Specifications include, but are not limited to: he pipes and fittings are used, on an as-needed basis, for the repair, replacement, and installation within the City of Phoenix water infrastructure. 3.1. All ductile iron pipes and fittings shall be manufactured in accordance with the ANSI A21.10, and latest AWWA Specification C-151. 3.2. All ductile iron pipes and fittings shall conform to the requirements of the ANSI A21.10, and the latest AWWA C-110. 3.3. All ductile pipes shall be cement lined in accordance with the ANSI, and the latest AWWA and Specifications AWWA C-104 (ANSI A21.4). The lining shall be applied to the bare clean metal of the pipe. 3.4. All ductile iron pipes shall have push-on or mechanical joints as specified in, and in accordance with, the ANSI A21.11, and the latest AWWA Specification C-111. Superbell-Tite and Tyton joints are acceptable. 3.5. The rubber gaskets for ductile iron pipe and fittings shall be in accordance with the ANSI A21.11, and the latest AWWA specification C-111. 3.6. Nominal laying length shall be eighteen (18) feet. 3.7. Thickness class shall be fifty (50)