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This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.ANSI/AWWA D100-11(Revision of ANSI/AWWA D100-05)The Authoritative Resource on Safe Water AWWA StandardWelded CarbonSteel Tanks forWater Storage SMEffective date: July 1, 2011.First edition approved by AWWA Board of Directors June 23, 1991.This edition approved Jan. 23, 2011.Approved by American National Standards Institute April 8, 2011.6666 West Quincy AvenueAdvocacyDenver, CO 80235-3098CommunicationsT 800.926.7337Conferenceswww.awwa.orgEducation and TrainingScience and TechnologySectionsCopyright 2011 American Water Works Association. All Rights Reserved.

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.AWWA StandardThis document is an American Water Works Association (AWWA) standard. It is not a specification. AWWA standards describeminimum 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 each optionalfeature is specified by the user, the product or service is not fully defined. AWWA publication of a standard does not constituteendorsement of any product or product type, nor does AWWA test, certify, or approve any product. The use of AWWA standardsis entirely voluntary. This standard does not supersede or take precedence over or displace any applicable law, regulation, orcodes of any governmental authority. AWWA standards are intended to represent a consensus of the water supply industry thatthe product described will provide satisfactory service. When AWWA revises or withdraws this standard, an official notice ofaction will be placed on the first page of the classified advertising section of Journal AWWA. The action becomes effective onthe first day of the month following the month of Journal AWWA publication of the official notice.American National StandardAn American National Standard implies a consensus of those substantially concerned with its scope and provisions. An AmericanNational Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of anAmerican National Standard does not in any respect 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 National Standards are subject to periodic review, and users are cautioned to obtain the latest editions. Producers of goodsmade in conformity with an American National Standard are encouraged to state on their own responsibility in advertising andpromotional materials or on tags or labels that the goods are produced in conformity with particular American National Standards.Caution Notice: The American National Standards Institute (ANSI) approval date on the front cover of this standard indicatescompletion of the ANSI approval process. This American National Standard may be revised or withdrawn at any time. ANSIprocedures require that action be taken to reaffirm, revise, or withdraw this standard no later than five years from the date ofpublication. Purchasers of American National Standards may receive current information on all standards by calling or writingthe American National Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY 10036; (212) 642-4900, ore-mailing info@ansi.org. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic ormechanical, including photocopy, recording, or any information or retrieval system, except in the form of brief excerpts orquotations for review purposes, without the written permission of the publisher.Copyright 2011 by American Water Works AssociationPrinted in USAiiCopyright 2011 American Water Works Association. All Rights Reserved.

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.Committee PersonnelThe Standards Committee on Steel Elevated Tanks, Standpipes, and Reservoirs, which reviewedand approved this standard, had the following personnel at the time of approval:Stephen W. Meier, ChairGeneral Interest MembersD.M. Algranti, Albert A. Webb Associates, Riverside, Calif.E. Darrimon, Bay Area Coating Consultant Service Inc., Denair, Calif.W.J. Dixon, Dixon Engineering Inc., Lake Odessa, Mich.F.S. Kurtz,* Standards Engineer Liaison, AWWA, Denver, Colo.S.W. Meier, Tank Industry Consultants, Indianapolis, Ind.J.I. Strand, Short Elliott Hendrickson Inc., Chippewa Falls, Wis.B.M. Shepherd,* Standards Council Liaison, Claremont, Calif.C.C. Sundberg, CH2M HILL, Issaquah, Wash.R.S. Wozniak, Bow Tech Ltd., Batavia, Ill. WWA)Producer MembersJ.W. Davis, Tnemec Company Inc., Kansas City, Mo.B.E. Kromer, Tank Builders Inc., Euless, TexasS. Lamb, Nickel Institute, Huntington, W.V.G.A. Larson, CB&I Inc., Clive, IowaK. McGuire, CST Storage, Parsons, Kan.L.D. Scott,† CB&I Inc., San Luis Obispo, Calif.D.L. Stilger, Caldwell Tanks Inc., Louisville, Ky.(AWWA)(AWWA)(AWWA)(AWWA)(AWWA)(AWWA)(AWWA)User MembersJ. Camarena, East Bay Municipal Utility District, Oakland, Calif.T.M. Dawson, Emerald Coast Utilities Authority, Pensacola, Fla.M.W. Griffin,† Missouri–American Water Company, St. Louis, Mo.C.P. Harder, City of Fort Worth, Fort Worth, TexasE.J. King, Connecticut Water Company, Clinton, Conn.* Liaison, nonvoting† AlternateiiiCopyright 2011 American Water Works Association. All Rights Reserved.(AWWA)(AWWA)(AWWA)(AWWA)(AWWA)

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.J.L. Ortiz, San Francisco Public Utilities Commission, San Francisco, Calif.J.P. Scott, New Jersey–American Water Company, Delran, N.J. ivCopyright 2011 American Water Works Association. All Rights Reserved.(AWWA)(AWWA)

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.ContentsAll AWWA standards follow the general format indicated subsequently. Some variations from thisformat may be found in a particular standard.SEC.PAGESEC.PAGEForewordIIntroduction. xiii3.3Combined Stresses. 213.4Allowable Compressive Stresses forColumns, Struts, and Shells. 243.5Shell Girder, Intermediate Stiffeners,and Compression Rings. 37I.ABackground. xiiiI.BHistory. xiiiI.CAcceptance. xviiiIISpecial Issues. xix3.6Roofs. 39IIIUse of This Standard. xix3.7Cylindrical Shell Plates. 41III.A Purchaser Options andAlternatives. xix3.8Anchorage. 413.9Corrosion Allowance andProtection. 47III.B Information to Be ProvidedWith Bid. xxvii3.10 Minimum Thickness and Size. 47III.C Modification to Standard. xxvii3.11 Joints. 49IVMajor Revisions. xxvii3.12 Weld Design Values. 49VComments. xxvii3.13 Reinforcement Around Openings. 50 3.14 Equivalent Metric Equations. 52Standard4Sizing and Design of Elevated Tanks4.1Standard Capacities. 534.2Heights for Elevated Tanks. 544.3Standard Head Range. 544.4Cross-Braced MulticolumnElevated Tanks. 54Materials4.5Tank Plates. 562.1General. 74.6Pedestal Tanks. 572.2Material Specifications. 74.7Tank Stability Against Overturning. 573General Design4.8Lateral Load Distribution. 573.1Design Loads. 105Accessories for Elevated Tanks3.2Unit Stresses. 205.1Steel Riser. 571General1.1Scope. 11.2Definitions. 21.3Drawings to Be Provided. 21.4References. 32vCopyright 2011 American Water Works Association. All Rights Reserved.

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.5.2Pipe Connection. 585.3Overflow. 58Tubular Column andStrut Sections. 695.4Access. 598.10 Steel Risers. 695.5Vent. 618.11 Roof Plates. 695.6Antennas and RelatedEquipment. 618.12 Maximum Thickness of Materialto Be Welded. 705.7Galvanic Corrosion. 616Sizing of Ground-SupportedStandpipes and Reservoirs. 618.13 Lap Restrictions for WeldedLap Joints. 707Accessories for Ground‑SupportedStandpipes and Reservoirs8.15 Minimum Length of Welds. 717.1Flush-Type Cleanouts. 627.2Pipe Connections. 628.17 Corrosion Protection. 717.3Overflow. 627.4Access. 63 8.98.14 Minimum Size of Fillet andSeal Welds. 708.16 Intermittent Welding. 719Shop Fabrication9.1Workmanship. 719.2Straightening. 729.3Finish of Plate Edges—WeldedWork. 729.4Rolling. 727.5Vent. 647.6Antennas and Related Equipment. 657.7Galvanic Corrosion. 658Welding9.5Double-Curved Plates. 738.1Definitions and Symbols. 659.6Columns. 738.2Qualification of WeldingProcedures, Welders, andWelding Operators. 659.7Shop Assembly. 739.8High-strength Anchor Bolts. 739.9Shipping. 7310Erection8.3Weld Joint Records. 668.4Butt Joints. 678.5Lap Joints. 678.6Flat Tank Bottoms Resting Directlyon Grade or Foundation. 688.7Shell‑to‑Bottom Joint. 688.8Shell Plates. 6910.1 Welds. 7310.2 Preparation of Surfaces toBe Welded. 7410.3 Preheating Welded Joints. 7510.4 Low‑Hydrogen Electrodes andWelding Processes. 76viCopyright 2011 American Water Works Association. All Rights Reserved.

This is a preview of "AWWA D100-11". Click here to purchase the full version from the ANSI store.12.4 Foundations for Cross-BracedMulticolumn Tanks. 9110.5 Tack Welds. 7610.6 Tank Assembly. 7612.5 Foundations for Single‑PedestalTanks. 9210.7 Matching Plates. 7910.8 Grouting of Column, Riser, andSingle‑Pedestal Bases forElevated Tanks. 7912.6 Foundations for Ground-SupportedFlat‑Bottom Tanks. 9312.7 Detail Design of Foundations. 9610.9 High-Strength Anchors. 801112.8 Concrete Design, Materials, andConstruction. 97Inspection and Testing11.1 General. 8012.9 Backfill. 9711.2 Inspection Report. 801311.3 Welders’ Credentials. 80Seismic Design of Water StorageTanks11.4 Inspection of Welded Joints. 8013.1 General. 9811.5 Number and Location of13.2 Design Earthquake GroundMotion. 100Radiographs for Butt-Weld Jointsin Tank Shells, Load‑BearingRisers, and Single‑PedestalColumns. 84 13.3 Cross-Braced, Column-SupportedElevated Tanks. 13513.4 Pedestal-Type Elevated Tanks . 13711.6 Procedures for Inspection ofWelded‑Shell Butt Joints—13.5 Ground-Supported Flat-BottomTanks. 138Radiographic Testing. 8513.6 Piping Connections . 14911.7 Procedure for Inspection of13.7 Foundation Design forGround-SupportedFlat-Bottom Tanks. 151Groove Welds in TensionMember Bracing byUltrasonic Inspection. 8813.8 Equivalent Metric Equations. 15111.8 Inspection by Air Carbon ArcGouging. 881411.9 Repair of Defective Welds. 8814.1 Alternative Design Basis. 15311.10 Testing. 8914.2 Materials. 1551214.3 General Design. 161Foundation DesignAlternative Design Basis forStandpipes and Reservoirs1

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 specifi-