For use in the Denver Water Service Area |
Materials Specification – 13
for
Polyethylene Encasement Material
1. General:
All polyethylene encasement material shall be manufactured in accordance with AWWA C105, with the following additional requirements or exceptions.
2. Materials:
The raw material used to manufacture polyethylene film shall be Type I, Class A, Grade E-1, in accordance with ASTM D 1248.
3. Physicals:
The polyethylene film shall meet the following test requirements:
| Tensile Strength | 1200 psi minimum |
| Elongation | 300% minimum |
| Dielectric Strength | 800 V/mil thickness minimum |
| Thickness | 8 mils minimum nominal with minus tolerance not exceeding 10% of nominal |
| Flow Rate | 0.4 maximum |
4. Certifications:
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 shall be sent to Denver Water.