Grate Loading - Static

 

 

 

Static Load Classifications 

based on

Modified AASHTO M306

   Load Class Load Class Load Class Load Class Load Class Load Class Load Class
A B C D E F G
Application

Light Duty

Pedestrian Traffic

Medium Duty

Sidewalks & Residential Parking

Heavy Duty 

Commercial   

Extra Heavy Duty

Roads and Highway

Extreme Heavy Duty

Hard Tire Forklifts, Heavy Vehicles

Airport Rated

Municipal and Regional Airports

Airport  Rated

 International and Military Airports or Intermodal Ports Facilities

Application Proof load  (psi)
75psi
150psi
310psi
494psi
620psi 
1235psi
2469 psi
Typical Applicable Standards
Foot traffic

Light Pneumatic Tire Traffic

A-A60005

Federal Specification  

AASHTO M306

H-20

AASHTO M306

HS-25  

Airport

 (100,000 lbs)

Airport

(200,000lbs)