852UNDERDRAIN PIPE MATERIALS

730

UNDERDRAIN PIPE MATERIALS

852.01Vitrified Clay Pipe

This pipe shall meet requirements for standard strength, either plain or perforated pipe of AASHTO M 65 or ASTM C 700.

852.02Concrete Pipe

This pipe shall meet the requirements of AASHTO M 86, Class 1 for plain pipe; for perforated pipe AASHTO M 86, Class 1 and AASHTO M 175, Type 1 or 2; for porous concrete pipe, AASHTO M 176, extra strength class, with special attention directed to Section 831, Precast Concrete Products.

852.03Corrugated Iron or Steel Pipe

This pipe shall meet the requirements of AASHTO M 36 for Type III, Class I, II, or III Pipe, fabricated from a specified sheet thickness of 0.064 inches {1.6 mm} and may be perforated or non-perforated as required.

852.04Coated Corrugated Iron or Steel Pipe

This pipe shall meet the requirements of Article 852.03 coated as specified in Subarticle 850.02(c).

852.05Corrugated Aluminum Pipe

This pipe shall meet requirements of AASHTO M 196 for Type III, Class I, II, or III, pipe fabricated from a specified sheet thickness of 0.060 inches {1.5 mm} and may be perforated or non-perforated as required.

852.06Coated Corrugated Aluminum Pipe

This pipe shall meet requirements of Article 852.05 coated as specified in Subarticle 850.02(c).

852.07Poly(Vinyl Chloride) (P.V.C.) Pipe

This pipe shall meet the requirements of ASTM D 3034. Pipe having a nominal diameter of 4 inches {100 mm} shall have a standard dimension ratio (SDR) of 35; pipe having a nominal diameter of 6 inches {150 mm} or more shall have a standard dimension ratio of either 35 or 41. Perforations, if required, shall be in accordance with the perforation requirements of AASHTO M 175 for either Type 1 or Type 2. Pipe meeting the requirements of ASTM F 949 or ASTM F 758, Type PS 28 or Type PS 46, may be used in lieu of the above designated pipe.

852.08Acrylonitrile-Butadiene-Styrene (A.B.S.) Pipe

This pipe shall meet the requirements of ASTM D 2751 for SDR 42 or SDR 35 pipe. Perforations, if required, shall be in accordance with the perforation requirements of AASHTO M 175 for either Type 1 or Type 2.

852.09High Density Polyethylene (HDPE) Pipe

This pipe shall meet the requirements of AASHTO M 252, and in addition have a full circular cross-section, with an outer corrugated pipe wall and a smooth inner liner. Corrugations may be either annular or helical. Pipe may be perforated or non-perforated as required. HDPE pipe shall be furnished from an approved producer. Approved producers are shown on List I-11, "Producers of High Density Polyethylene Pipe" in the Department’s "Material, Sources and Devices with Special Acceptance Requirements" manual. Information concerning this list is given in Subarticle 106.01(f).

852.10Filter Material

The coarse filter material may be slag, gravel, or crushed stone, meeting gradation of ALDOT sizes 67, 7, 78, or 710, at the Contractor's option, provided he gives the Engineer written notice of his choice in advance. Soundness and Los Angeles Abrasion tests will not be required.

Fine filter material shall be reasonably clean, natural sand or manufactured sand produced from the crushing of quartzite gravel, sandstone, or sandstone conglomerates meeting the following requirements: Permeability - at least 0.5 mm/sec when measured by the constant head method of AASHTO T 215. SANITARY SEWER PIPE, MANHOLES, AND APPURTENANCES 731

Gradation limits when tested in accordance with AASHTO T 27. Sieve No. % Passing 3/8 inch {9.5 mm} 95 - 100 No. 200 {75 µm} 0 - 7

852.11Handling and Storage

Pipe shall be handled, transported, delivered, and stored by methods that will not damage the pipe or coating. Any pipe damaged or bent will be rejected, even though previously inspected and found satisfactory, and shall be replaced or repaired at the Engineer's option, without additional compensation. Bituminous coating scratched or damaged shall be repaired in a satisfactory manner with bituminous material.

SANITARY SEWER PIPE, MANHOLES, AND APPURTENANCES

853.01Ductile Iron Sewer Pipe

Ductile Iron pipe shall meet the requirements of ANSI/AWWA C 151/A21.51 unless otherwise stated in the project specifications and plans. The pipe shall have an inner cement mortar lining meeting AWWA C 104 and an outer bituminous coating. The push-on joints shall meet the requirements of AWWA C 111. The flanged pipe joints shall meet the requirements of AWWA C 115. Restrained joints shall meet the requirements of AWWA C 110. Lock joint pipe shall meet the requirements of AWWA C 151. The pipe length shall be 18 – 20 feet {5.5 – 6.1 meters}.

853.02Ductile Iron Fittings

Ductile Iron fittings shall meet the requirements of AWWA C 110 or AWWA C 151 when approved by the Engineer. Fittings shall have an inner cement mortar lining meeting AWWA C 104 and an outer bituminous coating. The fitting shall have a minimum pressure rating equal to the pipe being installed.

853.03Polyvinyl Chloride Sewer Pipe (PVC) and Fittings

Pipe for pressure flow applications shall meet the requirements of ASTM D 2241 for SDR 17 or AWWA C 900 for DR 18 with a minimum cell classification 12454-B as defined in ASTM D 1784. Fittings for pressure flow applications shall be ductile iron meeting the requirements of AWWA C 110. Pipe and fittings for gravity flow applications shall meet the requirements of ASTM D 2665, ASTM D 3034 for SDR 35, or ASTM F949 with a minimum cell classification 12454-B as defined in ASTM D 1784. Marking tape shall be provided for all PVC force mains to allow for locating by location equipment.

853.04High Density Polyethylene Pipe (HDPE) and Fittings

HDPE pipe and bends shall meet the requirements of ASTM D 1248, ASTM D 3350 (Grade PE 3408), and ASTM F 714. The HDPE pipe shall have a minimum wall thickness determined by the depth of bury and loading on the pipe.

853.05High Performance Polypropylene Pipe (PP) and Fittings

PP pipe and bends shall meet the requirements of AASHTO M330. The PP pipe shall have a minimum wall thickness determined by the depth of bury and loading on the pipe. PP pipe shall be furnished from an approved producer. Approved producers are shown on List I-14, "Producers of High Performance Polypropylene Pipe" in the Department’s "Materials, Sources and Devices with Special Acceptance Requirements" manual. Information concerning this list is given in Subarticle 106.01(f).

853.06Handling and Storage of Pipe

Pipe shall be handled, transported, delivered, and stored by methods that will not damage the pipe, coatings, or linings. Any pipe damaged or bent will be rejected even though previously inspected and found satisfactory, and shall be replaced or repaired at the Engineer's option, without additional compensation. Coating or linings scratched shall be repaired in a satisfactory manner with appropriate material. SANITARY SEWER PIPE, MANHOLES, AND APPURTENANCES 732

853.07Joint Materials for Pipe

Joint material shall provide a suitable waterproof joint capable of withstanding internal pressure of the system involved and be of an approved type. Thermally fused joints will be allowed if installed according to the pipe manufacturer’s recommendations.

853.08Manholes

Precast reinforced concrete manholes shall meet the requirements of ASTM C 478. The manhole shall consist of the base, riser, transition, and conical sections and shall have a minimal number of joints. The minimum nominal diameter of manholes shall be 48 inches {1220 mm} for pipe sizes less than 24 inches {600 mm}. The aggregate shall be calcareous rock. Concrete used to cast manholes shall comprised with Type I/II or Type II cement only. The cone shaped top section shall be either conical or eccentric as required by the project plans and specifications. The top section of manholes less than 6 feet {1.82 m} in depth shall be flat concrete slabs and shall conform to the requirements of ASTM C 478. Basis of acceptance for flat slab tops shall be either proof of design testing or rational design calculations as described in ASTM C 478 and shall be submitted to the Engineer for review. Both cone shaped top sections and flat slab tops shall be designed to withstand a minimum H-20 wheel loading in accordance with AASHTO requirements. A black mastic joint sealer as approved by the Engineer shall be placed on top of the cone section of the manhole before setting the castings to prevent infiltration. Manholes shall be supplied with pipe cutouts for all incoming and outgoing pipe. The pipe cutouts shall be fitted with flexible manhole pipe connectors (boots) that meet ASTM C 923 and as required by the Engineer. Cast iron frames and covers shall conform to the Plans in all essentials of design. All castings shall fit the manholes properly. All castings shall be made of clean, even grain, tough gray cast iron. The quality of iron in the castings shall conform to the current ASTM A 48 for Class 30 gray iron castings. Frames and covers shall weigh not less than that shown on the Plans. The castings shall be smooth, true to pattern and free from projections, sand holes or defects and shall properly fit the manhole opening. The portion of the frame and cover which forms the cover seal shall be machined so that no rocking of the cover is possible. The castings shall be coated with coal tar pitch varnish. The cover shall have non- penetrating pick holes. On paved streets, the frame and cover shall be set flush with and in the plane of the paved surface. Where shown on the plans or directed by the Engineer, sealed castings shall be of the bolted watertight manhole rings and covers and meet the above requirements. Manhole steps shall be steel rods encased in polypropylene plastic and shall be as approved by the Engineer. Steps may be Type PS-1 or PS-2. Steps shall conform to the requirements of ASTM C 478. Manhole steps shall be driven into the wet wall during manufacture to prevent each from working loose or pulling out. Manholes shall be constructed in the size, shape, and dimension as detailed in the Utilities Standard Drawings or on the plans.

853.09Crushed Stone Foundation for Pipe and Manholes

Crushed Stone shall be screened, washed and 100 percent shall be retained by a 1/4 inch {6 mm} sieve. Crushed stone shall have 100 percent passing a 1 inch {25 mm} sieve and shall be uniformly graded from maximum to minimum size. Foreign matter shall not exceed 3 percent by weight when dry.

853.10Air and Vacuum Valve

The air and vacuum valve for sanitary sewer shall permit unrestricted passage of air during filling of the force main and unrestricted entry of air during vacuum of the force main and rated for a minimum of 150 psi {1030 kPa}. The float shall be stainless steel. The valve shall not come into contact with the sewer. The valve shall have a National Pipe Thread (NTP) inlet and shall be fitted with back flushing device. The air and vacuum valve assembly shall be as detailed in the project plans and specifications.