Office Of Material Management

 ADJUSTING DEVICE (GRADE RINGS)

December 6, 2013

Construction and Material Specification 611.10 D for Adjustment to Grade reads in part ". . . install a casting or an acceptable adjusting device on file with the Laboratory, or an adjusting device approved by the Engineer to the new grade and install per the manufacturer's recommendations."

Listed below are products that through field use have been found to be acceptable adjustment devices.  This list is intended to be of assistance to the Engineer in their determination of approving different types of adjustment devices for use.

A product may be removed from this list at any time, at the sole discretion of the Department, if it has been found to fail to perform satisfactorily in the field.

 

 

GRADE RINGS MATERIAL TYPE

CMS MATERIAL REQUIREMENTS OR ACCEPTABLE MANUFACTURER
    Concrete 706.13
    Cast Iron 711.12 or 711.13
    Steel American Highway Products

    Steel

 East Jordan Iron Works
                                  Rubber Composite

East Jordan Iron Works

"INFRA-RISER"