1、AWWA Standard SM Rubber-Gasket Joints for Ductile-Iron Pressure Pipe and Fittings Effective date: April 1, 2017. First edition approved by AWWA Board of Directors July 16, 1953. This edition approved Jan. 14, 2017. Approved by American National Standards Institute Oct. 11, 2016. ANSI/AWWA C111/A21.1
2、1-17 (Revision of ANSI/AWWA C111/A21.11-12) 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 t
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12、 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 support the water community. This AWWA content is the product of thousands of ISBN-13, print: 978-1-58321-210-8 eIS
13、BN-13, electronic: 978-1-61300-409-8 DOI: http:/dx.doi.org/10.12999/AW WA.C111.17 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
14、 the form of brief excerpts or quotations for review purposes, without the written permission of the publisher. Copyright 2017 by American Water Works Association Printed in USA Copyright 2017 American Water Works Association. All Rights Reserved. iii Committee Personnel Subcommittee 2, Joints for P
15、ipe and Fittings, which reviewed and developed this standard, had the following personnel at the time: Larry Dunn, Chair General Interest Members S.M. Passarelli,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) P.A. Selig, Consultant, Birmingham, Ala. (AWWA) Producer Members L.R. Dunn, U.S.
16、Pipe (2) inclusion of reduced ductile-iron mechanical-joint pipe bell thicknesses that are compatible with pipe barrel thicknesses; (3) inclusion of tee-head bolts with reduced shank diameters that are properly sized to accept rolled threads; (4) minimum elonga- tion increased to 5 percent for ducti
17、le-iron glands; (5) deletion of the 2-in. and 2-in. sizes; and (6) marking requirements for the tee-head bolts and nuts. A 1984 addendum was issued to increase the thread length on 5/8-in. 3-in. and -in. 3-in. tee-head bolts by in. and to permit polygon-shaped bells on fittings. The major revisions
18、in the 1985 edition included the addition of Sec. 11-1.3, Modi - fications to Push-on and Mechanical Joints; revision of Sec. 11-2.5 defining the manu- facturer as the party that produces joints according to this standard; and the addition Copyright 2017 American Water Works Association. All Rights Reserved.
