10-66 (B) Force Main Sewer Pipe
Use ductile iron pipe that conforms to AWWA C151/A21.51. Use ductile iron pipe fittings and specials conforming to AWWA C110/A21.10 for standard size fittings or AWWA C153/A21.53 for compact fittings. Manufacture fittings with a cement mortar lining and a seal coat in accordance with AWWA C104/A21.4. Use pipe and fittings with either mechanical joints or push- on joints conforming to AWWA C111/A21.11. When required or necessary, use approved type joint restraint devices with a minimum working pressure rating of 200 psi and a factor of safety of 2. WATER PIPE AND FIT TINGS 1036 -1 GENERAL All materials when used to convey potable drinking water shall meet the National Sanitation Foundation Standard No. 61. All materials in contact with potable water shall be in conformance with Section 1417 of the Safe Drinking Water Act. 1036 -2 COPPER PIPE For indoor plumbing use copper pipe and sweate d fittings conforming to ASTM B 88 for the type and temper called for in the plans and s pecifications . Cast fittings for copper pipe shall meet ASTM B61 or ASTM B62. For buried service, use copper water pipe and tube conforming to ASTM B88 soft annealed Type K. Use flared or compression type fittings conforming to AWWA C800 and local plumbing codes to connect pipe and tube. 1036 -3 PLASTIC PIPE
A.PVC Pipe
1.Pressure Rated Pipe Use PVC pipe conforming to ASTM D2241 or to AWWA C905 with a minimum SDR of 21 and minimum pressure rating of 200 psi. Use pipe with push- on type joints having bells made as an integral part of the pipe conforming to ASTM D3139 or pipe with butt fused joints made from ASTM D1784 Class 12454B plastic formulated for fusing. Use PVCO pipe conforming to ASTM F1483 or to AWWA C909 for molecularly oriented pipe with a minimum pressure rating of 200 psi. Use pipe with push- on type joints having bells made as an integral part of the pipe conforming to ASTM D3139.
2.Pressure Class Pipe Use PVC pipe conforming to AWWA C900 with a minimum DR of 18 and a minimum pressure class of 235 psi. Use pipe with push- on type joints having bells made as an integral part of the pipe conforming to ASTM D3139 or pipe with butt-fused joints made from ASTM D1784 Class 12454B plastic formulated for fusing.
B.Polyethylene (PE) Pipe Use PE water pipe and tubing that conforms to AWWA C901 or AWWA C906 with a minimum pressure class of 200 psi.
10-67 1036 -4 Steel Pipe
A.Water Pipe Use galvanized steel pipe meeting ASTM A53 for standard weight. Fittings for steel water pipe shall meet ASTM A126 for Class B iron or of ASTM A197. Galvanize all fittings in accordance with ASTM A153.
B.Encasement Pipe Use steel pipe meeting an ASTM specification with the minimum yield strength of 35,000 psi. Use pipe that is circular in shape and straight in length. 1036 -5 DUCTILE IRON PIPE AND FITTINGS Use ductile iron pipe that conforms to AWWA C151/A21.51. Use ductile iron pipe fittings and specials conforming to AWWA C110/A21.10 for standard size fittings or AWWA C153/A21.53 for compact fittings. Manufacture fittings wit h a cement mortar lining and a seal coat in accordance with AWWA C104/A21.4. Use either mechanical joints or push- on joints conforming to AWWA C111/A21.11. When required or necessary, use approved type joint restraint devices with a minimum working pressu re rating of 200 psi and a factor of safety of 2. 1036 -6 FIRE HYDRANTS Use dry barrel type fire hydrants conforming to AWWA C502 with a minimum 4 1/2 inch diameter valve opening with a 6 inch mechanical joint inlet connection, with two 2 1/2 inch hose connections and with one 4 1/2 inch pumper connection. Outlets shall have national standard fire hose coupling threads. Use fire hydrants with a minimum bury length of 36 inches . Securely chain nipple caps to the barrel. Paint hydrants with one coat of primer paint and two coats of an approved paint of the owner ’s standard color. Apply the final coat after hydrant installation. 1036 -7 WATER VALVES
A.Gate Valves Use iron body gate valves which conform to AWWA C500 for bronze mounted, double disc, parallel seat type valves or to AWWA C509 for resilient seat -type valves or to AWWA C515 for reduced- wall, resilient seat gate valves . For buried service use gate valves with non- rising stems, 2 inch square operating nuts, O -ring seals and which open by turning counter clockwise. Gate valves shall have mechanical joint ends conforming to AWWA C111/A21.11. Gate valves shall have a design working water pressure of 200 psi .
B.Bronze Gate Valves Use bronze gate valves conforming to ASTM B62 with tee head operating nuts and solid wedges. Use valves with a design working pressure of 200 psi.
C.Tapping Valves Use tapping valves conforming to Subarticle 1036 -7(A) with appropriately sized openings, with flanged by mechanical joint ends and pressure rated at 200 psi.
D.Insertion Valves
1.Housing- Seated Insertion Valves Use iron body insertion valves which conform to AWWA C515 for reduced- wall, resilient seat gate valves, with the exception that the valve body may be constructed of two pieces. For buried service use insertion valves with non -rising stems, 2 inch square operating nuts, O -ring seals and which open by turning counter clockwise . Insertion valves shall have mechanical joi nt ends conforming to AWWA
Source: North Carolina Standard Specifications for Roads and Structures, 2024 Edition. Pages 482–483 of 857.