Corporate Headquarters
301 Spring Street
East Jordan, MI 49727

800.626.4653
MADE IN THE USA

Proof load tests at EJIW are performed in accordance with the latest revision of AASHTO M306. For highway traffic service this test is described as 40,000 lb. load concentrated on a 9" x 9" area placed in the center of the grate or cover and held for one minute. The casting is carefully inspected after the test. Any crack or detrimental deformation will cause the casting to be rejected. Many EJIW castings are tested far beyond the specified proof load, often to destruction. East Jordan Iron Works maintains a load bearing testing machine and has been actively testing street castings for many years.