1、AWWA Standard SM Concrete Pressure Pipe, Bar-Wrapped Steel-Cylinder Type Effective date: April 1, 2017. First edition approved by AWWA Board of Directors Jan. 26, 1970. This edition approved Jan. 14, 2017. Approved by American National Standards Institute Jan. 3, 2017. ANSI/AWWA C303-17 (Revision of
2、 ANSI/AWWA C303-08) Copyright 2017 American Water Works Association. All Rights Reserved. ii AWWA Standard This document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describe minimum requirements and do not contain all of the engineering and admin
3、istrative information normally contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until each optional feature is specified by the user, the product or service is not fully defined. AWWA pub- lication of a standard does not cons
4、titute endorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, or code of any governmental authority. AWWA st
5、andards are intended to represent a consensus of the water industry that the product described will provide satisfactory ser- vice. When AWWA revises or withdraws this standard, an official notice of action will be placed on the first page of the Official Notice section of Journal American Water Wor
6、ks Association. The action becomes effective on the first day of the month following the month of Journal American Water Works Association publication of the official notice. American National Standard An American National Standard implies a consensus of those substantially concerned with its scope
7、and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether that person has ap - proved the standard or not, from manufacturing, mar
8、keting, purchasing, or using products, processes, or procedures not conforming to the standard. American National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goods made in conformity with an American National Standard are encour - age
9、d to state on their own responsibility in advertising and promotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards. Caution n oti Ce : The American National Standards Institute (ANSI) approval date on the front cover of this sta
10、ndard indicates completion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSI procedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date of publication. Purchasers of American
11、National Standards may receive current information on all standards by calling or writing the American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; 212.642.4900; or emailing infoansi.org. ISBN-13, print: 978-1-58321-212-2 eISBN-13, electronic: 978-1-61300-411-
12、1 DOI: http:/dx.doi.org/10.12999/AWWA.C303.17 All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts or quota
13、tions for review purposes, without the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USA hours of work by your fellow water professionals. Revenue from the sales of this AWWA material supports ongoing product development. Unauthorized distribution
14、, either electronic or photocopied, is illegal and hinders AWWAs mission to support the water community. This AWWA content is the product of thousands of Copyright 2017 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Standards Subcommittee on ANSI/AWWA C303, w
15、hich reviewed and approved this standard, had the following personnel at the time: Sam A. Arnaout, Chair S.A. Arnaout, U.S. Pipe, Grand Prairie, Texas (AWWA) W.C. Duke, Bureau of Reclamation, Denver, Colo. (AWWA) V.E. Fernandez-Cuervo, MiamiDade Water and Sewer Department, Miami, Fla. (AWWA) R.L. Gi
16、bson, Freese and Nichols Inc., Fort Worth, Texas (AWWA) The AWWA Standards Committee on Concrete Pressure Pipe, which reviewed and approved this standard, had the following personnel at the time of approval: Wayne R. Brunzell, Chair Richard I. Mueller, Secretary User Members K.A. Danley, Des Moines
17、Water Works, Des Moines, Iowa (AWWA) W.C. Duke, Bureau of Reclamation, Denver, Colo. (USBR) N.D. Faber, San Diego County Water Authority, Escondido, Calif. (AWWA) J.A. Fleming,* Standards Council Liaison, Greater Cincinnati Water Works, Cincinnati, Ohio (AWWA) J.C. Gehrig, Tarrant Regional Water Dis
18、trict, Fort Worth, Texas (AWWA) J.G. Grunow, Louisville Water Company, Louisville, Ky. (AWWA) D.H. Marshall, Tarrant Regional Water District, Fort Worth, Texas (AWWA) N.A. Wigner, Los Angeles Department of Water and Power, Los Angeles, Calif. (AWWA) General Interest Members H.H. Bardakjian, Consulti
19、ng Engineer, Glendale, Calif. (AWWA) G.E.C. Bell, HDR Engineering Inc., Claremont, Calif. (AWWA) W.R. Brunzell, Brunzell Associates Ltd., Skokie, Ill. (AWWA) B.C. Coltharp, Freese and Nichols Inc., Dallas, Texas (AWWA) * Liaison, nonvoting Alternate Copyright 2017 American Water Works Association. A
20、ll Rights Reserved. iv D. Dechant, Dechant Infrastructure Services, Aurora, Colo. (AWWA) F.S. Kurtz,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) S.A. McKelvie, HDR Engineering Inc., Boston, Mass. (AWWA) J.J. Roller, CTL Group, Skokie, Ill. (AWWA) A.E. Romer, AECOM, Orange, Calif. (AWWA)
21、T.A. Tovey, CH2M, Bellevue, Wash. (AWWA) A.W. Tremblay, Tipp City, Ohio (AWWA) M.S. Zarghamee, Simpson Gumpertz and a mortar coating not less than -in. (19-mm) thick measured from the outside of the reinforcing bars is placed using high-velocity impaction. This standard describes bar-wrapped steel-c
22、ylinder concrete pressure pipe in sizes ranging from 10 in. through 72 in. (250 mm through 1,830 mm) in diameter, which is the prevailing range in sizes. The pipe is generally made in lengths ranging from 24 ft to 40 ft (7.5 m to 12.5 m). In this standard, however, the laying length for pipe 18 in.
23、(450 mm) in diameter and smaller is restricted to a maximum of 36 ft (11 m). This type of pipe is used extensively for cross-country transmission mains, distribution feeder mains, water treatment plants, and other uses (see Section III, Use of This Standard). I.B. History. The first edition of this
24、standard, designated ANSI/AWWA C303-70, Reinforced Concrete Water PipeSteel Cylinder Type, Pretensioned, was approved by the AWWA Board of Directors Jan. 26, 1970. Federal Specification and Standard SS-P-381 (April 2, 1953), SS-P-381 (Sept. 14, 1955), and SS-P-381 (Dec. 14, 1967) preceded this stand
25、ard and were used as the basis for AWWA C303. An addendum, designated ANSI/AWWA C303a-74, was subsequently approved Jan. 28, 1974. The third printing, issued July 27, 1973, included an erratum notice correcting errors in the original printing. The second edition, designated ANSI/AWWA C303- 78, Reinf
26、orced Concrete Pressure PipeSteel Cylinder Type, Pretensioned, for Water and Other Liquids, was approved June 25, 1978. An addendum designated ANSI/ AWWA C303a-81 was approved February 1981 and subsequently published. The third edition, designated ANSI/AWWA C303-87 with the same title as the second
27、edition, was approved June 14, 1987. The fourth edition, designated ANSI/AWWA C303-95, * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Copyright 2017 American Water Works Association. All Rights Reserved. viii Concrete Pressure Pipe, Bar-Wrapped Steel-
28、Cylinder Type, was approved Jan. 22, 1995. Subsequent editions were approved on June 16, 2002, and Jan. 27, 2008. This edition was approved on Jan. 14, 2017. I.C. Acceptance. In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF
29、 International (NSF) to develop voluntary third-party consensus standards and a certification program for direct and indirect drinking water additives. Other members of the original consortium included the Water Research Foundation (formerly AwwaRF) and the Conference of State Health and Environment
30、al Managers (COSHEM). The American Water Works Association (AWWA) and the Association of State Drinking Water Administrators (ASDWA) joined later. In the United States, authority to regulate products for use in, or in contact with, drinking water rests with individual states.* Local agencies may cho
31、ose to impose requirements more stringent than those required by the state. To evaluate the health effects of products and drinking water additives from such products, state and local agencies may use various references, including 1. Specific policies of the state or local agency. 2. Two standards d
32、eveloped under the direction of NSF: NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 3. Other references, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex, and other standards considered appropriate
33、by the state or local agency. Various certification organizations may be involved in certifying products in accor- dance with NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdictions. Accreditation of certi- fication
34、 organizations may vary from jurisdiction to jurisdiction. Annex A, “Toxicology Review and Evaluation Procedures,” to NSF/ANSI 61 does not stipulate a maximum allowable level (MAL) of a contaminant for substances not regulated by a USEPA final maximum contaminant level (MCL). The MALs of an unspecif
35、ied list of “unregulated contaminants” are based on toxicity testing guidelines * Persons outside the United States should contact the appropriate authority having jurisdiction. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48105. Both publications available from National Academy of Scien
36、ces, 500 Fifth Street, NW, Washington, DC 20001. Copyright 2017 American Water Works Association. All Rights Reserved. ix (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA C303 does not a
37、ddress additives requirements. Thus, users of this standard should consult the appropriate state or local agency having jurisdiction in order to 1. Determine additives requirements, including applicable standards. 2. Determine the status of certifications by parties offering to certify products for
38、contact with, or treatment of, drinking water. 3. Determine current information on product certification. II. Special Issues. II.A. Advisory Information on Product Application. 1. Basis of design. ANSI/AWWA C303 pertains to the manufacture and test- ing of the steel cylinder, bar reinforcement, join
39、t rings, concrete or cementmortar lin- ing, and cementmortar coating. Overall design of bar-wrapped steel-cylinder concrete pressure pipe is described in AWWA Manual M9, Concrete Pressure Pipe. The design of the steel cylinder thickness and bar reinforcement is primarily governed by internal pressur
40、e, including operating static and transient pressures. The design procedure de- scribed in AWWA Manual M9 is used to determine the thickness of the steel cylinder and the required bar reinforcement. 2. Deflection control. The pipe described in this standard will safely support normal and usual exter
41、nal loads when installed according to appropriate and adequate bedding and backfilling procedures. T o ensure satisfactory performance and continued serviceability of the pipe, bedding and backfilling procedures must be followed that will enable the deflection of the pipe to be controlled and kept w
42、ithin the limits con- tained in AWWA Manual M9. II.B. Other Special Issues. Other special issues, including thrust restraint and field welding of pipe joints, are addressed in AWWA Manual M9. II.C. Chlorine and Chloramine Degradation of Elastomers. The selection of materials is critical for water se
43、rvice and distribution piping in locations where there is a possibility that elastomers will be in contact with chlorine or chloramines. Documented research has shown that elastomers such as gaskets, seals, valve seats, and encapsulations may be degraded when exposed to chlorine or chloramines. The
44、impact of degradation is a function of the type of elastomeric material, chemical concentration, contact surface area, elastomer cross section, and environmental conditions, as well as temperature. Careful selection of and specifications for elastomeric materials and the specifics of their application for each water system component should be considered to Copyright 2017 American Water Works Association. All Rights Reserved.
