SECTION NONREINFORCED CONCRETE SEWER PIPE

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1 SECTION PART 1 GENERAL 1.1 SUMMARY A. Section Includes: Furnishing and installing nonreinforced concrete sewer pipe. Provide concrete sewer pipe less than 12 inches in diameter, and in other sizes when specifically called for, to be nonreinforced concrete pipe. B. Related Work Specified in Other Sections Includes: 1. Section Laying and Jointing Buried Pipelines 2. Section Leakage Tests 1.2 REFERENCES A. Codes and standards referred to in this Section are: 1. ASTM C 14 - Specification for Concrete Sewer, Storm Drain, and Culvert Pipe 2. ASTM C Specification for Joints for Circular Concrete Sewer and Culvert Pipe, Using Rubber Gaskets 3. ASTM C Test Methods for Concrete Pipe, Manhole Sections, or Tile 1.3 SUBMITTALS A. General: Provide all submittals, including the following, as specified in Division 1. B. Shop Drawings: Submit complete shop drawings of all plastic liner, details of installation and joints between pipes and structures, between other pipes and all other joints for approval. C. Samples: Submit samples of the type of sheet and strip plastic liner plate for approval, together with a list of ingredients from which the sheets and strips are to be compounded. Submit the list to show the Page 1 of 6

2 percentage of each ingredient used in the formulation. No changes in formulation are permitted without prior approval. D. Quality Control: Submit certified test results of all shop tests for approval. 1.4 QUALITY ASSURANCE A. General: Provide concrete sewer pipe that is precast or machine made and of the product of a concern that can demonstrate by tests and installation records satisfactory experience in manufacturing concrete pipe of the quality and type specified. B. Provide nonreinforced concrete pipe meeting the requirements of ASTM C 14 for Class 2 or Class 3 nonreinforced concrete pipe. C. Classes: Provide the classes of concrete sewer pipe for the various pipelines as shown or specified. 1.5 DELIVERY, STORAGE AND HANDLING A. Deliver, store and handle all products and materials as specified in Division 1 (and as follows:) PART 2 PRODUCTS 2.1 MATERIALS A. Concrete Pipe: Manufacture all nonreinforced concrete pipe in the longest lengths normally available except where shorter lengths are required for pipeline curves or at junctions with structures whose location cannot be adjusted. 1. Design: Cure all pipe by steam or membrane curing. Water curing is not permitted. a. Do not deliver pipe to the site of the work until it has attained an age of at least 12 days. B. Specials, Fittings and Accessories: Provide specials, fittings, and accessories where shown, specified or required, and manufactured in accordance with the applicable sections of the respective standard of the adjoining pipe. Provide joints the same as in the adjoining pipe. Page 2 of 6

3 Provide the interior surface of bends of the same smoothness and diameter as the adjoining pipe. Provide the center line radius of curvature to be equal, in dimension, to the inside diameter of the pipe. 1. Strength: Design all specials, fittings, and accessories to have the same strength as the class of the adjoining pipe. Submit working drawings in conjunction with those submitted for the entire pipeline. C. Joints: Have nonreinforced concrete pipe manufactured with bell and spigot ends suitable for use with a rubber gasket joint. 1. Gaskets: Provide pipe ends for use with rubber gaskets that are suitably reinforced or of sufficient thickness to withstand the stresses caused by the compression of the gasket without cracking or fracturing, and provide surfaces that are smooth and free from spalls, cracks, fractures, and imperfections that would adversely affect the performance of the joint. 2. Gasket Design: Provide rubber gaskets of the 0-ring type. Provide the composition and physical requirements of the gasket for joints not normally subjected to internal pressure meeting the requirements of ASTM C 443. Do not stretch the gasket more than 20 percent when placed on the spigot of the pipe. Provide the gasket of such size that when the joint is off center sufficiently to cause the outer surface of the spigot end of the pipe and the inner surface of the bell end of the adjacent pipe to come into contact at some portion of their periphery, the deformation of the stretched rubber gasket is not more than 50 percent at the point of contact nor less than 20 percent at any point of the normal diameter or thickness of the gasket before deformation. Provide the gasket to be the sole element depended upon to make the joint watertight. 3. Bell and Spigot: Provide inside surfaces of the bell and outside surfaces of the spigot to be parallel with each other within one degree and, unless otherwise permitted, with an angle of not more than 2 degrees with the longitudinal axis of the pipe. Angles greater than 2 degrees will be approved only if plant or field hydrostatic tests show that the adjacent pipes can be properly joined and that the joint will not leak under a deflection sufficient to open one side of the joint 1/2-inch wider than the fully compressed position. In no case are angles of greater than 5 degrees Page 3 of 6

4 approved. Provide the spigot with a preformed groove of sufficient depth to hold the gasket securely in place and produce the proper compression in the gasket. 4. Grout: Fill the interior annular space of each joint, for pipe sizes 30 inches and larger in diameter, with cement grout as specified in Section SOURCE QUALITY CONTROL A. Tests: Test concrete sewer pipe in accordance with the applicable provisions of ASTM C 497 as required by the ASTM Specification for the pipe. Test not less than three sections of each size and class of pipe. B. Basis of Acceptance: Conform the basis of acceptance for nonreinforced concrete pipe with Section 5.1 of ASTM C 14. C. Results: Have the manufacturer submit certified test results of these tests for approval. Provide the number of pipe tested equal to one percent of the number of pipe manufactured in any one size and class, except that not less than three pipes are to be tested unless otherwise approved. PART 3 EXECUTION 3.1 INSTALLATION A. General: Install all nonconcrete sewer pipe in accordance with the manufacturer's recommendations and approved shop drawings and as specified in Division 1. B. Install nonreinforced concrete sewer pipe in accordance with the requirements of Section FIELD QUALITY CONTROL A. Tests: After installation of the nonreinforced concrete pipe and all appurtenances, subject the pipeline to a field running test, as specified in Division 1, under actual operating conditions. B. Leakage Tests: Test the nonreinforced concrete pipelines for leakage after completion in accordance with Section Page 4 of 6

5 3.3 SCHEDULES A. Refer to the schedules contained in Section Laying and Jointing Buried Pipelines for information on the piping that is to be constructed using the pipe materials and methods specified herein. END OF SECTION Page 5 of 6

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