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Molded High Load Capacity (HLC) grating is yet another product in the arsenal of engineered fiberglass reinforced plastic (FRP) solutions by Fibergrate. While capitalizing on most of the traditional benefits of molded grating products - high strength, corrosion resistance, fire retardancy. nonconductivity and low maintenance - this specially manufactured molded FRP product has been engineered to carry the forklift loads that traditional molded FRP grating products are unable to support.

With a 48% open surface area. Fibergrate’s molded HLC grating is available in a 6" x 4" panel with depths of 1-1/2" and 2" and comes standard in a fire-retardant vinyl ester resin system, dark gray in color, with a smooth surface. Fibergratc’s molded HLC grating merits an ASTM E-84 flame spread rating of 25 or less and a Class I Fire Rating.
Unit of Measure

Allowable Spans for Vehicular Loads

N/A

  Wheel Load (lb) (1/2 Axle Load +30% impact) Load Distribution Allowable Span 2, 3
Parallel To Axle1 Perpendicular To axle 1-1/2" Deep HLC Molded Grating 2" Deep HLC Molded Grating
AASHTO Standard Truck4
32,000 lb Axle Load
Dual Wheels
(formerly AASHTO H-20)
 20,800 20" + 4" 8" 1'-2" 1'-5"
Automobile Traffic
5,0001b Vehicle
1 500 lb Load
55% Drive Axle Load
 2,220 8" + 4" 8" 2'-2" 2'-8"
5 Ton Capacity Forklift
14,4001b Vehicle
24,400 lb Total Load
85% Drive Axle Load
 13,480 11" + 4" 11" 1'-1" 1'-5"
3 Ton Capacity Forklift
9 800 lb Vehicle
15.BO0 lb Total Load
85% Drive Axle Load
 8,730 7" + 4" 7" 1'-0" 1'-4"
1 Ton Capacity Forklift
4 200 lb Vehicle
6 200 lb Total Load
85% Drive Axle Load
3,245 4" + 4" 4" 1'-7" 2'-1"

Notes
  1. Load is carried by the grating load bars immediate under wheel + four additional load bars adjacent to wheel.
  2. Allowable span is based on a 0.25” maximum deflection and a Factor of Safety 3.0. The other criteria may be required by certain construction codes. Check codes requirements to determine design criteria.
  3. ALLOWABLE SPAN IS STRONGLY DEPENDENT ON WHEEL WIDTH AND VEHICLE WEIGHT/ LOAD CAPACITY. If your application varies from the values given on this table, contact Fibergrate Engineering for application assistance.
  4. Load based on the AADHTO Standard Truck Load as defined in AASHTO LAFD Bridge Design Specifications. 2nd Ed, This does not imply that the allowable span the deflection requirements of this specification.

1-1/2" Molded HLC Grating

No of Bars/Foot of Width

 N/A 12

Load Bar Width

 N/A 0.43"

Load Bar Centers

 N/A 1"

Open Area

 N/A 48%

Approximate Weight

 N/A 6.2 psf

Panel Size

 N/A 6' x 4' (span)

Engineering Properties Per Ft of Width

 N/A A = 7.45 in²
I = 1.39 in4
S = 1.80 in³
Average EI = 2,400,000 lb-in²

2" Molded HLC Grating

No of Bars/Foot of Width

 N/A 12

Load Bar Width

 N/A 0.48"

Load Bar Centers

 N/A 1"

Open Area

 N/A 48%

Approximate Weight

 N/A 8.4 psf

Panel Size

 N/A 6' x 4' (span)

Engineering Properties Per Ft of Width

 N/A A = 10.26 in²
I = 3.40 in4
S = 3.27 in³
Average EI = 6,000,000 lb-in²