1、 ANSI/AWWA C303-08 (Revision of ANSI/AWWA C303-02) Concrete Pressure Pipe, Bar-Wrapped, Steel- Cylinder Type AWWA Standard Effective date: Oct. 1, 2009. First edition approved by AWWA Board of Directors Jan. 26, 1970. This edition approved Jan. 27, 2008. Approved by American National Standards Insti
2、tute Aug. 13, 2009. 6666 West Quincy Avenue Advocacy Denver, CO 80235-3098 Communications T 800.926.7337 Conferences www.awwa.org Education and TrainingScience and TechnologySections The Authoritative Resource on Safe Water SMii AWWA Standard This document is an American Water Works Association (AWW
3、A) standard. It is not a specification. AWWA standards describe mini- mum requirements and do not contain all of the engineering and administrative information normally contained in specifications. The AWWA standards usually contain options that must be evaluated by the user of the standard. Until e
4、ach optional feature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constitute endorse- ment of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standards is entirely voluntary. This stan
5、dard does not supersede or take precedence over or displace any applicable law, regulation, or codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry that the product de- scribed will provide satisfactory service. When AWWA revises or w
6、ithdraws this standard, an official notice of action will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective on the first day of the month following the month of Journal AWWA publication of the official notice. American National Standard A
7、n American National Standard implies a consensus of those substantially concerned with its scope 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
8、preclude anyone, whether that person has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. American Na- tional Standards are subject to periodic review, and users are cautioned to obtain the latest edi
9、tions. Producers of goods made in conformity with an American National Standard are encouraged 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. Ca u t i o n n o t
10、i C e : The American National Standards Institute (ANSI) approval date on the front cover of this standard indicates comple- tion 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, o
11、r withdraw this standard no later than five years from the date of publication. Purchasers of American 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
12、-4900. 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 quotations for review purposes, without the
13、written permission of the publisher. Copyright 2009 by American Water Works Association Printed in USAiii Committee Personnel The AWWA Standards Subcommittee that reviewed and approved this standard, had the follow- ing personnel at the time: Sam A. Arnaout, Chair S.A. Arnaout, Hanson Pipe and a mor
14、tar 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-cylinder concrete pressure pipe in sizes ranging from 10 in. through 72 in. (250 mm through 1,830 mm) in diameter, which i
15、s 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. (450 mm) in diameter and smaller is restricted to a maximum of 36 ft (11 m). This type of pipe is used extensively for cr
16、oss-country transmission mains, distribution feeder mains, water treatment plants, and other uses (see Section III, Use of This Standard). History I.B. . The first edition of this standard, designated ANSI/AWWA C303-70, Standard for Reinforced Concrete Water PipeSteel Cylinder Type, Pretensioned, wa
17、s approved by the AWWA Board of Directors Jan. 26, 1970. An addendum, designated ANSI/AWWA C303a-74, was subsequently approved Jan. 28, 1974. The third printing, issued July 27, 1973, included an erratum notice that corrected errors in the original printing. The second edition, designated ANSI/ AWWA
18、 C303-78, Standard for Reinforced Concrete Pressure PipeSteel Cylinder Type, Pretensioned, for Water and Other Liquids, was approved June 25, 1978. In February 1981, an addendum designated ANSI/AWWA C303a-81 was approved and subsequently published. The third edition, designated ANSI/AWWA C303-87 wit
19、h the same title as the second edition, was approved on June 14, 1987. The fourth edition, designated ANSI/AWWA C303-95, Standard for Concrete Pressure Pipe, Bar-Wrapped, Steel-Cylinder Type, was approved on Jan. 22, 1995. The fifth edition, designated ANSI/AWWA C303-02, was approved on June 16, 200
20、2. This edition was approved on Jan. 27, 2008.viii Acceptance I.C. . In May 1985, the US Environmental Protection Agency (USEPA) entered into a cooperative agreement with a consortium led by NSF International (NSF) to develop voluntary third-party consensus standards and a certification program for
21、direct and indirect drinking water additives. Other members of the original consortium included the American Water Works Association Research Foundation (AwwaRF) and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association and the Association of State
22、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 choose to impose requirements more stringent than those required by the state. To evaluate the hea
23、lth effects of products and drinking water additives from such products, state and local agencies may use various references, including An advisory program formerly administered by USEPA, Office of Drinking 1. Water, discontinued on Apr. 7, 1990. Specific policies of the state or local agency. 2. Tw
24、o standards developed under the direction of NSF: NSF 3. /ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. Other references, including AWWA standards, 4. Food Chemicals Codex, Water Chemicals Codex, and other standards consid
25、ered appropriate by the state or local agenc y. Various certification organizations may be involved in certifying products in accordance with NSF/ANSI 61. Individual states or local agencies have authority to accept or accredit certification organizations within their jurisdiction. Accreditation of
26、certification 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 o
27、f an unspecified 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 N. Dixboro Road, Ann Arbor, MI 48105. American National Standards Institute, 25 West 4
28、3rd Street, Fourth Floor, New York, NY 10036. Both publications available from National Academy of Sciences, 500 Fifth Street N.W., Washington, DC 20418.ix (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the ce
29、rtifier. A NSI /AW WA C303 does not address additives requirements. Thus, users of this standard should consult the appropriate state or local agency having jurisdiction in order to Determine additives requirements, including applicable standards. 1. Determine the status of certifications by parties
30、 offering to certify products 2. for contact with, or treatment of, drinking water. Determine current information on product certification. 3. Special Issues. II. Deflection control. II.A. The pipe described in this standard will safely support normal and usual external loads when installed accordin
31、g to appropriate and adequate bedding and backfilling procedures. To 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 within the limits contained in AWW
32、A Manual M9, Concrete Pressure Pipe. Other special issues. II.B. Other special issues, including field welding of pipe joints, are addressed in AWWA Manual M9. Use of This Standard. III. It is the responsibility of the user of an AWWA standard to determine that the products described in that standar
33、d are suitable for use in the particular application being considered. Purchaser Options and Alternatives. III.A. Purchasers are advised that, while this standard presents information on materials and procedures for manufacture of the pipe, it does not contain all of the engineering information need
34、ed to prepare a complete specification for a particular pipeline installation. A specific installation may require provisions more restrictive than those in the standards and most certainly will require additional design and installation features. AW WA M a nu a l M9 should be considered a supplemen
35、t to this standard. Material in the manual should not be regarded as superseding any portion of this standard. The purpose of AWWA Manual M9 is to provide information concerning some of the various subjects to be considered in, and the minimum standard of practice for, the design and installation of
36、 concrete pressure pipelines. The following items should be included by the purchaser: Standard usedthat is, ANSI/AWWA 1. C303, Concrete Pressure Pipe, Bar- Wrapped, Steel-Cylinder Type, of latest revision. Manner of storage and delivery, if required of the manufacturer. 2. x Working pressure, surge
37、 pressure, field-test pressure, external loading condi- 3. tions, and method of bedding and backfilling (Sec. 4.2.2). If detailed drawings and schedules are to be submitted for review (Sec. 4. 4.3.1 and 4.7.1). If the manufacturer is not permitted to supply pipe from inventory 5. (Sec. 4.3.1). If a
38、tabulated layout schedule will be required (Sec. 6. 4.3.2). Details of other federal, state or provincial, and local requirements (Sec. 4.4). 7. If any material or manufacturing test reports will be required (Sec. 8. 4.4, 5.1.2, and 5.2). Type of cement required if there is a preference (Sec. 9. 4.4
39、.1.1). If submission of the type and amount of admixtures will be required 10. (Sec. 4.4.4). If submission of manufacturers design calculations will be required 11. (Sec. 4.5.2.1). If submission for approval of welder qualifications (Sec. 12. 4.6.2 and 4.6.3), welding procedure specifications will b
40、e required (Sec. 4.6.3). If details of specials and fittings are to be provided by the manufacturer 13. (Sec. 4 . 7.1). If the purchaser desires to inspect the material, pipe, and fittings at the man- 14. ufacturers plant (Sec. 5.1.1). If any material or manufacturing test reports will be required (
41、Sec. 15. 5.1.4). If steel test specimens will be required (Sec. 16. 5.2.6). If an affidavit of compliance will be required (Sec. 17. 6.3). Modification to Standard. III.B. Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. Major Revisi
42、ons. IV. Major revisions made to the standard in this edition include the following: Tolerance allowance for cylinder to joint ring weld assembly was added 1. (Sec. 4.6.4.2.7). Fittings maximum circumferential stress under working pressure is now 2. defined. Also, a design guideline is now provided
43、for bends having radii less than 2 times the nominal pipe diameter (Sec. 4.7.2.1). This section also provides guidelines for permissible reinforcement to increase the stiffness of fittings (Sec. 4.7.2.1). Bar reinforcement wrap was added as an alternative to welded wire reinforce- 3. ment (Sec. 4.7.2.3).
