For use in the Denver Water Service Area

Materials Specification – 1
for
Ductile Iron Pipe

Push-On Single Gasket Joint 3 Inch, 4 Inch, 6 Inch, 8 Inch, 12 Inch, 16 Inch, 20 Inch, 24 Inch, 30 Inch, 36 Inch, And 42 Inch Diameter

1. General:

All ductile iron pipe shall be manufactured in accordance with AWWA C151, with the following additional requirements or exceptions.

2. Size of Pipe:

This Specification shall cover ductile iron pipe in 3 inch, 4 inch, 6 inch, 8 inch, 12 inch, 16 inch, and 20 inch, 24 inch, 30 inch, 36 inch, and 42 inch nominal diameters.

3. Joint Type:

Push-on Single Gasket type conforming with applicable requirements of AWWA C111. Joint types other than Push-on Single Gasket are acceptable if specifically approved by Denver Water.

4. Pipe Wall Thickness:

Pipe furnished under this Specification shall have the following minimum ductile iron wall thickness:

Nominal Pipe Diameter (Inches)		Minimum Ductile Iron Wall Thickness (Inches)
3		0.25
4		0.26
6		0.25
8		0.27
12		0.31
16		0.34
20		0.36
24		0.41
30		0.43
36		0.48
42		0.53

5. Pipe Length:

Pipe furnished under this Specification shall have normal laying lengths of either 18 feet or 20 feet. Random lengths are not acceptable.

6. Material Strength:

The grade of iron shall be 60/42/10.

7. Cement-Mortar Lining:

Pipe furnished under this Specification shall have standard thickness cement-mortar linings in accordance with AWWA C104.

8. Certification:

The manufacturer shall furnish a sworn statement that the inspection and all of the specified tests have been made, and the results thereof comply with the requirements of the applicable Standard(s) herein specified. A copy of the Certification including compliance with NSF/ANSI 61 shall be sent to Denver Water.

9. Acceptable Manufacturers:

American Cast Iron Pipe
Griffin Pipe
Pacific States
U.S. Pipe