For use in the Denver Water Service Area

Materials Specification – 23
for
Meter Pit Domes And Covers

1. General:

Meter pit domes and covers shall be of double lid frost proof construction and shall fit a 20 inch ID concrete meter pit ring.

2. Materials and Construction:

The meter pit dome may be constructed of aluminum in accordance with ASTM A 132, or cast iron in accordance with ASTM A 48.

The cap type top lid shall be cast iron or polymer concrete. The cast iron lid shall have a recess approximately 7 inches diameter by 3/4 inch deep to hold an Itron Pit ERT. There shall be a center hole, 2 inches in diameter to accept the ERT, and three drainage holes within the recessed area. The polymer concrete lid shall have integral supports to hold an Itron Pit ERT below the surface of the lid, in accordance with Itron’s installation instructions. All top lids shall be furnished with a worm-gear locking bolt with a large 5-sided brass nut.

The inner frost lid shall be molded of high-density polyethylene at least 1/8 inch thick. The frost lid shall be dish-shaped with a recess 2-1/2 to 3 inches deep with three to five 1/4 inch diameter drainage holes located around the edge of the recessed area. There shall be a 1/4 inch wide notch the full width of the top lip, and a lifting tab projecting 2 inches inward with a 9/16 inch or larger hole.

3. Acceptable Manufacturers:

Castings, Inc.	#M-70-AL
	#M-70-CI
Armorcast Products Co.	Polymer Concrete Pit Lid