When it comes to making use of modern iron casting design and manufacturing, EJ has invested time and energy into delivering safe,
EJ uses advanced technology to produce products that aren’t ‘overbuilt’. Engineers focus on high caliber design and consistent material quality. The result: covers, frames, grates and hatches that are stronger, lighter and optimized for real world performance. Less fuel and raw material
Ratings on EJ products exceed AASHTO M 306 proof load requirements and remain compatible with existing specifications in your city’s network.
Because the specifications are set by respected organizations like AASHTO (American Association of State Highway and Transportation Officials) and ASTM, load ratings are one of the best and most uniform standards for assessing the quality of street
To be rated for heavy duty traffic, construction castings must pass proof load tests as described in the AASHTO M306 guidelines. Specifically, the testing procedure calls for the application of 40,000 pounds of force—that’s about ten minivans—to a 9”x9” contact area, for one minute, in the center of the cover or grate. The casting is then inspected and rejected if any cracks or deformations are found. EJ takes this test very seriously, and our castings are typically tested far beyond this specified proof load. To maximum strengths, we test to destruction. This rigorous testing protocol is your assurance that EJ covers and grates will stand up to all expected traffic conditions.