1、 Bolted Aboveground Thermosetting Fiberglass-Reinforced Plastic Panel-Type Tanks for Water Storage Effective Date: March 1, 2014. Approved by AWWA Board of Directors Jan. 19, 2014 Approved by American National Standards Institute Nov. 26, 2013 ANSI/AWWA D121a-14 Addendum to ANSI/AWWA D121-12 Standar
2、d For Dedicated to the Worlds Most Important Resource Revise the compressive strength requirement in Section 4.4.4.8 to read as follows:4.4.4.8 Compressive strength. The initial, unaged ultimate compressive strength of the FRP panel in the weakest direction when measured in accordance with Sec. 8.7.
3、1.6 shall be no less than 23,200 psi (160 MPa). Copyright 2014 American Water Works Association. All Rights Reserved. ANSI/AWWA D121-12 (First Edition) AWWA Standard Effective date: June 1, 2012. This first edition approved by AWWA Board of Directors Jan. 22, 2012. Approved by American National Stan
4、dards Institute March 27, 2012. 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 Bolted Aboveground Thermosetting Fiberglass- Reinforced Plastic
5、Panel-Type Tanks for Water Storage SM Copyright 2012 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 eng
6、ineering and administrative information normally contained in specifi- cations. 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 publication of a stan
7、dard does not constitute 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 codes of any governmental
8、 authority. AWWA standards are intended to represent a consensus of the water supply industry that the product described will provide satisfactory service. 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 Jo
9、urnal - American Water Works 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 substantial
10、ly 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 preclude anyone, whether that person has approved the standard or not
11、, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard. Ameri- can 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 Nationa
12、l 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. Caution n oti Ce : The American National Standards Institute (ANSI) approval date on the
13、 front cover of this standard 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 ANSI approva
14、l. Purchasers of American National Standards may receive current information on all standards by calling or writ- ing 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: 978-1-58321-888-4 eISBN-13
15、, electronic: 978-1-61300-146-2 ISBN-10, print: 1-58321-888-2 eISBN-10, electronic: 1-61300-146-0 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 s
16、ystem, except in the form of brief excerpts or quotations for review purposes, without the written permission of the publisher. Copyright 2012 by American Water Works Association Printed in USA Copyright 2012 American Water Works Association. All Rights Reserved. iii Committee Personnel The AWWA Sta
17、ndards subcommittee that developed this standard had the following personnel at the time: Owen Stevens, Chair General Interest Members P.A. Sharff, Simpson Gumpertz and Heger, Waltham, Mass. (AWWA) Producer Members S.D. Curran, Fiberglass Tank and Pipe Institute, Houston, Texas (AWWA) O. Stevens, Fi
18、ber Technology Corporation, Lorton, Va. (AWWA) The AWWA Standards Committee on Thermosetting Fiberglass-Reinforced Plastic Tanks, which reviewed and approved this standard, had the following personnel at the time of approval: Phillip A. Sharff, Chair General Interest Members J.J. Cusack Jr., Bryant
19、Associates Inc., Boston, Mass. (AWWA) M.W. Grimm,* Standards Council Liaison, The Cadmus Group Inc., Happy Valley, Ore. (AWWA) R. Lewandowski, Corrosion Resistant Composites, Timonium, Md. (AWWA) D.M. Flancher,* Standards Engineer Liaison, AWWA, Denver, Colo. (AWWA) P.A. Sharff, Simpson Gumpertz and
20、 Heger, Waltham, Mass. (AWWA) C.J. Waters, CDM, Tampa, Fla. (AWWA) Producer Members S.D. Curran, Fiberglass Tank and Pipe Institute, Houston, Texas (AWWA) J. Small, Darco Inc., Bennett, Colo. (AWWA) S.A. Khan, Amiantit Fiberglass Industries Ltd., Dammam, Saudi Arabia (AWWA) O. Stevens, Fiber Technol
21、ogy Corporation, Lorton, Va. (AWWA) User Members C.J. Patla, Connecticut Water Service Inc., Clinton, Conn. (NEWWA) C.N. Strother, Denver Water, Denver, Colo. (AWWA) * Liaison Alternate Copyright 2012 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 201
22、2 American Water Works Association. All Rights Reserved. v Contents All AWWA standards follow the general format indicated subsequently. Some variations from this format may be found in a particular standard. SEC. PAGESEC. PAGE Foreword I. Introduction. ix I.A. Background ix I.B. History . ix I.C. A
23、cceptance . ix II. Special Issues. x II.A. Purchase x II.B. Design and Construction . xi II.C. Manufacturing Method xi II.D. Foundations . xi II.E. Annual Inspection and Maintenance xi II.F. Disinfection Procedures . xi II.G. Recommended Items to Be Furnished by the Purchaser and Manufacturer xi III
24、. Use of This Standard . xii III.A. Purchaser Options and Alternatives . xii III.B. Information to Be Furnished by the Manufacturer or Constructor . xiii III.C. Items for Consideration by the Purchaser . xiii III.D. Modification to Standard xv IV. Major Revisions . xv V. Comments xv Standard 1 Gener
25、al 1.1 Scope 1 1.2 Purpose . 2 1.3 Application 2 1.4 Drawings to Be Furnished . 2 2 References 2 3 Definitions . 5 4 Materials 4.1 General . 6 4.2 Bolts for Panel Connections 6 4.3 Foundation-Reinforcing Steel 7 4.4 FRP Panels 7 4.5 Structural Shapes 9 4.6 Castings 9 4.7 Forgings 9 4.8 Galvanized Co
26、atings . 9 4.9 Structural Bolts for Steel Footing Connection . 9 4.10 Electrodes 9 4.11 Gaskets and Sealants . 9 5 Tank Design 5.1 Design Methodology . 10 5.2 Design Loads 11 Copyright 2012 American Water Works Association. All Rights Reserved. vi 5.3 Seismic Design 12 5.4 Strength and Resistance of
27、 FRP Panels and Connections 28 5.5 Strength of Welds 28 5.6 Foundation Anchor Bolts 28 5.7 Roof Panels . 29 5.8 Foundation Design 33 6 Sizing of Tanks 34 7 Accessories for Tanks 7.1 Manways . 34 7.2 Pipe Connections 34 7.3 Overflow . 35 7.4 Ladders . 35 7.5 Safety Devices . 36 7.6 Vents . 36 7.7 Add
28、itional Accessories and Exceptions . 36 8 Fabrications 8.1 Compression Molding . 36 8.2 Steel FootingsWelded Work . 36 8.3 Assembly and Subassemblies . 37 8.4 Welds 37 8.5 Manufacturing Tolerances . 37 8.6 Shipping 37 8.7 Quality Standards and Control . 37 9 Construction 9.1 General . 40 9.2 Foundat
29、ion Installation . 41 9.3 Anchor Bolts . 41 9.4 Anchor Bolt Placement and Tolerance . 41 9.5 Steel Footing . 41 9.6 Types of Joint 42 9.7 Bolting 42 9.8 Bolt Tightening Requirements 42 9.9 Gaskets and Sealants . 43 9.10 Cleanup 43 9.11 Marking 43 9.12 Protection 43 10 Inspection and Testing 10.1 FRP
30、 Panel Damage . 43 10.2 Testing . 44 10.3 Disposal of Test Water . 44 10.4 Repair of Leaks 44 10.5 Disinfecting . 44 10.6 Inspection and Maintenance 44 Appendixes A Metric (SI) Equivalents 45 B Seismic Analysis Example 47 Figures 1 Curves for Obtaining Factors W i /W Land W c /W Lfor the Ratio L/H L
31、23 2 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/H L(EBP) 24 3 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/H L(IBP) . 25 Copyright 2012 American Water Works Association. All Rights Reserved. vii 4 Curve for Obtaining the Factor 2 p/ l for the Ratio L/H L . 2
32、6 5 Curve for Obtaining the Normalized Wetted Width, X f /0.50 L, for the Ratio d a /d max30 6 Wetted Width on the Roof When the Required Freeboard Is Greater Than the Actual Freeboard 31 7 Elevation of Concrete Foundation 33 8 Sealant Detail at Panel Intersections 42 B.1 Given Tank Dimensions 47 B.
33、2 Curve for Obtaining the Factor 2 p/ l .for the Ratio L/H L49 B.3 Curve for Obtaining the Normalized Wetted Width, X f /0.50 L, for the Ratio d a /d max50 B.4 Curves for Obtaining Factors W i /W Land W C /W Lfor the Ratio L/H L51 B.5 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/
34、H L53 B6 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/H L54 B.7 Curve for Obtaining the Factor 2 p/ l.for the Ratio L/H L59 B.8 Curve for Obtaining the Normalized Wetted Width, X f /0.50 L, for the Ratio d a /d max60 B.9 Curves for Obtaining Factors W i /W Land W c /W Lfor the Ra
35、tio L/H L61 B.10 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/H L63 B.11 Curves for Obtaining Factors h i /H Land h c /H Lfor the Ratio L/H L. 64 Tables 1 Physical Requirement for Sealant Material 10 2 Load Duration for Loading Ty pes. 12 3 Nut Rotation From Snug-Tight Condition
36、43 A.1 Metric (SI) Conversion Factors. 45 Copyright 2012 American Water Works Association. All Rights Reserved. This page intentionally blank. Copyright 2012 American Water Works Association. All Rights Reserved. ix Foreword This foreword is for information only and is not a part of ANSI * /AWWA D12
37、1. I. Introduction. I.A. Background. This standard covers bolted aboveground thermosetting fiberglass-reinforced plastic (FRP) panel-type tanks for water storage and is based on more than a decade of accumulated knowledge and experience from installations worldwide, as well as engineering procedures
38、 and analyses generally accepted in the tank industry. Bolted FRP panel-type tanks are typically field assembled from factory- produced modular panel units. Tanks ranging in size from 260 gal to 2.5 mil gal have been constructed. I.B. History. Thi s is the first edition of ANSI/AWWA D121. In June 20
39、07 , the Standards Council approved this new standard and assigned it to Standards Committee 370, Thermosetting Fiberglass-Reinforced Plastic Tanks. A subcommittee was formed to prepare this standard. Applicable publications, such as ANSI/AWWA D120, ANSI/ AWWA D103, BS EN 13280:2001, SS245:1995, and
40、 JIS R3411-3417 were consulted in forming this standard, and seismic design procedures are based on current practice as reflected in ASCE/SEI 7-05, ANSI/AWWA D110-04, ACI 350.3-06, and Technical Information Document TID 7024, chapter 6 and appendix F, US Atomic Energy Commission. This first edition
41、was approved by the AWWA Board of Directors on Jan. 22, 2012. 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 pr
42、ogram 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 Environmental Managers (COSHEM). The American Water Works Association and the Association of State Drinking
43、 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 health * Ame
44、rican National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036. Persons outside the United States should contact the appropriate authority having jurisdiction. Copyright 2012 American Water Works Association. All Rights Reserved. x effects of products and drinking water ad
45、ditives 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 under the direction
46、of NSF, NSF * /ANSl 60, Drink- ing 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 or local ag
47、ency. 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 jurisdiction. Accreditation of certi- fication organizations may vary f
48、rom 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 unspecified list of “unregulated
49、contaminants” 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 D121 does not address additives requirements. Users of this stan- dard 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 all parties offering to certify prod- ucts for contact w
