Chemical Resistance Guide
Get detailed tables on chemical compatibility based on resin manufacturers’ data, including maximum allowable concentrations and temperatures.
Download GuideAvailable Resin Systems
PROGrid HLC molded grating is available in three resin systems, each providing different levels of corrosion protection. All three resin systems meet Class 1 Flame Spread Rating per ASTM E-84 test standards.
GPFR: A general-purpose orthophthalic polyester resin system that offers good corrosion resistance at an economical price.
IFR: A premium-grade isophthalic polyester resin system that provides excellent corrosion protection.
VFR: A vinylester resin system that provides the highest level of corrosion protection.
NOTE: Load carrying bars are oriented to run in the 6′ dimension of the panel. Panels furnished with closed bars on all sides.
Applications
- Flooring, platforms and ramps
- Storage areas
- Assembly lines
- Long-span walkways
- Trench covers with vehicular traffic
Features
- High strength
- Corrosion resistant
- Low conductivity
- Fire retardant
- Low maintenance
Allowable Spans for Vehicular Loads
|
Allowable Spans for |
Wheel Load (lb) |
Load Distribution |
Allowable Span in Inches |
||
|
Parallel |
Perpendicular |
1.5″ Deep HLC |
2″ Deep HLC |
||
|
AASHTO Standard Truck4 |
20,800 |
20″ + 4″ |
8″ |
1′-2″ |
1′-5″ |
|
Automobile Traffic |
2,220 |
8″ + 4″ |
8″ |
2′-2″ |
2′-8″ |
|
5 Ton Capacity Forklift |
13,480 |
11″ + 4″ |
11″ |
1’1″ |
1′-5″ |
|
3 Ton Capacity Forklift |
8,730 |
7″ + 4″ |
7″ |
1’0″ |
1′-4″ |
|
1 Ton Capacity Forklift |
3,425 |
4″ + 4″ |
4″ |
1’7″ |
2′-1″ |
NOTES: Allowable Spans for Vehicular Loads
- Load is carried by the grating load bars immediately under wheel + four additional load bars adjacent to wheel.
- Allowable Span is based on a 0.25″ maximum deflection and a Factor of Safety of 3.0. Other criteria may be required by certain construction codes. Check code requirements to determine design criteria.
- 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 Bedford for application assistance.
- Load based on the AASHTO Standard Truck Load as defined in AASHTO LRFD Bridge Design Specifications, 2nd Ed. This does not imply that the allowable span meets the deflection requirements of this specification.