8.167
9.800
8.533
10.667
12.800		 SEE

CROSS

BAR

SELECTION

TABLE

 

 

 1'-1"
1'-2"
1'-3"
1'-3"
1'-5"
1'-6"
1'-6"
1'-8"
1'-10"
1'-9"
2'-0"
2'-3"
2'-0"
2'-4"
2'-8"
2'-4"
2'-9"
3'-2"
2'-9"
3'-3"
3'-9"
3'-7"
4'-4"
4'-7"
4'-7"
5'-1"
5'-4"
5'-4"
5'-9"
6'-2"		 0'-11"
1'-0"
1'-1"
1'-1"
1'-3"
1'-4"
1'-4"
1'-6"
1'-8"
1'-7"
1'-10"
2'-1"
1'-10"
2'-2"
2'-6"
2'-2"
2'-7"
3'-0"
2'-7"
3'-1"
3'-7"
3'-6"
4'-2"
4'-8"
4'-6"
5'-1"
5'-5"
5'-5"
5'-10"
6'-2"		 0'-9"
0'-10"
0'-11"
0'-11"
1'-0"
1'-2"
1'-2"
1'-4"
1'-6"
1'-5"
1'-8"
1'-11"
1'-9"
2'-1"
2'-5"
2'-1"
2'-6"
2'-11"
2'-6"
3'-0"
3'-7"
3'-5"
4'-2"
4'-8"
4'-6"
5'-2"
5'-6"
5'-5"
5'-11"
6'-3"		 1'-7"
1'-10"
1'-11"
2'-2"
2'-5"
2'-8"
2'-10"
3'-2"
3'-6"
3'-7"
4'-0"
4'-3"
4'-3"
4'-7"
4'-11"
4'-10"
5'-2"
5'-6"
5'-4"
5'-9"
6'-2"
6'-5"
6'-11"
7'-4"
7'-6"
8'-1"
8'-7"
8'-7"
9'-3"
9'-8"		 0'-8"
0'-9"
0'-10"
0'-10"
1'-0"
1'-1"
1'-1"
1'-3"
1'-4"
1'-3"
1'-6"
1'-9"
1'-7"
1'-10"
2'-1"
1'-10"
2'-2"
2'-7"
2'-2"
2'-8"
3'-1"
3'-0"
3'-7"
4'-3"
3'-11"
4'-9"
5'-2"
4'-11"
5'-6"
5'-11"		 0'-7"
0'-8"
0'-8"
0'-9"
0'-10"
0'-11"
0'-11"
1'-1"
1'-3"
1'-2"
1'-5"
1'-8"
1'-5"
1'-9"
2'-1"
1'-9"
2'-2"
2'-6"
2'-2"
2'-7"
3'-1"
3'-0"
3'-8"
4'-4"
3'-11"
4'-10"
5'-3"
5'-1"
5'-8"
6'-0"		 0'-8"
0'-9"
0'-11"
0'-11"
1'-1"
1'-4"
1'-3"
1'-7"
1'-10"
1'-8"
2'-1"
2'-6"
2'-2"
2'-8"
3'-2"
2'-8"
3'-4"
4'-0"
3'-4"
4'-1"
4'-5"
4'-8"
5'-0"
5'-4"
5'-5"
5'-10"
6'-3"
6'-3"
6'-9"
7'-2"

 

 

  LOAD TABLE: TYPE W-19-4

BEARING BARS 1-3/16" ON CENTER, CROSS BARS 4" ON CENTER (2" ON CENTER CROSS BARS ALSO AVAILABLE)
GPtraffictruck1.gif (307 bytes) GPtraffictruck2.gif (290 bytes) GPtraffictruck3.gif (208 bytes) GPtraffictruckcar4.gif (221 bytes) GPtraffictrucklift5.gif (238 bytes) GPtraffictrucklift6.gif (229 bytes) GPtraffictrucklift7.gif (213 bytes)
H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT 1 TON FORKLIFT
BEARING
BAR SIZE		 WEIGHT LBS.
PER SQ. FT.		 SECTION
MOD.
PER FT. OF WIDTH		 CROSS BAR
SIZE		 H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT

1 TON FORKLIFT
MAXIMUM SAFE SPAN

1 x 1/4
1 x 5/16
1 x 3/8
1-1/4 x 1/4
1-1/4 x 5/16
1-1/4 x 3/8
1-1/2 x 1/4
1-1/2 x 5/16
1-1/2 x 3/8
1-3/4 x 1/4
1-3/4 x 5/16
1-3/4 x 3/8
2 x 1/4
2 x 5/16
2 x 3/8
2-1/4 x 1/4
2-1/4 x 5/16
2-1/4 x 3/8
2-1/2 x 1/4
2-1/2 x 5/16
2-1/2 x 3/8
3 x 1/4
3 x 5/16
3 x 3/8
3-1/2 x 1/4
3-1/2 x 5/16
3-1/2 x 3/8
4 x 1/4
4 x 5/16
4 x 3/8
5 x 1/4
5 x 3/8
5 x 1/2
6 x 1/4
6 x 3/8
6 x 1/2
7 x 1/4
7 x 3/8
7 x 1/2

 10.1
12.3
14.6
12.3
15.1
17.9
14.6
18.0
21.3
16.9
20.8
24.7
19.1
23.6
28.2
21.4
26.5
31.5
23.7
29.3
34.9
28.2
35.1
41.8
32.8
40.7
48.6
37.3
46.4
55.4
46.4
68.9
91.3
55.6
82.5
109.3
64.6
96.0
127.3		 0.421
0.526
0.632
0.658
0.822
0.987
0.947
1.184
1.421
1.289
1.612
1.934
1.684
2.105
2.526
2.131
2.664
3.197
2.631
3.289
3.947
3.789
4.736
5.684
5.157
6.447
7.736
6.736
8.420
11.104
10.525
15.788
21.050
15.156
22.734
30.312
20.629
30.944
41.258		 SEE

CROSS

BAR

SELECTION

TABLE

 

 

 1'-1"
1'-1"
1'-2"
1'-2"
1'-3"
1'-5"
1'-4"
1'-6"
1'-8"
1'-7"
1'-9"
1'-11"
1'-10"
2'-1"
2'-4"
2'-1"
2'-5"
2'-8"
2'-4"
2'-9"
3'-2"
3'-1"
3'-7"
4'-2"
3'-10"
4'-8"
5'-0"
4'-10"
5'-5"
5'-9"
6'-3"
7'-1"
7'-10"
7'-6"
8'-6"
9'-5"
8'-8"
9'-11"
10'-11"		 0'-10"
0'-11"
1'-0"
1'-0"
1'-1"
1'-2"
1'-2"
1'-4"
1'-6"
1'-5"
1'-7"
1'-9"
1'-8"
1'-11"
2'-2"
1'-11"
2'-3"
2'-7"
2'-3"
2'-7"
3'-0"
2'-11"
3'-6"
4'-1"
3'-9"
4'-7"
5'-0"
4'-9"
5'-5"
5'-9"
6'-3"
7'-2"
7'-11"
7'-6"
8'-7"
9'-6"
8'-9"
10'-0"
11'-1"		 0'-8"
0'-9"
0'-10"
0'-10"
1'-11"
1'-0"
1'-0"
1'-2"
1'-4"
1'-3"
1'-5"
1'-8"
1'-6"
1'-9"
2'-1"
1'-9"
2'-2"
2'-6"
2'-1"
2'-7"
3'-0"
2'-11"
3'-6"
4'-2"
3'-9"
4'-8"
5'-1"
4'-8"
5'-6"
5'-10"
6'-5"
7'-4"
8'-1"
7'-8"
8'-9"
9'-8"
8'-11"
10'-3"
11'-3"		 1'-5"
1'-7"
1'-9"
2'-0"
2'-3"
2'-5"
2'-7"
2'-11"
3'-2"
3'-3"
3'-8"
4'-0"
4'-0"
4'-4"
4'-7"
4'-6"
4'-11"
5'-2"
5'-0"
5'-5"
5'-9"
6'-0"
6'-6"
6'-11"
7'-1"
7'-7"
8'-1"
8'-1"
8'-8"
9'-5"
10'-1"
11'-7"
12'-9"
12'-1"
13'-10"
15'-3"
14'-2"
16'-2"
17'-10"		 0'-8"
0'-8"
0'-9"
0'-9"
1'-10"
1'-0"
0'-11"
1'-1"
1'-2"
1'-2"
1'-4"
1'-6"
1'-4"
1'-7"
1'-10"
1'-7"
1'-11"
2'-2"
1'-10"
2'-3"
2'-7"
2'-6"
3'-0"
3'-7"
3'-3"
4'-0"
4'-8"
4'-2"
5'-1"
5'-6"
6'-0"
6'-11"
7'-7"
7'-3"
8'-3"
9'-1"
9'-5"
9'-8"
10'-7"		 0'-6"
0'-7"
0'-8"
0'-8"
0'-9"
0'-10"
0'-10"
0'-11"
1'-1"
1'-0"
1'-3"
1'-5"
1'-3"
1'-6"
1'-7"
1'-6"
1'-10"
2'-2"
1'-10"
2'-3"
2'-7"
2'-6"
3'-1"
3'-8"
3'-4"
4'-1"
4'-10"
4'-3"
5'-3"
5'-8"
6'-2"
7'-1"
7'-9"
7'-5"
8'-6"
9'-4"
8'-8"
9'-11"
10'-11"		 0'-7"
0'-8"
0'-9"
0'-10"
1'-0"
1'-2"
1'-1"
1'-4"
1'-7"
1'-6"
1'-10"
2'-2"
1'-10"
2'-4"
2'-9"
2'-4"
2'-11"
3'-5"
2'-10"
3'-6"
4'-2"
4'-1"
4'-9"
5'-1"
5'-2"
5'-7"
5'-11"
5'-11"
6'-5"
6'-9"
7'-5"
8'-6"
9'-4"
8'-11"
10'-2"
11'-3"
10'-5"
11'-11"
13'-1"

 

 

 LOAD TABLE: TYPE W-22-4

BEARING BARS 1-3/8" ON CENTER, CROSS BARS 4" ON CENTER (2" ON CENTER CROSS BARS ALSO AVAILABLE)
GPtraffictruck1.gif (307 bytes) GPtraffictruck2.gif (290 bytes) GPtraffictruck3.gif (208 bytes) GPtraffictruckcar4.gif (221 bytes) GPtraffictrucklift5.gif (238 bytes) GPtraffictrucklift6.gif (229 bytes) GPtraffictrucklift7.gif (213 bytes)
H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT 1 TON FORKLIFT
BEARING
BAR SIZE		 WEIGHT LBS.
PER SQ. FT.		 SECTION
MOD.
PER FT. OF WIDTH		 CROSS BAR
SIZE		 H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT

1 TON FORKLIFT
MAXIMUM SAFE SPAN

1 x 1/4
1 x 5/16
1 x 3/8
1-1/4 x 1/4
1-1/4 x 5/16
1-1/4 x 3/8
1-1/2 x 1/4
1-1/2 x 5/16
1-1/2 x 3/8
1-3/4 x 1/4
1-3/4 x 5/16
1-3/4 x 3/8
2 x 1/4
2 x 5/16
2 x 3/8
2-1/4 x 1/4
2-1/4 x 5/16
2-1/4 x 3/8
2-1/2 x 1/4
2-1/2 x 5/16
2-1/2 x 3/8
3 x 1/4
3 x 5/16
3 x 3/8
3-1/2 x 1/4
3-1/2 x 5/16
3-1/2 x 3/8
4 x 1/4
4 x 5/16
4 x 3/8
5 x 1/4
5 x 3/8
5 x 1/2
6 x 1/4
6 x 3/8
6 x 1/2
7 x 1/4
7 x 3/8
7 x 1/2

 8.9
10.8
12.8
10.8
13.3
15.7
12.8
15.7
18.7
14.8
18.2
21.6
16.7
20.6
24.5
18.7
23.1
27.5
20.7
25.6
30.4
24.6
30.6
36.4
28.6
35.5
42.3
32.5
40.4
48.2
40.4
60.0
79.3
48.4
71.8
95.0
56.3
83.5
110.6		 0.364
0.455
0.545
0.568
0.710
0.852
0.818
1.023
1.227
1.114
1.392
1.670
1.455
1.818
2.182
1.841
2.301
2.761
2.273
2.841
3.409
3.273
4.091
4.909
4.455
5.568
6.682
5.818
7.273
8.727
9.091
13.636
18.182
13.091
19.636
26.182
17.818
26.727
36.636		 SEE

CROSS

BAR

SELECTION

TABLE

 

 

 1'-0"
1'-1"
1'-1"
1'-2"
1'-3"
1'-4"
1'-3"
1'-5"
1'-6"
1'-6"
1'-8"
1'-10"
1'-8"
1'-11"
2'-1"
1'-11"
2'-2"
2'-6"
2'-2"
2'-6"
2'-10"
2'-9"
3'-3"
3'-9"
3'-6"
4'-2"
4'-10"
4'-4"
5'-2"
5'-6"
6'-0"
6'-10"
7'-6"
7'-2"
8'-2"
9'-0"
9'-4"
9'-6"
10'-6"		 0'-10"
0'-10"
0'-11"
0'-11"
1'-0"
1'-1"
1'-1"
1'-3"
1'-4"
1'-3"
1'-6"
1'-8"
1'-6"
1'-9"
2'-0"
1'-9"
2'-0"
2'-4"
2'-0"
2'-5"
2'-9"
2'-8"
3'-2"
3'-8"
3'-5"
4'-1"
4'-10"
4'-3"
5'-2"
5'-6"
6'-0"
6'-11"
7'-7"
7'-3"
8'-3"
9'-1"
9'-5"
9'-8"
10'-7"		 0'-7"
0'-8"
0'-9"
0'-9"
1'-10"
1'-0"
0'-11"
1'-1"
1'-3"
1'-2"
1'-4"
1'-6"
1'-4"
1'-7"
1'-10"
1'-8"
1'-11"
2'-3"
1'-11"
2'-4"
2'-8"
2'-7"
3'-2"
3'-9"
3'-5"
4'-2"
4'-11"
4'-4"
5'-4"
5'-8"
6'-2"
7'-0"
7'-9"
7'-5"
8'-5"
9'-4"
9'-7"
9'-10"
10'-10"		 1'-3"
1'-6"
1'-8"
1'-10"
2'-1"
2'-3"
2'-5"
2'-9"
3'-0"
3'-1"
3'-5"
3'-9"
3'-11"
4'-2"
4'-5"
4'-4"
4'-8"
5'-0"
4'-10"
5'-3"
5'-7"
5'-10"
6'-3"
6'-8"
6'-10"
7'-4"
7'-9"
7'-9"
8'-4"
8'-11"
9'-9"
11'-2"
12'-3"
11'-8"
13'-4"
14'-8"
13'-7"
15'-7"
17'-2"		 0'-7"
0'-8"
0'-9"
0'-9"
0'-10"
0'-11"
0'-11"
1'-0"
1'-1"
1'-1"
1'-3"
1'-4"
1'-3"
1'-5"
1'-8"
1'-6"
1'-9"
2'-0"
1'-8"
2'-0"
2'-4"
2'-3"
2'-9"
3'-2"
2'-11"
3'-9"
4'-2"
3'-9"
4'-6"
5'-4"
5'-7"
6'-7"
7'-3"
6'-11"
7'-11"
8'-9"
8'-1"
9'-3"
10'-2"		 0'-6"
0'-6"
0'-7"
0'-7"
0'-8"
0'-9"
0'-9"
0'-11"
1'-0"
0'-11"
1'-1"
1'-3"
1'-2"
1'-5"
1'-7"
1'-5"
1'-8"
2'-0"
1'-8"
2'-0"
2'-4"
2'-3"
2'-9"
3'-4"
3'-0"
3'-8"
4'-5"
3'-10"
4'-9"
5'-5"
5'-11"
6'-10"
7'-6"
7'-2"
8'-2"
9'-0"
8'-4"
9'-7"
10'-6"		 0'-6"
0'-7"
0'-9"
0'-9"
0'-11"
1'-1"
1'-0"
1'-3"
1'-6"
1'-4"
1'-8"
1'-11"
1'-9"
2'-1"
2'-6"
2'-2"
2'-8"
3'-2"
2'-7"
3'-3"
3'-10"
3'-9"
4'-7"
4'-11"
5'-0"
5'-5"
5'-9"
5'-9"
6'-2"
6'-7"
7'-2"
8'-3"
9'-1"
8'-8"
9'-11"
10'-11"
10'-1"
11'-8"
12'-8"

 

 

  LOAD TABLE: TYPE W-30-4

BEARING BARS 1-7/8" ON CENTER, CROSS BARS 4" ON CENTER (2" ON CENTER CROSS BARS ALSO AVAILABLE)
GPtraffictruck1.gif (307 bytes) GPtraffictruck2.gif (290 bytes) GPtraffictruck3.gif (208 bytes) GPtraffictruckcar4.gif (221 bytes) GPtraffictrucklift5.gif (238 bytes) GPtraffictrucklift6.gif (229 bytes) GPtraffictrucklift7.gif (213 bytes)
H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT 1 TON FORKLIFT
BEARING
BAR SIZE		 WEIGHT LBS.
PER SQ. FT.		 SECTION
MOD.
PER FT. OF WIDTH		 CROSS BAR
SIZE		 H-20 TRUCK H-15 TRUCK H-10 TRUCK AUTO TRAFFIC 5 TON FORKLIFT 3 TON FORKLIFT

1 TON FORKLIFT
MAXIMUM SAFE SPAN

1 x 1/4
1 x 5/16
1 x 3/8
1-1/4 x 1/4
1-1/4 x 5/16
1-1/4 x 3/8
1-1/2 x 1/4
1-1/2 x 5/16
1-1/2 x 3/8
1-3/4 x 1/4
1-3/4 x 5/16
1-3/4 x 3/8
2 x 1/4
2 x 5/16
2 x 3/8
2-1/4 x 1/4
2-1/4 x 5/16
2-1/4 x 3/8
2-1/2 x 1/4
2-1/2 x 5/16
2-1/2 x 3/8
3 x 1/4
3 x 5/16
3 x 3/8
3-1/2 x 1/4
3-1/2 x 5/16
3-1/2 x 3/8
4 x 1/4
4 x 5/16
4 x 3/8
5 x 1/4
5 x 3/8
5 x 1/2
6 x 1/4
6 x 3/8
6 x 1/2
7 x 1/4
7 x 3/8
7 x 1/2

 6.8
8.3
9.7
8.3
10.1
11.9
9.8
12.0
14.1
11.2
13.8
16.3
12.7
15.6
18.5
14.2
17.4
20.7
15.6
19.3
22.9
18.7
23.4
27.8
21.6
27.1
32.2
24.5