1、AWWA Standard SM Thickness Design of Ductile-Iron Pipe Effective date: Sept. 1, 2014. First edition approved by AWWA Board of Directors June 23, 1965. This edition approved June 8, 2014. Approved by American National Standards Institute May 12, 2014. ANSI/AWWA C150/A21.50-14 (Revision of ANSI/AWWA C
2、150/A21.50-08) 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 administrative information normally contained in specifications. The AWWA standa
3、rds 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 constitute endorsement of any product or product type, nor does AWWA test, cert
4、ify, 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 codes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry
5、 that the product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice of action will be placed in the Official Notice section of Journal - American Water Works Association. The action becomes effective on the first day of the month fol- lowin
6、g 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 and provisions. An American National Standard is intended as a guide to aid the m
7、anufacturer, 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, marketing, purchasing, or using products, processes, or procedures not conforming to
8、 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 - aged to state on their own responsibility in advertising and promotional materials o
9、r 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 standard indicates completion of the ANSI approval process. This American National S
10、tandard 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 ANSI approval. Purchasers of American National Standards may receive current information on all standards by calling
11、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: 978-1-62576-034-0 eISBN-13, electronic: 978-1-61300-295-7DOI: http:/dx.doi.org/10.12999/AWWA.C150.14 All rights reserved. No part of
12、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 written permission of the publisher. Co
13、pyright 2014 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, either electronic or photocopied, is illegal and hinders AWWAs mission to su
14、pport the water community. This AWWA content is the product of thousands of iii Committee Personnel Subcommittee No. 1, Pipe, which reviewed this standard, had the following personnel at the time: Maury D. Gaston, Chair General Interest Members M.B. Horsley, Horsley Engineering LLC, Overland Park, K
15、an. (AWWA) E.W. Misichko, Underwriters Laboratories, Northbrook, Ill. (AWWA) J.R. Plattsmier, HDR Engineering Inc., Denver, Colo. (AWWA) E.S. Ralph,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) P.A. Selig, Vestavia, Ala. (DIPRA) K.E. Wilson, Atkins, Tampa, Fla. (AWWA) L.C. Yates, McGoodwi
16、n, Williams however, it continues to maintain its representation on the AWWA Committee A21. The present scope of AWWA Committee A21 activity is the development of stan- dards and manuals addressing ductile-iron pressure pipe for water and other liquids, and ductile-iron and gray-iron fittings for us
17、e with this pipe. These standards and manuals include design, dimensions, materials, coatings, linings, joints, accessories, and methods of inspection and testing. * American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. ASTM International, 100 Barr Harbor Driv
18、e, West Conshohocken, PA 19428. x The work of AWWA Committee A21 is conducted by subcommittees. The scope of Subcommittee 1, Pipe, includes the periodic review of current A21 standards for pipe, the preparation of revisions and new standards when needed, as well as other matters pertaining to pipe s
19、tandards. The first edition of C150/A21.50, American National Standard for the Thickness Design of Ductile-Iron Pipe, was issued in 1965, and revisions were issued in 1971, 1976, 1981, 1991, 1996, 2002, and 2008. The standard was reaffirmed without revision in 1986. This edition was approved by the
20、AWWA Board of Directors on June 8, 2014. I.C. Acceptance. 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 direct and
21、indirect drinking water additives. Other members of the original consortium included the Water Research Foundation (formerly AwwaRF) and the Conference of State Health and Environmental Managers (COSHEM). The American Water Works Association and the Association of State Drinking Water Administrators
22、 (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 health effects of products and d
23、rinking water additives from such products, state and local agencies may use various references, including 1. An advisory program formerly administered by USEPA, Office of Drinking Water, discontinued on Apr. 7, 1990. 2. Specific policies of the state or local agency. 3. Two standards developed unde
24、r the direction of NSF, NSF/ANSI 60, Drinking Water Treatment ChemicalsHealth Effects, and NSF/ANSI 61, Drinking Water System ComponentsHealth Effects. 4. Other references, including AWWA standards, Food Chemicals Codex, Water Chemicals Codex, and other standards considered appropriate by the state
25、or local agency. * Persons outside the United States should contact the appropriate authority having jurisdiction. NSF International, 789 North Dixboro Road, Ann Arbor, MI 48113. Both publications available from National Academy of Sciences, 500 Fifth Street, N. W., Washington, DC 20001. xi Various
26、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 jurisdiction. Accreditation of certi- fication organizations may vary from jurisdicti
27、on 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 unspecified list of “unregulated contaminants”
28、are based on toxicity testing guidelines (noncarcinogens) and risk characterization methodology (carcinogens). Use of Annex A procedures may not always be identical, depending on the certifier. ANSI/AWWA C150 does not address additives requirements. Thus, users of this standard should consult the ap
29、propriate 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 contact with, or treatment of, drinking water. 3. Determine current information o
30、n product certification. II. Special Issues. Currently, there are no special issues related to this standard. III. Use of This Standard. It is the responsibility of the user of an AWWA standard to determine that the products described in that standard are suitable for use in the particular applicati
31、on being considered. III.A. Purchaser Options and Alternatives. The following items should be provided by the purchaser: 1. Standard usedthat is, ANSI/A WWA C1 50/A21.50, Standard for Thickness Design of Ductile-Iron Pipe, of latest revision. 2. As noted in Sec. I.A of the foreword, ANSI/AWWA C151/A
32、21.51 contains options that must be addressed by the purchaser in response to site-specific require- ments for ductile-iron pipe. III.B. Modification to Standard. Any modification to the provisions, definitions, or terminology in this standard must be provided by the purchaser. I V. Major Revisions. Major revisions made to the standard in this edition include the following: 1. The m etric identifiers provided in the standard were revised to reflect nominal sizes. 2. The references in Section 2 were updated with current titles.
