.
.
Heavy Duty Grating
.
Maximum Traffic
Conditions
Wheel Load
(lbs)
Load Distribution
(1/2 axle load +
30% impact)
Parallel
with Axle
Perpendicular
to Axle
26,000
2 (C)*+ 25"
25"
20,800
2 (C)*+ 20"
20"
15,600
2 (C)*+ 15"
15"
3,861
2 (C)*+ 9"
9"
13,480
2 (C)*+11"
11"
3 Ton 6,000 lb. Cap. Lift Truck
lb. Vehicle
Forklift 9,800
15,800 lb. Total Load
8,730
2 (C)*+7"
7"
1 Ton 2,000 lb. Cap. Lift Truck
lb. Vehicle
Forklift 4,200
6,200 lb. Total Load
3,425
2 (C)*+4"
4"
H-25 Truck Traffic
40,000 lb. Axle Load
Dual Wheels
Modified AASHTO H-25
H-20 Truck Traffic
32,000 lb. Axle Load
Dual Wheels
Modified AASHTO H-20
Traffic
H-15 Truck
24,000 lb. Axle Load
Dual Wheels
Modified AASHTO
H-15
Automobile Automobile Traffic
6,322 lb. Vehicle
3,578 lb. Load
60% Drive Axle Load
5 Ton 10,000 lb. Cap. Lift Truck
lb. Vehicle
Forklift 14,400
24,400 lb. Total Load
85% Drive Axle Load
85% Drive Axle Load
85% Drive Axle Load
*C = Center-to-center spacing of bearing bars.
Allowable stress
– 20,000 psi
Modulus of elasticity – 29,000,000 psi