AS 1101.3—1987

Australian Standard

GRAPHICAL SYMBOLS FORGENERAL ENGINEERING

Part 3 : WELDING AND NON-DESTRUCTIVE EXAMINATION

This Australian standard was prepared by Committee WD/1, Welding Definitions andSymbols. It was approved on behalf of the Council of the Standards Association ofAustralia on 12 November 1986 and published on 6 February 1987.

The following interests are represented on Committee WD/1:

Australian Welding InstituteAustralian Welding Research AssociationBureau of Steel Manufacturers of AustraliaConfederation of Australian IndustryCSIRO, Division of Manufacturing TechnologyDepartment of DefenceElectricity Supply Association of AustraliaMelbourne and Metropolitan Tramways BoardMetal Trades Industry Association of AustraliaRailways of Australia CommitteeRoyal Melbourne Institute of Technology

Review of Australian Standards.To keep abreast of progress in industry, Australian Standards are subjectto periodic review and are kept up to date by the issue of amendments or new editions as necessary. It isimportant therefore that Standards users ensure that they are in possession of the latest edition, and anyamendments thereto.

Full details of all Australian Standards and related publications wil l be found in the Standards AustraliaCatalogue of Publications; this information is supplemented each month by the magazine ‘The AustralianStandard’, which subscribing members receive, and which gives details of new publications, new edit ionsand amendments, and of withdrawn Standards.

Suggestions for improvements to Australian Standards, addressed to the head off ice of Standards Australia,are welcomed. Noti fication of any inaccuracy or ambiguity found in an Australian Standard should be madewithout delay in order that the matter may be investigated and appropriate action taken.

This Standard was issued in draft form for comment as DR 85138.

AS 1101.3—1987

Australian Standard

GRAPHICAL SYMBOLS FORGENERAL ENGINEERING

Part 3 : WELDING AND NON-DESTRUCTIVEEXAMINATION

First published (as AS Z6) . . . . . . . . . . . . . . . . . 1955Revised . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1969AS 1101, Part 3 fi rst published . . . . . . . . . . . . . . . 1979Second edition . . . . . . . . . . . . . . . . . . . . . . . . . . 1987

PUBLISHED BY STANDARDS AUSTRALIA(STANDARDS ASSOCIATION OF AUSTRALIA)1 THE CRESCENT, HOMEBUSH, NSW 2140

ISBN 0 7262 4462 7

AS 1101.3—1987 2

PREFACE

This edition of this standard was prepared by the Association’s Committee on WeldingDefinitions and Symbols, to supersede AS 1101, Graphical Symbols for GeneralEngineering, Part 3—1979—Symbols for Welding. It is generally based onANSI/AWS A2.4-79, Symbols for Welding and Nondestructive Testing, and thepermission of the American Welding Society Inc. to use their standard isacknowledged.

The standard provides a scheme whereby complete details of welds and welded jointscan be delineated on drawings. A separate section has been included establishingsymbols for use on drawings to specify requirements for non-destructive examinationfor determining the soundness of materials.

The method for symbolic representation of welds on engineering drawings used in thisstandard is consistent with the ‘third angle’ method of projection, which is thepreferred method given in AS 1100, Technical Drawing, Part 101—General Principles.It should be noted, however, that the scheme is equally appropriate to drawings inwhich the ‘first angle’ method of projection is used.

The committee noted the practice currently adopted in ISO 2553, Welds—SymbolicRepresentation on Drawings, in regard to the position of the symbols on drawings, vizthe dual reference line, and felt that this situation should not be carried over into thisstandard. Therefore, the practice of using one continuous reference line remainsunaltered in this edition.

Illustrations used with the text are intended only to show how symbols may be usedto convey welding or testing information and do not necessarily represent good oraccepted design practice.

Copyright STANDARDS AUSTRALIA

Users of Standards are reminded that copyright subsists in all Standards Australia publications and software. Except where theCopyright Act allows and except where provided for below no publications or software produced by Standards Australia may bereproduced, stored in a retrieval system in any form or transmitted by any means without prior permission in wri ting fromStandards Australia. Permission may be conditional on an appropriate royalty payment. Requests for permission and information oncommercial software royalties should be directed to the head off ice of Standards Australia.

Standards Australia wil l permit up to 10 percent of the technical content pages of a Standard to be copied for useexclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Australia.

Standards Australia wil l also permit the inclusion of its copyright material in computer software programs for no royaltypayment provided such programs are used exclusively in-house by the creators of the programs.

Care should be taken to ensure that material used is from the current edition of the Standard and that it is updated whenever theStandard is amended or revised. The number and date of the Standard should therefore be clearly identif ied.

The use of material in print form or in computer software programs to be used commercially, with or without payment, or incommercial contracts is subject to the payment of a royalty. This policy may be varied by Standards Australia at any time.

3 AS 1101.3—1987

CONTENTS

PageSECTION 1. SCOPE AND GENERAL

1.1 SCOPE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51.2 REFERENCED DOCUMENTS . . . . . . . . . . . . . . . . . . . . . . . . 51.3 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SECTION 2. BASIC PRINCIPLES2.1 BASIC SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.2 BASIC TYPES OF JOINTS AND WELDS . . . . . . . . . . . . . . . 72.3 GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SECTION 3. SYMBOLS FOR FILLET WELDS3.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 233.2 SIZE OF FILLET WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . 233.3 LENGTH OF FILLET WELDS . . . . . . . . . . . . . . . . . . . . . . . 233.4 EXTENT OF FILLET WELDING . . . . . . . . . . . . . . . . . . . . . 233.5 DIMENSIONING OF INTERMITTENT FILLET WELDING . . 263.6 TERMINATION OF INTERMITTENT FILLET WELDING . . . 263.7 COMBINATION OF INTERMITTENT AND CONTINUOUS

FILLET WELDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 263.8 FILLET WELDS IN HOLES AND SLOTS . . . . . . . . . . . . . . . 263.9 SURFACE FINISH AND CONTOUR OF FILLET WELDS . . . 263.10 SKEWED JOINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

SECTION 4. SYMBOLS FOR BUTT WELDS4.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.2 DEPTH OF PREPARATION AND DESIGN THROAT THICK-

NESS OF BUTT WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . 294.3 JOINT PREPARATION DIMENSIONS . . . . . . . . . . . . . . . . . 364.4 SURFACE FINISH AND CONTOUR OF BUTT WELDS . . . . 364.5 BACKING RUN OR BACKING WELDS . . . . . . . . . . . . . . . . 434.6 JOINT WITH BACKING . . . . . . . . . . . . . . . . . . . . . . . . . . . 444.7 JOINT WITH SPACER . . . . . . . . . . . . . . . . . . . . . . . . . . . . 444.8 CONVENTION FOR BACK GOUGING AFTER WELDING

ONE SIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

SECTION 5. SYMBOLS FOR SURFACING5.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 485.2 USE OF SURFACING SYMBOL . . . . . . . . . . . . . . . . . . . . . 485.3 SIZE (THICKNESS) OF SURFACES BUILT UP BY WELDING 485.4 EXTENT, LOCATION, AND ORIENTATION OF SURFACES

BUILT UP BY WELDING . . . . . . . . . . . . . . . . . . . . . . . . . . 485.5 SURFACING A WELD FACE . . . . . . . . . . . . . . . . . . . . . . . 48

SECTION 6. SYMBOLS FOR FLANGE WELDING6.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.2 EDGE-FLANGE WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . 506.3 CORNER-FLANGE WELDS . . . . . . . . . . . . . . . . . . . . . . . . . 506.4 DIMENSIONS OF FLANGE WELDS . . . . . . . . . . . . . . . . . . 506.5 MULTIPLE-JOINT FLANGE WELDS . . . . . . . . . . . . . . . . . . 50

AS 1101.3—1987 4

Page

SECTION 7. SYMBOLS FOR PLUG WELDING7.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 547.2 SIZE OF PLUG WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . . 547.3 ANGLE OF COUNTERSINK . . . . . . . . . . . . . . . . . . . . . . . . 547.4 DEPTH OF FILLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 547.5 SPACING OF PLUG WELDS . . . . . . . . . . . . . . . . . . . . . . . . 547.6 SURFACE CONTOUR OF PLUG WELDS . . . . . . . . . . . . . . . 54

SECTION 8. SYMBOLS FOR SLOT WELDING8.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 578.2 DEPTH OF FILLING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 578.3 DETAILS OF SLOT WELDS . . . . . . . . . . . . . . . . . . . . . . . . 578.4 SURFACE FINISH AND CONTOUR OF SLOT WELDS . . . . . 59

SECTION 9. SYMBOLS FOR SPOT WELDING9.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 609.2 SIZE AND STRENGTH OF SPOT WELDS . . . . . . . . . . . . . . 609.3 SPACING OF SPOT WELDS . . . . . . . . . . . . . . . . . . . . . . . . 609.4 EXTENT OF SPOT WELDING . . . . . . . . . . . . . . . . . . . . . . . 609.5 NUMBER OF SPOT WELDS . . . . . . . . . . . . . . . . . . . . . . . . 609.6 GROUPED SPOT WELDS . . . . . . . . . . . . . . . . . . . . . . . . . . 649.7 FLUSH SPOT WELDED JOINTS . . . . . . . . . . . . . . . . . . . . . 649.8 MULTIPLE-JOINT SPOT WELDS . . . . . . . . . . . . . . . . . . . . 64

SECTION 10. SYMBOLS FOR SEAM WELDING10.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6510.2 SIZE AND STRENGTH OF SEAM WELDS . . . . . . . . . . . . . 6510.3 LENGTH OF SEAM WELDS . . . . . . . . . . . . . . . . . . . . . . . 6510.4 DIMENSIONING OF INTERMITTENT SEAM WELDS . . . . . 6510.5 ORIENTATION OF SEAM WELDS . . . . . . . . . . . . . . . . . . . 6510.6 FLUSH SEAM WELDED JOINTS . . . . . . . . . . . . . . . . . . . . 6610.7 MULTIPLE-JOINT SEAM WELDS . . . . . . . . . . . . . . . . . . . . 66

SECTION 11. SYMBOLS FOR BRAZED JOINTS11.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6911.2 JOINT PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

SECTION 12. SYMBOLS FOR NON-DESTRUCTIVE EXAMINATION12.1 BASIC SYMBOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7312.2 GENERAL PROVISIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 7312.3 METHODS OF SPECIFYING EXTENT OF NON-DESTRUCTIVE

EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

APPENDICESA ABBREVIATIONS OF TERMS FOR WELDING AND APPLIED

PROCESSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77B DESIGN OF STANDARD SYMBOLS . . . . . . . . . . . . . . . . . . . 79C APPLICATION DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

5 AS 1101.3—1987

STANDARDS ASSOCIATION OF AUSTRALIA

Australian Standard

for

GRAPHICAL SYMBOLS FOR GENERAL ENGINEERING

PART 3—WELDING AND NON-DESTRUCTIVE EXAMINATION

SECTION 1. SCOPE AND GENERAL

1.1 SCOPE.This standard describes symbols whichprovide the means of placing complete weldinginformation on drawings. It covers the details andapplication of symbols related to various weldingprocesses (including brazing), and non-destructiveexamination.

Appendix A gives a listing of abbreviations normallyused for welding and allied processes. Appendix Bshows the design of standard symbols, whileAppendix C gives a typical example for the use ofsymbols on structural drawings.

1.2 REFERENCED DOCUMENTS. The followingstandards are referred to in this standard:

AS 2536 Surface Texture

AS 2812 Welding, Brazing and Cutting of Metals —Glossary of Terms

1.3 DEFINITIONS. For the purpose of thisstandard, the definitions given in AS 2812 shallapply.

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AS 1101.3—1987 6

SECTION 2. BASIC PRINCIPLES

2.1 BASIC SYMBOLS

2.1.1 Distinction between weld symbol and weldingsymbol.This standard makes a distinction between theterms weld symboland welding symbol. The weldsymbol(see Fig. 2.1) indicates the type of weld. Thewelding symbol (see Fig. 2.3) is a method ofrepresenting the weld symbol on drawings, andincludes supplementary information and consists ofthe following eight elements:

(a) Reference line (shown horizontally).

(b) Arrow.

(c) Basic weld symbols.

(d) Dimensions and other data.

(e) Supplementary symbols.

(f) Finish symbols.

(g) Tail.

(h) Specification, process, or other references.

NOTE: Not all of the above elements need to be used unlessrequired for clarity.

2.1.2 Illustrations. Examples given includingdimensions (in millimetres) are illustrative only andare intended to facilitate communications. They arenot intended to represent design practices or toreplace code or specification requirements.

2.1.3 Basic weld symbols. Basic weld symbolsshall be as shown in Fig. 2.1. The symbols shall bedrawn ‘on’ the reference line (shown dotted).

2.1.4 Supplementary symbols. Supplementarysymbols to be used in connection with weldingsymbols shall be as shown in Fig. 2.2.

2.1.5 Standard location of elements of a weldingsymbol. The elements of a welding symbol shallhave standard locations with respect to each other asshown in Fig. 2.3. Specification and processreferences should be shown in the tail of thewelding symbol.

Fig. 2.1. BASIC WELD SYMBOLS

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Fig. 2.2. SUPPLEMENTARY SYMBOLS

2.2 BASIC TYPES OF JOINTS AND WELDS.2.2.1 Basic types of joints.The basic types of jointsare shown in Fig. 2.4.

2.2.2 Applicable welds. Applicable welds in basictypes of joints are listed in Fig. 2.4.2.3 GENERAL PROVISIONS2.3.1 Location significance of arrow.2.3.1.1 General. The location significance of arrowis shown in Fig. 2.5.

Fig. 2.5. LOCATION SIGNIFICANCE OF ARROW

2.3.1.2 Butt, fillet, and flange weld symbols.Forsymbols for butt, fillet, and flange welds, the arrowshall connect the welding symbol reference line to oneside of the joint and this side shall be considered thearrow side of the joint. The side opposite the arrowside of the joint shall be considered the other side ofthe joint (See Fig. 2.6.)

2.3.1.3. Plug, slot, spot, seam and projection weldsymbols.For symbols for plug, slot, spot, seam, andprojection welds, the arrow shall connect the weldsymbol reference line to the outer surface of one ofthe members of the joint at the centreline of thedesired weld. The member towards which the arrowpoints shall be considered the arrow side member.The other member of the joint shall be considered theother side member. (See figures cited in Sections 7 to10 inclusive).

2.3.1.4Symbols with no side significance.Some weldsymbols have no arrow side or other side significance,although supplementary symbols used in conjunctionwith them may have significance (see Fig. 2.7 andClauses 9.1.2 and 9.1.4).

* Use appropriate letter symbol for process

Fig. 2.7. SYMBOLS WITH NO SIDESIGNIFICANCE

2.3.2 Location of weld with respect to joint.2.3.2.1 Arrow side.Welds on the arrow side of thejoint shall be shown by placing the weld symbol onthe side of the reference line towards the reader (seeFig. 2.8 and Clause 2.3.1.1).

Fig. 2.8. WELDS ON ARROW SIDE

2.3.2.2 Other side. Welds on the other side of thejoint shall be shown by placing the weld symbol onthe side of the reference line away from the reader(see Fig. 2.9 and Clause 2.3.1.1).

Fig. 2.9. WELDS ON OTHER SIDE

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AS 1101.3—1987 8

Fig. 2.3. STANDARD LOCATION OF ELEMENTS OF A WELDING SYMBOL

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Applicable weldsSquare-butt J-buttV-butt Flare-V-buttBevel-butt Flare-bevel-buttU-butt Edge-f lange

Braze

Applicable weldsFillet Flare-bevel-buttSquare-bult Edge-f langeV-butt Corner-f langeBevel-butt SpotU-butt ProjectionJ-butt SeamFlare-V-butt Braze

Applicable weldsFillet J-buttPlug Flare-bevel-buttSlot SpotSquare-butt ProjectionBevel-butt Seam

Braze

Applicable welds

Fillet J-buttPlug Flare-bevel-buttSlot SpotBevel-butt Projection

SeamBraze

Applicable welds

Square-butt Edge-f langeBevel-butt Corner-f langeV-butt SeamU-butt EdgeJ-butt

Fig. 2.4. BASIC TYPES OF JOINTS

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Fig. 2.6. APPLICATION OF ARROW SIDE AND OTHER SIDE CONVENTION

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2.3.2.3 Both sides.Welds on both sides of the jointshall be shown by placing weld symbols on both sidesof the reference line, towards and away from thereader (see Fig. 2.10 and Clause 2.3.1.1).

Fig. 2.10 WELDS ON BOTH SIDES

2.3.3 Method of drawing symbols.Symbols may bedrawn mechanically or freehand as desired. Symbolsintended to appear in publications or otherwise to beof high precision may be drawn with dimensions andproportions shown in Appendix B.

2.3.4 Location of a specification, procedure,process, or other reference.

2.3.4.1 Symbols with references.Where a specifica-tion, procedure, process, or other reference is usedwith a welding symbol, the reference shall be placedin the tail (see Fig. 2.11).

Fig. 2.11. REFERENCE LOCATION

2.3.4.2 Symbols without reference.Where desired,symbols may be used without specification, process,or other references in the following instances:

(a) Where a note such as the following appears onthe drawing: ‘Unless otherwise designated, allwelds are to be made in accordance withSpecification No....’

(b) Where the welding procedure to be used isprescribed elsewhere, such as in shop instructionsand process sheets.

2.3.4.3 General notes.Where desired, general notessuch as the following may be placed on a drawing toprovide detailed information pertaining to thepredominant welds:

‘Unless otherwise indicated, all fillet welds are 6 mmin size.’

‘Unless otherwise indicated, root gaps for all buttwelds are 3 mm.’

The information need not be repeated on the symbols.

2.3.4.4 Process indication. Where use of a definiteprocess is required, the process shall be indicated byletter designations as shown in Appendix A (seeFig. 2.12).

Fig. 2.12 PROCESS INDICATION

2.3.4.5 Symbol without tail. Where no specifica-tion, process, or other reference is used with awelding symbol, the tail may be omitted.

2.3.5 Site weld symbol.Site weld (welds not madein a shop or at the place of initial construction) shallbe indicated by means of the site weld symbol. Theflag shall point away from the arrow. (See Fig.2.13.)

Fig. 2.13. USE OF SITE WELD SYMBOL

2.3.6 Symbol for complete penetration from oneside.

2.3.6.1 Use. The symbol for complete penetrationfrom one side shall be used only where completejoint or member penetration plus reinforcement isrequired in welds made from one side only (seeFig. 2.14).

2.3.6.2 Location.The symbol for complete penetra-tion from one side shall be placed on the side of thereference line opposite to the weld symbol (see Fig.2.14).

2.3.6.3 Dimensions. Dimensions of completepenetration need not be shown on the weldingsymbol. If it is desired to specify height ofreinforcement, it shall be shown on the drawing.(See Fig. 2.14.)

2.3.7 Contour and surface finish methods forcomplete penetration from one side.

2.3.7.1 Flush contour. Complete penetration weldsfrom one side that is to be made flush bymechanical means shall be shown by adding boththe flush contour symbol and the required finishsymbol to the symbol for complete penetration fromone side (see Clause 2.3.10 and Fig. 2.15).

Fig. 2.15. INDICATION OF FLUSH CONTOUR

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Fig. 2.14 APPLICATION OF SYMBOL FOR COMPLETE PENETRATION

FROM ONE SIDE

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2.3.7.2 Convex contour.Complete penetration weldsfrom one side that is to be mechanically finished to aconvex contour shall be shown by adding both theconvex contour symbol and the required finish symbolto the symbol for complete penetration from one side(see Clause 2.3.10 and Fig. 2.16).

Fig. 2.16. INDICATION OF CONVEX CONTOUR

2.3.8 Extent of welding denoted by symbols.

2.3.8.1 Abrupt changes. Symbols apply betweenabrupt changes in the direction of the welding or tothe extent of hatching or dimension lines, exceptwhere the weld-all-around symbol is used (seeFigs 2.19 and 2.20).

2.3.8.2 Hidden joints. Where the welding of thehidden joint is the same as that of the visible joint, thewelding on hidden joints may be covered, as shown inFig. 2.17. In such case, a section is desirable but isnot necessary. The drawing shall indicate thepresence of hidden members. If the welding on thehidden point is different from that of the visible joint,specific information for the welding of both shall begiven. If needed for clarification, auxiliary illus-trations or views shall be added.

Fig. 2.17. EXAMPLE OF HIDDEN JOINT

2.3.8.3 Approximate location. Where the exactlocation of the weld is not critical, it may be indicatedas in Fig. 2.19(d).

2.3.8.4 Use of weld-all-around symbol. Weldsextending completely around a joint shall be indicatedby the weld-all-around symbol (see Fig. 2.18).

Welds that are completely around a joint whichincludes more than one type of weld, indicated by acombination weld symbol, shall be designated by theweld-all-around symbol. Welds completely around ajoint in which the metal intersections at the points ofwelding are in more than one plane shall also beindicated by the weld-all-around symbol. (SeeFig 2.20(c)).

Fig. 2.18. USE OF WELD-ALL-AROUND SYMBOL

2.3.9 Weld continuity. Unless otherwise indicated,all welds shall be continuous.

2.3.10 Finishing of welds. Finishing of welds,other than cleaning, shall be indicated by suitablecontour and finish symbols. The following finishingsymbols indicate the method, not the degree* , offinish:

C — Chipping.

G — Grinding.

M — Machining.

R — Rolling.

P — Peening.

(See Clauses 2.3.7, 3.9, 4.4, 4.5.3, 7.6, 8.4, 9.6, and10.6.)

2.3.11 Construction of symbols.Fillet, bevel andJ-butt, flare-bevel-butt, and corner-flange weldsymbols shall be shown with the perpendicular legalways to the left (see Fig. 2.25).

Fig. 2.25. CONSTRUCTION OF SYMBOLS

2.3.12 Crank in arrow. Where one member of ajoint is to be prepared, the arrow shall point with adefinite crank towards that member (see Fig. 2.26,and also Figs 2.21 and 2.22).

Fig. 2.26. CRANK IN ARROW

* For methods of indicating degree of f inish, see AS 2536.

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Fig. 2.19. DESIGNATION OF LOCATION AND EXTENT OF FILLET WELDS

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(a) Weld with abrupt changes in direction

Fig. 2.20 DESIGNATION OF EXTENT OF WELDING

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(b) Weld-all -around symbol

Fig. 2.20 (continued )

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(c) Weld in several planes(Weld continues around periphery)

(d) Round point(round member prepared by machining to round point)

(e) Chisel point(round member prepared by machining to chisel point)

Fig. 2.20 (continued )

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(a) Arrow side

(b) Other side

(c) Both sides

Fig. 2.21. APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL(BEVEL-BUTT WELD)

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(a) Arrow side

(b) Other side

(c) Both sides

Fig. 2.22. APPLICATION OF CRANK IN ARROW OF WELDING SYMBOL(J-BUTT WELD)

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(a) Single-bevel-butt and backing run weld symbols

(b) Back or backing, single-J-butt and fil let weld symbols

(c) Fillet and double-bevel-butt weld symbols

(d) Single-bevel-butt and double-fi llet weld symbols

Fig. 2.23. COMBINATION OF WELD SYMBOLS SHOWING CRANK IN ARROW

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2.3.13 Reading of information on welding symbols.Information on welding symbols shall be placed toread from left to right along the reference line inaccordance with the usual conventions of drafting.

2.3.14 Combined weld symbols.For joints havingmore than one weld, a symbol shall be shown for eachweld (see figs 2.23 and 2.24).

2.3.15 Complete penetration. The letters ‘CP’ inthe tail of the arrow indicate a complete penetrationweld regardless of the type of weld or jointpreparation (see Clause 4.2.7 and Fig. 4.14).

2.3.16 Designation of special types of weld.Wherethe basic weld symbols are inadequate to indicate thedesired weld, the weld shall be shown by a cross-section, detail, or other data with a reference theretoon the welding symbol in accordance with the locationconventions given in Clause 2.3.1 (see Fig. 2.27).

Fig. 2.27. DESIGNATIONS OF SPECIAL WELDTYPES

Desired weld Symbol(a)

Desired weld Symbol(b)

Fig. 2.24. APPLICATION OF ELECTROGAS WELDING AND ELECTROSLAGWELDING WITH COMBINATION OF WELD SYMBOLS

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2.3.17 Multiple reference lines.

2.3.17.1 Sequence of operations. Two or morereference lines may be used to indicate a sequence ofoperations. The first operation is shown on thereference line nearest the arrow. Subsequentoperations are shown sequentially on other referencelines. (See Fig. 2.28.)

Fig. 2.28. INDICATION OF SEQUENCE OFOPERATION

2.3.17.2 Supplementary data.Additional referencelines may be used to show data supplementary towelding symbol information included on the referenceline nearest to the arrow (see Fig. 2.29).

Fig. 2.29. USE OF ADDITIONAL REFERENCE LINEFOR SUPPLEMENTARY DATA

2.3.17.3 Test information.Test information may beshown on a second or third reference line away fromthe arrow as described in Section 12.

2.3.17.4 Supplementary symbols.Where required,the weld-all-around symbol or test-all-aroundsymbol shall be placed at the junction of the arrowline and reference line for each operation to whichit is applicable. The site weld symbol may also beapplied in the same manner. (See Fig. 2.30.)

Fig. 2.30. USE OF SUPPLEMENTARYSYMBOLWITH MULTIPLE REFERENCE LINE

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SECTION 3. SYMBOLS FOR FILLET WELDS

3.1 GENERAL

3.1.1 Dimensioning fillets. Dimensions of filletwelds shall be shown on the same side of thereference line as the weld symbol (see Figs 2.19, 3.4,and 3.5).

3.1.2 Symbols with no general note. Where nogeneral note governing the dimensions of fillet weldsappears on the drawing, the dimensions of fillet weldson both sides of the joint shall be shown (see Figs 3.1and 3.2).

Fig. 3.1. WELDS WITH SAME DIMENSIONS

Fig. 3.2. WELDS WITH DIFFERENT DIMENSIONS

3.1.3 Symbols with general note.Where a generalnote appears on the drawing governing the dimensionsof fillet welds, such as ‘unless otherwise indicated, allfillet welds are 8 mm in size’, the dimensions of filletwelds need not be shown on the symbol.

3.2 SIZE OF FILLET WELDS.

3.2.1 Location. The size of a fillet weld shall beshown to the left of the weld symbol (see Fig. 3.4(a),(b), (c), and (d)).

NOTE: Examples shown in Fig. 3.4 are for joints withoutroot gaps. For root gaps caused by workmanship tolerances,the appropriate application standard should be followed forfi llet weld sizes.

3.2.2 Unequal legs. The size of a fillet weld withunequal legs shall be indicated to the left of the weldsymbol. Weld orientation is not indicated by thesymbol and shall be shown on the drawing whennecessary. (See Fig. 3.4(d).)3.2.3 Minimum size. Unless otherwise indicated, thedeposited fillet weld size shall be not less than thesize shown on the drawing.3.2.4 Penetration. Where penetration for a givenroot opening is specified, as in Fig. 3.8(a), theinspection method for determining penetration depthis to be included in the applicable specification.

3.3 LENGTH OF FILLET WELDS.3.3.1 Location. The length of a fillet weld, whereindicated on the welding symbol, shall be shown tothe right of the weld symbol (see Fig. 3.3, and alsoFig. 3.4(f)).

Fig. 3.3. LENGTH OF FILLET WELDS

3.3.2 Abrupt changes. Where fillet weldingextends for the full distance between abrupt changesin the direction of the welding (see Clause 2.3.8), nolength dimension need be shown on the weldingsymbol (see Fig. 3.4(e)).

3.3.3 Specific lengths. Specific lengths of filletwelding may be indicated by symbols in conjunctionwith dimension lines (see Fig. 3.6, and alsoFig. 2.19(a) and (c)).

Fig. 3.6. INDICATION OF SPECIFIC LENGTHS OFFILLET WELDS

3.4 EXTENT OF FILLET WELDING.3.4.1 Hatching. Where it is desired to shown theextent of fillet welding graphically, the location ofthe weld may be shown by hatching (see Fig. 3.7).

Fig. 3.7. EXTENT OF FILLET WELDING SHOWNBY HATCHING

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Fig. 3.4. APPLICATION OF DIMENSIONS TO FILLET WELD

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(a) Length and pitch of increments of intermittent welding

(b) Length and pitch of increments of chain intermittent welding

(c) Length and pitch of increments of staggered intermit tent welding

NOTE: If required by actual length of the joint, the length of the increment of the welds at the end of the joint should be increased toterminate the weld at the end of the joint.

Fig. 3.5. APPLICATION OF DIMENSIONS TO INTERMITTENT FILLET WELDSYMBOLS

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3.4.2 Welds beyond abrupt changes.Fillet weldingextending beyond abrupt changes in the direction of thewelding shall be indicated by means of additional arrowspointing to each section of the joint to be welded, asshown in Fig. 2.20(a), except where the weld-all-aroundsymbol is used.

3.5 DIMENSIONING OF INTERMITTENT FILLETWELDING. Dimensioning of intermittent fillet weldingshall be as follows:

(a) The pitch (centre-to-centre spacing) of intermittentfillet welding shall be shown as the distance betweencentres of increments on one side of the joint (seeFig. 3.5).

(b) The pitch (centre-to-centre spacing) of intermittentfillet welding shall be shown to the right of thelength dimension (see Fig. 3.5).

(c) Dimensions of chain intermittent fillet welding shallbe shown on both sides of the reference line. Chainintermittent fillet welds shall be opposite each otheras shown in Fig. 3.5(b).

(d) Dimensions of staggered intermittent fillet weldingshall be shown on both sides of the reference lineusing the convention shown in Fig. 3.5(c).

3.6 TERMINATION OF INTERMITTENT FILLETWELDING.3.6.1 Intermittent fillets only. Where intermittent filletwelding is used by itself, the symbol indicates thatincrements shall be located at the ends of thedimensioned length (see Fig. 2.19(b)).3.6.2 Intermittent welds between continuous welds.Where intermittent fillet welding is used betweencontinuous fillet welds, the symbol indicates that spacesequal to the pitch minus the length of one increment shallbe left at the ends of the dimensioned length (see Figs2.19(a) and 3.5(a)).

3.7 COMBINATION OF INTERMITTENT ANDCONTINUOUSFILLET WELDING. Separateweldingsymbols shall be used for intermittent and continuousfillet welding where the two are used in combinationalong one side of the joint (see Fig. 2.19(a)).3.8 FILLET WELDS IN HOLES AND SLOTS. Filletwelds in holes and slots shall be shown by means of filletweld symbols (see Fig. 3.8(b)).3.9 SURFACE FINISH AND CONTOUR OFFILLET WELDS.3.9.1 Contours obtained by welding.Fillet welds thatare to be welded approximately flat, convex, or concavewithout recourse to any method of finishing shall beshown by adding the flush, convex, or concave contoursymbol to the weld symbol, in accordance with thelocation conventions given in Clause 2.3.1 (see Fig. 3.9).

Fig. 3.9. INDICATION OF WELD CONTOUR WITHOUTMECHANICAL MEANS

3.9.2 Flat contour by mechanical means. Filletwelds that are to be made flat faced by mechanicalmeans shall be shown by adding both the flush contoursymbol and the required finish symbol to the weldsymbol, in accordance with the location conventionsgiven in Clause 2.3.1 (see Clause 2.3.10 and Fig. 3.10).

Fig. 3.10. FLAT CONTOUR BY MECHANICALMEANS

3.9.3 Convex contour by mechanical means.Filletwelds that are to be mechanically finished to a convexcontour shall be shown by adding both the convexcontour symbol and the required finish symbol to theweld symbol, in accordance with the locationconventions given in Clause 2.3.1 (see Clause 2.3.10and Fig. 3.11).

Fig. 3.11. CONVEX CONTOUR BY MECHANICALMEANS

3.9.4 Concave contour by mechanical means.Filletwelds that are to be mechanically finished to a concavecontour shall be shown by adding both the concavecontour symbol and the required finish symbol to theweld symbol, in accordance with the locationconventions given in Clause 2.3.1 (see Clause 2.3.10and Fig. 3.12).

Fig. 3.12. CONCAVE CONTOUR BY MECHANICALMEANS

3.10 SKEWED JOINTS. Where the angle betweenfusion faces is such that the identification of the type ofweld and hence the proper weld symbol is in question,the detail of the desired joint and weld configurationshall be shown on the drawing.

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Desired weld Symbol

(a) Combination fillet and butt weld inT-joint with specified root gap

(b) Fillet weld in holes (or slot)

Fig. 3.8. APPLICATION OF FILLET WELD SYMBOLS

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(c) Double fillet weld symbols for one joint

(d) Double fillet weld symbols for two joints

Fig. 3.8. (continued).

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SECTION 4. SYMBOLS FOR BUTT WELDS

4.1 GENERAL4.1.1 Dimension location. Dimensions showingpreparation of butt welds shall be indicated on thesame side of the reference line as the weld symbol(see Fig. 4.2, and also Fig. 4.1).

4.1.2 Double-butt dimensions. Where no generalnote governing the dimensions of welds appears onthe drawing, the dimensions of double-butt welds shallbe shown on both welds (see Figs 4.3 and 4.4).4.1.3 Cranked arrow. For bevel-butt, J-butt andcorner flange welds, a cranked arrow shall be used toindicate which member is prepared as described inClause 2.3.12 (see Fig. 4.5).4.1.4 Dimensions in general note.Where a generalnote appears on the drawing governing the dimensions

of butt welds, such as ‘unless otherwise noted, allV-butt welds shall have a 60° groove angle’, neitherbutt weld need be dimensioned.4.2 DEPTH OF PREPARATION AND DESIGNTHROAT THICKNESS OF BUTT WELDS.4.2.1 Location. The depth of groove preparation(S) and design throat thickness (D) of a butt weldshall be shown to the left of the weld symbol (seeFigs 4.6 to 4.9).4.2.2 Complete joint penetration required.Where no depth of groove preparation or designthroat thickness is shown on the welding symbol forsingle-butt and symmetrical double-butt welds,complete joint penetration is required (see Fig.4.6(d) and (e)).

Fig. 4.1. APPLICATION OF DIMENSIONS TO BUTT WELD SYMBOLS(BUTT WELD SYMBOL SHOWING USE OF COMBINED DIMENSIONS)

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Fig. 4.2. DIMENSIONS LOCATION FOR BUTT WELDS

Fig. 4.3. WELDS WITH SAME DIMENSIONS

Fig. 4.4. WELDS WITH DIFFERENT DIMENSIONS

Fig. 4.5. USE OF CRANKED ARROW

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Fig. 4.6. DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDS

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(a) Depth of preparation ‘S’ equal to design throat thickness (D)

(b) Depth of preparation ‘S’ less than design throat thickness (D)

(c) Depth of preparation ‘S’ more than design throat thickness (D)

(d) No preparation

Fig. 4.7. EXAMPLES OF DIFFERENT RELATIONSHIPS BETWEEN DEPTH OFPREPARATION ‘S’ AND DESIGN THROAT THICKNESS (D)

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Fig. 4.8. DESIGNATION OF DESIGN THROAT THICKNESS OF BUTT WELDSWITH SPECIFIED DEPTH OF PREPARATION

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(a) Butt joint with no root opening

(b) Arrow side bevel-butt weld with root opening

(c) Both sides V-butt weld with root opening

Fig. 4.9. DESIGNATION OF DESIGN THROAT THICKNESS OFBUTT WELDS WITHOUT SPECIFIED DEPTH OF PREPARATION

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NOTE: The total design throat thickness of the T-butt portion of the weld cannot be greater than the thickness of the intersecting plate.

Fig. 4.10. DESIGNATION OF DESIGN THROAT THICKNESS OF COMBINED WELDS

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4.2.3 Partial joint penetration specified, depth ofpreparation not specified. The design throatthickness of butt welds which extend only partlythrough the member or members being joined shall beshown in parentheses on the welding symbol (seeFig. 4.11, and also Fig, 4.7(a), (b), (c) and (d)).

Fig. 4.11. PARTIAL JOINT PENETRATION

4.2.4 Depth of preparation specified, design throatthickness not specified, or specified elsewhere.Adimension not in parentheses placed to the left of thesymbol for a bevel weld, V-butt weld, J-butt weld, orU-butt weld indicates only the depth of preparation(see Fig. 4.12).

Fig. 4.12. INDICATION OF DEPTH OFPREPARATION ONLY

4.2.5 Depth of preparation and design throatthickness specified.Except for square-butt welds, thedesign throat thickness (D) in relation to the depth ofgroove preparation S shall be shown to the left of theweld symbol. The design throat thickness (D) only isshown for the square-butt weld. (See Fig. 4.13, andalso Figs 4.8, 4.9, and 4.10.) The design throatthickness (D) shall always be enclosed in brackets.NOTE: In no case shall the total design throat thickness exceed thethickness of the thinner member of the weld joint.

Fig. 4.13. INDICATION OF DEPTH OFPREPARATION AND DESIGN THROAT THICKNESS

4.2.6 Special case of requirement of Clause 4.2.5—design throat thickness where specified less thandepth of preparation. Where it is desired to indicatea design throat thickness (D) less than the depth ofpreparation S, (D) is shown less than S on the weldingsymbol (see Figs 4.7(c) and 4.16).

4.2.7 Joint preparation optional, complete pene-tration required. Contract design drawings, orother drawings where conditions dictate, may allowoptional joint preparation with complete jointpenetration required by placing the letters ‘CP’ inthe tail of the arrow and omitting the weld symbol(see Fig. 4.14).

4.2.8 Joint preparation optional, design throatthickness specified. For contract design drawingswhere conditions dictate, the design throat thicknessmay be specified by placing the dimension D on thearrow side or other side of the reference line asrequired but omitting the weld symbol (seeFig. 4.15).

4.2.9 Flare-butt welds. The dimension S of flare-butt welds is considered as extending only to thetangent points indicated below by dimension lines(see Fig. 4.16).

4.3 JOINT PREPARATION DIMENSIONS.4.3.1 Root gap. The root gap of butt welds shallbe shown inside the weld symbol (see Fig. 4.17).4.3.2 Preparation angle. The preparation angle ofbutt welds shall be shown outside the weld symbol(see Fig. 4.18).4.3.3 Radii and root faces. Radii and land of U-butt and J-butt welds shall be shown by a cross-section, detail, or other data, with reference theretoon the welding symbol, in accordance with thelocation conventions given in Clause 2.3.1 (seeFig. 4.19).

Fig 4.19. EXAMPLES OF INDICATING DETAILS OFRADII AND ROOT FACES

4.4 SURFACE FINISH AND CONTOUR OFBUTT WELDS.4.4.1 Contours obtained by welding. Butt weldsthat are to be welded approximately flush withoutrecourse to any method of finishing shall be shownby adding the flush contour symbol to the weldsymbol, in accordance with the location conventionsgiven in Clause 2.3.1 (see Fig. 4.20, and alsoFig. 4.25(a)).

Fig. 4.20. INDICATION OF FLUSH CONTOURWITHOUT MECHANICAL MEANS

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(a) Joint preparation optional

Desired weld Symbol

(b) Joint preparation optional

Fig. 4.14. COMPLETE PENETRATION REQUIRED, JOINT PREPARATIONOPTIONAL

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Fig. 4.15. PARTIAL PENETRATION SPECIFIED, JOINT PREPARATION OPTIONAL

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(a) Flare-V-butt weld with specif ied partial joint preparation

(b) Flare-bevel-butt weld with specif ied part ial joint penetration and fi llet weld

Fig. 4.16. APPLICATION OF FLARE-BEVEL-BUTT AND FLARE-V-BUTT WELD SYMBOLS

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Fig. 4.16. (continued )

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41 AS 1101.3—1987

Fig. 4.17. DESIGNATION OF ROOT GAP OF BUTT WELDS

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Fig. 4.18. DESIGNATION OF PREPARATION ANGLE OF BUTT WELDS

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43 AS 1101.3—1987

4.4.2 Flush contour by mechanical means.Buttwelds that are to be made flush by mechanical meansshall be shown by adding both the flush contoursymbol and the required finish symbol to the weldsymbol, in accordance with the location conventionsgiven in Clause 2.3.1 (see Fig. 4.21, and alsoFig. 4.25 and Clause 2.3.10).

Fig. 4.21. INDICATION OF FLUSH CONTOUR BYMECHANICAL MEANS

4.4.3 Convex contour by mechanical means.Buttwelds that are to be mechanically finished to a convexcontour shall be shown by adding both the convexcontour symbol and the required finish symbol to theweld symbol, in accordance with the locationconventions given in Clause 2.3.1 (see Fig. 4.22, andalso Fig. 4.25(c) and Clause 2.3.10).

Fig. 4.22. INDICATION OF CONVEX CONTOUR BYMECHANICAL MEANS

4.5 BACKING RUN OR BACKING WELDS.4.5.1 General. The backing run or backing weldsymbol shall be used to indicate bead type backingrun or backing welds or single-butt welds (seeFig. 4.26).

4.5.2 Backing run or backing weld symbol.Backing runs or backing welds of single-butt weldsshall be shown by placing a backing run or backingweld symbol on the side of the reference line oppositethe butt weld symbol (see Fig. 4.23, and alsoFig. 4.26).

Fig. 4.23. USE OF BACKING RUN OR BACKINGWELD SYMBOL

4.5.3 Surface contour of backing run or backingwelds.4.5.3.1 Contours obtained by welding.Backing runor backing welds that are to be welded approximate-ly flush without recourse to any method of finishingshall be shown by adding the flush contour symbolto the backing run or backing weld symbol (seeFig. 4.24).

Fig 4.24. INDICATION OF FLUSH CONTOURWITHOUT MECHANICAL MEANS

4.5.3.2 Flush contour by mechanical means.Backing runs or backing welds that are to be madeflush by mechanical means shall be shown byadding both the flush contour symbol and therequired finish symbol to the backing run or backingweld symbol (see Fig. 4.27 and Clause 2.3.10).

Fig. 4.27. INDICATION OF FLUSH CONTOUR BYMECHANICAL MEANS

4.5.3.3 Convex contour by mechanical means.Backing run or backing welds that are to bemechanically finished to a convex contour shall beshown by adding both the convex contour symboland the required finish symbol to the backing run orbacking weld symbol (see Fig. 4.28 andClause 2.3.10).

Fig. 4.28. INDICATION OF CONVEX CONTOUR BYMECHANICAL MEANS

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4.6 JOINT WITH BACKING. A joint with backingshall be shown as a combination of the butt weldsymbol on one side of the reference line and arectangle on the opposite side in which shall beincluded one of two notations as shown in Fig. 4.29.

NOTE: Material and dimensions of backing asspecif ied.

Fig. 4.29. JOINT WITH BACKING

4.7 JOINT WITH SPACER. A joint with spacershall be shown with the butt weld symbol modified toshow a rectangle within it, and the rectangle shallinclude a notation as shown in Fig. 4.30.

4.8 CONVENTION FOR BACK GOUGINGAFTER WELDING ONE SIDE . A secondreference line may be used (see Clause 2.3.17) fora second operation which cannot be performed untilafter the first is completed. Back gouging andwelding as a second operation are thus indicated asshown in Fig. 4.31.

Symbol

NOTE: The total design throat thickness not to exceed thicknessof member

Fig. 4.31. INDICATION OF BACK GOUGINGAFTER WELDING

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(a) Arrow side flush contour symbol

(b) Other side flush contour symbol

(c) Both sides convex contour symbol

Fig. 4.25. APPLICATION OF FLUSH AND CONVEX CONTOUR SYMBOLSTO BUTT WELD SYMBOLS

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NOTE: Butt weld made before welding other side

(a) Use of backing run or backing weld symbol to indicate single-run back weld

NOTE: Butt weld made after welding other side

(b) Use of backing run or backing weld symbol to indicate single-run backing weld

NOTE: The total design throat thickness cannot begreater than 25 mm

(c) Back gouging after welding one side

NOTE: The total design throat thickness cannotbe greater than plate thickness T

(d) Use of backing weld with root gap

Fig. 4.26. APPLICATION OF BACKING RUN OR BACKING WELD SYMBOLWITH AND WITHOUT GOUGING

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(a) Spacer in double-bevel-butt joint

(b) Spacer in double-V-butt joint

(c) Spacer in double-bevel-butt joint

NOTE: Materials and dimensions of spacer as specif ied.

Fig. 4.30. JOINTS WITH SPACERS

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SECTION 5. SYMBOLS FOR SURFACING

5.1 GENERAL (see Fig. 5.1). The surfacingsymbol shall be used to indicate surfaces built up bywelding for such purposes as the following:

(a) Correcting dimensions.(b) Transition between dissimilar metals.

(c) Corrosion resistance.(d) Wear resistance.

5.2 USE OF SURFACING SYMBOL.5.2.1 Symbol application. Surfaces built up bywelding, whether by single-pass or multiple-passsurfacing welds, shall be shown by the surfacingsymbol (see Fig. 5.1).5.2.2 Arrow side significance. The surfacingsymbol does not indicate the welding of a joint andtherefore has no arrow or other side significance. Thesymbol shall be drawn beneath the reference line andthe arrow shall point clearly to the surface on whichthe weld is to be deposited. (See Fig. 5.1.)

5.2.3 Dimension location. Dimensions used inconjunction with the surfacing symbol shall be shownon the same side of the reference line as the weldsymbol (see Fig. 5.1).

5.3 SIZE (THICKNESS) OF SURFACES BUILTUP BY WELDING.5.3.1 Minimum thickness. The size of a surface tobe built up by welding shall be indicated by showingthe minimum thickness of the weld deposit to the leftof the weld symbol (see Fig. 5.1(a)).

5.3.2 Unspecified thickness. Where no specificthickness of weld deposit is desired, no sizedimension need be shown on the welding symbol.

5.4 EXTENT, LOCATION, AND ORIENTA-TION OF SURFACES BUILT UP BYWELDING.5.4.1 Entire area. Where the entire area of aplane or curved surface is to be built up by welding,no dimension other than size (thickness of deposit)need be shown on the welding symbol (seeFig. 5.1(c)).

5.4.2 Portion of area. Where a portion of the areaof a plane or curved surface is to be built up bywelding, the extent, location, and orientation of thearea to be built up shall be indicated on the drawing(see Fig. 5.1(d)).5.5 SURFACING A WELD FACE. Where it isdesired to show a subsequent surfacing operationover another weld, the multiple reference lineconcept may be used with a fillet weld or butt weldas the first operation and the surfacing operation thesecond (see Fig. 5.2, and also Clause 2.3.17).

Fig. 5.2. SURFACING A WELD FACE

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Fig. 5.1. APPLICATION OF SURFACING SYMBOL TO INDICATE SURFACESBUILT UP BY WELDING

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SECTION 6. SYMBOLS FOR FLANGE WELDING

6.1 GENERAL. Flange welding symbols shall beused to indicate joints in light gauge metal involvingthe flanging of the edges to be joined.

6.2 EDGE-FLANGE WELDS. Edge-flange weldsshall be shown by the edge-flange weld symbol. (Thissymbol has no both sides significance.) (SeeFig. 6.1.)

6.3 CORNER-FLANGE WELDS.6.3.1 Joint detailed. Where the corner-flange weld isdetailed, this shall be shown by the corner-flange weldsymbol. (This symbol has no both sides significance.)(See Fig. 6.2.)

6.3.2 Joint not detailed. Where the corner-flangejoint is not detailed, there shall be a break in thearrow to show which member is flanged (see Fig. 6.3).

Fig. 6.3. CORNER-FLANGEJOINT (NOT DETAILED)

6.4 DIMENSIONS OF FLANGE WELDS.6.4.1 Location. Dimensions of flange welds shall belocated on the same side of the reference line as theweld symbol (see Fig. 6.5, and also Fig. 6.4).

Fig. 6.5. LOCATION OF DIMENSIONS

6.4.2 Radius and height. The radius and theheight above the point of tangency shall be indicatedby showing both the radius and the height, separatedby a plus sign, and placed to the left of the weldsymbol. The radius and the height shall read in thatorder from left to right along the reference line. (SeeFig. 6.6, and also fig. 6.4)

Fig. 6.6. RADIUS AND HEIGHT INDICATION

6.4.3 Weld thickness. The thickness of flangewelds shall be shown by a dimension placedoutward of the flange demensions (see Fig. 6.7, andalso Fig. 6.4).

Fig. 6.7. WELD THICKNESS INDICATION

6.4.4 Root opening. The root opening of flangewelds shall not be shown on the welding symbol. Ifit is desired to specify the root opening, it shall beshown on the drawing.

6.5 MULTIPLE-JOINT FLANGE WELDS. Forflange welds, where one or more pieces are insertedbetween the two outer pieces, the symbol used forthe two outer pieces shall be used regardless of thenumber of pieces inserted (see Fig. 6.4(b) and (c)).

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Fig. 6.1. APPLICATION OF EDGE-FLANGE WELD SYMBOL

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Fig. 6.2. APPLICATION OF CORNER-FLANGE WELD SYMBOL

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Fig. 6.4. APPLICATION OF EDGE-FLANGE AND CORNER-FLANGE WELD SYMBOLS

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SECTION 7. SYMBOLS FOR PLUG WELDING

7.1 GENERAL7.1.1 Arrow side holes. Holes in the arrow sidemember of a joint to be plug welded shall be indicatedby placing the weld symbol on the side of thereference line toward the reader (see Fig. 7.1(a)).7.1.2 Other side holes. Holes in the other sidemember of a joint to be plug welded shall be indicatedby placing the weld symbol on the side of thereference line away from the reader (see Fig. 7.1(b)).

7.1.3 Dimensions. Dimensions of plug welds shallbe shown on the same side of the reference line as theweld symbol (see Fig. 7.2).

7.1.4 Fillets in holes. The plug weld symbol shallnot be used to designate fillet welds in holes (seeClause 3.8).

7.2 SIZE OF PLUG WELDS. The size of a plugweld shall be shown to the left of the weld symbol(see Fig. 7.2(a)).

7.3 ANGLE OF COUNTERSINK. Included angleof countersink of plug welds shall be shown on thesymbol (see Fig. 7.2(b)).

7.4 DEPTH OF FILLING. Unless otherwiseindicated, the depth of filling of plug welds shall becomplete. Where the depth of filling is less thancomplete, it shall be shown inside the weld symbol.(See Fig. 7.2(c).)7.5 SPACING OF PLUG WELDS. Pitch (centre-to-centre) of plug welds shall be shown to the right ofthe weld symbol (see Fig. 7.2(d)).

7.6 SURFACE CONTOUR OF PLUG WELDS.7.6.1 Flush welds without finishing. Plug weldsthat are to be welded approximately flush withoutrecourse to any method of finishing shall be shownby adding the flush contour symbol to the weldsymbol (see Fig. 7.3).

Fig. 7.3. FLUSH CONTOUR WITHOUTMECHANICAL MEANS

7.6.2 Flush welds mechanically finished. Plugwelds that are to be made flush by mechanicalmeans shall be shown by adding both the flushcontour symbol and the required finish symbol tothe weld symbol (see Fig. 7.4 and Clause 2.3.10).

Fig. 7.4. FLUSH CONTOUR BY MECHANICALMEANS

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Fig. 7.1. APPLICATION OF PLUG WELD SYMBOL

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Fig. 7.2. APPLICATION OF DIMENSIONS TO PLUG WELD SYMBOLS

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SECTION 8. SYMBOLS FOR SLOT WELDING

NOTE: This Section applies only to slot welds which arepart ially or completely fi lled. For f il let welds in slots, seeClause 3.8.

8.1 GENERAL8.1.1 Arrow side slots. Slots in the arrow sidemember of a joint to be slot welded shall be indicatedby placing the weld symbol on the side of thereference line toward the reader (see Fig. 8.1(a)).8.1.2 Other side slots. Slots in the other sidemember of a joint to be slot welded shall be indicatedby placing the weld symbol on the side of thereference line away from the reader (see Fig. 8.1(b)).

8.1.3 Dimensions.Dimensions of slot welds shall beshown on the same side of the reference line as theweld symbol (see Fig. 8.2).

8.2 DEPTH OF FILLING. Unless otherwiseindicated, the depth of filling of slot welds shall becomplete. Where the depth of filling is less thancomplete, the depth of filling shall be shown insidethe weld symbol. (See Fig. 8.2(b).)

8.3 DETAILS OF SLOT WELDS . Length, width,spacing, included angle of countersink, orientation,and location of slot welds cannot be shown on thewelding symbol. These data shall be shown on thedrawing or by a detail with a reference thereto onthe welding symbol, in accordance with the locationconventions given in Clause 2.3.1. (See Fig. 8.2.)

Note: See drawing fordimensions and orientation.

(a) Arrow side slot weld symbol

Note: See drawing fordimensions and orientation.

(b) Other side slot weld symbol

Fig. 8.1. APPLICATION OF SLOT WELD SYMBOL

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Fig. 8.2. APPLICATION OF DIMENSIONS TO SLOT WELD SYMBOL

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8.4 SURFACE FINISH AND CONTOUR OFSLOT WELDS.8.4.1 Flush welds without mechanical means.Slotwelds that are to be welded approximately flushwithout recourse to any method of finishing shall beshown by adding the flush contour symbol to the weldsymbol (see Fig. 8.3).

Fig. 8.3. FLUSH CONTOUR WITHOUTMECHANICAL MEANS

8.4.2 Flush welds mechanically finished. Slotwelds that are to be made flush by mechanicalmeans shall be shown by adding both the flushcontour symbol and the required finish symbol tothe weld symbol (see Fig. 8.4 and Clause 2.3.10).

Fig. 8.4. FLUSH CONTOUR WITHMECHANICAL MEANS

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SECTION 9. SYMBOLS FOR SPOT WELDING

9.1 GENERAL.9.1.1 Arrow side significance The spot weldsymbol, in accordance with its location in relation tothe reference line, may or may not have arrow side orother side significance, depending on the processused.

9.1.2 Dimension location. Dimensions shall beshown on the same side of the reference line as thesymbol, or on either side where the symbol is locatedastride the reference line and has no arrow side orother side significance (see Fig. 9.1, and alsoFig. 9.2).

9.1.3 Process reference.The process reference shallbe indicated in the tail of the welding symbol (seeClause 2.3.4.4).

9.1.4 Projection welds.Where projection welding isto be employed the spot weld symbol shall be usedwith the projection welding process reference in thetail of the welding symbol. The spot weld symbolshall be centred above or below (not on) the referenceline to designate in which member the embossment isplaced, in accordance with the location conventionsgiven in Clause 2.3.1.

9.2 SIZE AND STRENGTH OF SPOT WELDS.Spot welds shall be dimensioned by either size orstrength as follows:(a) Size. The size of spot welds shall be

designated as the diameter of the weld, andshall be shown to the left of the weld symbol(see Fig. 9.3(a)).

(b) Strength. The strength of spot welds shall bedesignated in Newtons per spot, and shall beshown to the left of the weld symbol (seeFig. 9.3(b)).

9.3 SPACING OF SPOT WELDS. The pitch(centre-to-centre spacing) of spot welds shall beshown to the right of the weld symbol (seeFig. 9.3(c)).

9.4 EXTENT OF SPOT WELDING. Where spotwelding extends less than the distance betweenabrupt changes in the direction of the welding, orless than the full length of the joint (see Clause2.3.8), the extent shall be dimensioned (seeFig. 9.3(d)).

9.5 NUMBER OF SPOT WELDS. Where adefinite number of spot welds is desired in a certainjoint, the number shall be shown in parentheseseither above or below the weld symbol (see Fig. 9.4,and also Fig. 9.3(e)).

Fig. 9.1 DIMENSION LOCATION FOR SPOT WELD

Fig. 9.4. INDICATION OF NUMBER OF SPOT WELDS

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Fig. 9.2. APPLICATION OF SPOT WELD SYMBOL

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(a) Diameter of spot weld

(b) Shear strength of spot weld

Fig. 9.3. APPLICATION OF DIMENSIONS TO SPOT WELD SYMBOLS

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(d) Extend of spot welding

(e) Specif ied number of spot weld located at random

(f) Spot weld symbol showing use of combined dimensions

Fig. 9.3. (continued )

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9.6 GROUPED SPOT WELDS. A group of spotwelds may be located on a drawing by intersectingcentrelines, with the arrows pointing to at least one ofthe centrelines passing through each weld location(see Fig. 9.5).

9.7 FLUSH SPOT WELDED JOINTS. Where theexposed surface of either member of a spot weldedjoint is to be flush, that surface shall be indicated by

adding the flush contour symbol to the weld symbol,in accordance with the location conventions given inClause 2.3.1 (see Fig. 9.6).

9.8 MULTIPLE-JOINT SPOT WELDS. For spotwelds, where one or more pieces are insertedbetween the two outer pieces, the same symbol asfor the two outer pieces shall be used regardless ofthe number of pieces inserted.

Fig. 9.5. GROUPED SPOT WELDS

Fig. 9.6. FLUSH SPOT WELDS

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SECTION 10. SYMBOLS FOR SEAM WELDING

10.1 GENERAL10.1.1 Arrow side significance. The seam weldsymbol, in accordance with its location in relation tothe reference line, may or may not have arrow side orother side significance, depending on the processused.

10.1.2 Dimensions. Dimensions shall be shown onthe same side of the reference line as the symbol, oron either side where the symbol is located astride thereference line and has no arrow side or other sidesignificance (see Fig. 10.1, and also Fig. 10.2.)

Fig. 10.1. DIMENSIONING SEAM WELD

10.1.3 Process reference. The process referenceshall be indicated in the tail of the welding symbol.

NOTE: For symbols relating to process, see Appendix A.

10.2 SIZE AND STRENGTH OF SEAM WELDS.Seam welds shall be dimensioned by either size orstrength as follows:

(a) Size. The size of seam welds shall be designatedas the width of the weld expressed in millimetresand shall be shown to the left of the weld symbol(see Fig. 10.3(a)).

(b) Strength. The strength of seam welds shall bedesignated in Newtons per millimetre and shall beshown to the left of the weld symbol (seeFig. 10.3(b)).

10.3 LENGTH OF SEAM WELDS.10.3.1 Dimension location. The length of seam,where indicated on welding symbols, shall be shownto the right of the weld symbol (see Fig. 10.4 and alsoFig. 10.3(a)).

Fig. 10.4. DIMENSION LOCATION FOR SEAMWELDS

10.3.2 Abrupt changes. Where a seam weldextends the full distance between abrupt changes inthe direction of the welding (see Clause 2.3.8), nolength dimension need be shown on the weldingsymbol.10.3.3 Specific lengths. Where a seam weldextends less than the distance between abruptchanges in the direction of the welding, or less thanthe full length of the joint, the extent shall bedimensioned (see Fig. 10.5, and also Fig. 10.3(c)).

Fig. 10.5. SPECIFIC LENGTH OF SEAM WELD

10.4 DIMENSIONING OF INTERMITTENTSEAM WELDS.10.4.1 Pitch distance.The pitch (centre-to-centrespacing) of intermittent seam welds shall be shownas the distance between centres of the weldincrements.10.4.2 Dimension location. The pitch (centre-to-centre spacing) of intermittent seam welds shall beshown to the right of the length dimension (seeFig. 10.6, and also Fig. 10.3(a)).

Fig. 10.6. DIMENSION LOCATION FORINTERMITTENT SEAM WELDS

10.5 ORIENTATION OF SEAM WELDS.10.5.1 Intermittent welds. Unless otherwiseindicated, intermittent seam welds shall beinterpreted as having length and pitch measuredparallel to the axis of the weld (see Fig. 10.3(a)).

10.5.2 Showing orientation.Where the orientationof seam welds is not as in Clause 10.5.1, a detaileddrawing shall be used to show the weld orientation(see Fig. 10.7).

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Fig. 10.7. ORIENTATION OF SEAM WELD

10.6 FLUSH SEAM WELDED JOINTS. Where theexposed surface of either member of a seam weldedjoint is to be flush, that surface shall be indicated byadding the flush contour symbol to the weld symbol,in accordance with the location conventions given inClause 2.3.1 (see Fig. 10.8).

10.7 MULTIPLE-JOINT SEAM WELDS . Forseam welds, where one or more pieces are insertedbetween the two outer pieces, the symbol used forthe two outer pieces shall be used regardless of thenumber of pieces inserted.

Fig. 10.8. FLUSH SEAM WELDS

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Fig. 10.2. APPLICATION OF SEAM WELD SYMBOL

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Fig. 10.3. APPLICATION OF DIMENSIONS TO SEAM WELD SYMBOLS

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SECTION 11. SYMBOLS FOR BRAZED JOINTS

11.1 GENERAL. Application of conventionalwelding symbols to brazed joints shall be as illustratedin Fig. 11.1. Figs 11.1(a) to (e) show how jointclearances can be indicated.

11.2 JOINT PREPARATION. If no special jointpreparation other than cleaning is required, only thearrow shall be used with the brazing processindicated in the tail (see Fig. 11.2).

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(a)

(b)

(c)

Fig. 11.1. APPLICATION OF BRAZING SYMBOLS

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(d)

(e)

(f )

(g)

Fig. 11.1 (continued )

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Fig. 11.2. BRAZING JOINTS WITH NO SPECIAL PREPARATION

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SECTION 12. SYMBOLS FOR NON-DESTRUCTIVEEXAMINATION

12.1 BASIC SYMBOLS.12.1.1 Basic examination symbols. Basic non-destructive examination symbols shall be as follows:

Type of examination Symbol

Acoustic emission AEEEddy current EELeak LEMagnetic particle MENeutron radiographic NREPenetrant PEProof PRERadiographic REUltrasonic UEVisual VE

12.1.2 Elements of the examination symbol.Theexamination symbol consists of the followingelements:

Reference line

ArrowBasic examination symbolExamine-all-around symbolNumber of tests (N)Examination in site

Tail

Specification or other reference

12.1.3 Standard location of elements.The elementsof an examination symbol shall have standardlocations with respect to each other as shown inFig. 12.1.

12.2 GENERAL PROVISIONS.12.2.1 Location significance of arrow. The arrowshall connect the reference line to the part to beexamined. The side of the part to which the arrowpoints shall be considered the arrow side of the part.The side opposite the arrow side of the part shall beconsidered the other side.

12.2.2 Location of examination symbol.12.2.2.1 Arrow side location. Examinations to bemade on the arrow side of the part shall be indicatedby the examination symbol on the side of thereference line towards the reader (see Fig. 12.2).

Fig. 12.2. EXAMINATIONS ON ARROW SIDE

12.2.2.2 Other side location. Examinations to bemade on the other side of the part shall be indicatedby the examination symbol on the side of thereference line away from the reader (see Fig. 12.3).

Fig. 12.3. EXAMINATIONS ON OTHER SIDE

12.2.2.3 Symbols on both sides. Examinations to bemade on both sides of the part shall be indicated byexamination symbols on both sides of the referenceline (see Fig. 12.4).

Fig. 12.4. EXAMINATIONS ON BOTH SIDES

12.2.2.4 Centred symbols.Where non-destructiveexamination symbols have no arrow or other sidesignificance, the testing symbols shall be centred onthe reference line (see Fig. 12.5).

Fig. 12.5. EXAMINATIONS WITH NO ARROW OROTHER SIDE SIGNIFICANCE

12.2.3 Direction of radiation. Where specified ,the direction of radiation may be shown inconjunction with the radiographic and neutralradiographic examination symbols. The direction ofradiation may be indicated by a symbol located onthe drawing at the desired angle (see Fig. 12.6).

Fig. 12.6. DIRECTION OF RADIATION

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Fig. 12.1. STANDARD LOCATION OF ELEMENTS OF NON-DESTRUCTIVE EXAMINATION

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12.2.4 Combination of non-destructive examinationsymbols and welding symbols.

12.2.4.1 Welding and non-destructive examinationsymbols. Non-destructive examination symbols andwelding symbols may be combined as shown inFig. 12.7.

Fig. 12.7. EXAMPLES OF COMBINATION OF WELDSYMBOLS AND NON-DESTRUCTIVEEXAMINATION

SYMBOLS

12.2.4.2 Non-destructive examination symbols alone.Non-destructive examination symbols may becombined as shown in Fig. 12.8.

Fig. 12.8. EXAMPLES OF COMBINATION OFSYMBOLS FOR NON-DESTRUCTIVEEXAMINATION

ALONE

12.2.4.3 Arrow side significance. Where a non-destructive examination symbol having no arrow orother side significance is combined with a symbolhaving such significance, the examination symbolsmay be combined (see Fig. 12.9).

Fig. 12.9. EXAMPLES OF COMBINATION OFSYMBOLS WITH ARROW SIDE SIGNIFICANCE AND

NO ARROW OR OTHER SIDE SIGNIFICANCE

12.2.5 Use of references.Specifications or otherreferences need not be used on examination symbolswhere the examination procedure is prescribed

elsewhere. Where a specification or other referenceis used with an examination symbol, the referenceshall be placed in the tail (see Fig. 12.10).

Fig. 12.10. USE OF REFERENCES

12.3 METHODS OF SPECIFYING EXTENT OFNON-DESTRUCTIVE EXAMINATION.

12.3.1 Specifying length of section to beexamined.

12.3.1.1 Length shown.To specify examinations ofwelds on parts where only the length of a sectionneed be considered, the length shall be shown to theright of the basic examination symbol (seeFig. 12.11).

Fig. 12.11. SHOWING LENGTH OF SECTION TOBE EXAMINED

12.3.1.2 Location shown. To show the exactlocation of a section to be examined as well as itslength, dimension lines shall be used (seeFig. 12.12).

Fig. 12.12. SHOWING LOCATION OF SECTIONTO BE EXAMINED

12.3.1.3 Examination of full length.Where the fulllength of a part is to be examined, no lengthdimension need be shown on the examinationsymbol.

12.3.1.4 Partial examination. Where less than thetotal length of a weld is to be examined withlocations to be selected by a specified procedure, thepercentage of the length to be examined shall beindicated (see Fig. 12.13).

Fig. 12.13. PARTIAL EXAMINATION

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12.3.2 Specifying number of examinations. Tospecify a number of examinations to be taken on ajoint or part at random locations, the number ofdesired examinations shall be shown in parentheses(see Fig. 12.14).

Fig. 12.14. SHOWING NUMBER OF EXAMINATIONS

12.3.3 Specifying examinations made all around ajoint. To specify examinations to be made all arounda joint, the examine-all-around symbol shall be used(see Fig. 12.15).

Fig. 12.15. EXAMINE-ALL-AROUND

12.3.4 Specifying examination of parts (areas).Non-destructive examination of parts (areas) shall beindicated by one of the following methods:

(a) Plane areas. For non-destructive examination ofan area represented as a plane on the drawing, thearea to be examined shall be enclosed by straightbroken lines having a circle at each change ofdirection. The examination symbol specifying thekind of non-destructive examination shall be usedin connection with these lines as shown in Fig.12.16. Where necessary, these enclosures shall belocated by coordinate dimensions.

Fig. 12.16. PLANE AREAS

(b) Areas of revolution. For non-destructiveexamination of areas of revolution, the area shallbe indicated by using the examine-all-aroundsymbol and appropriate dimensions. On Fig.12.17(a), the upper

symbol indicates that the bore of the flange is tobe subjected to a magnetic particle examinationfor a distance of 80 mm from the face, all theway around. The lower symbol indicates an areaof revolution to be subjected to radiographicexamination where dimensions are not availableon drawing.

The symbols on Fig. 12.17(b) indicate an area ofrevolution subject to an internal proof test andan external eddy current examination. Since nodimensions are given, the entire length is to beexamined.

(a) Dimensions specified

(b) Dimensions not specif ied

Fig. 12.17. AREAS OF REVOLUTION

12.3.5 Acoustic emission. Acoustic emission isgenerally applied to all or a large portion of acomponent, such as a pressure vessel or pipe. Thesymbol indicates application of AEE to thecomponent without specific reference to location ofsensors (see Fig. 12.18).

Fig. 12.18. ACOUSTIC EMISSION

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APPENDIX A

ABBREVIATIONS OF TERMS FOR WELDING AND ALLIED PROCESSES

TABLE A1

DESIGNATION OF WELDING AND ALLIEDPROCESSES BY LETTERS

Welding and all ied process Letterdesignation

Arc welding AWcarbon-arc welding CAWelectrogas welding EGWflux cored arc welding FCAWgas metal arc welding GMAWgas tungsten arc welding GTAWmanual metal arc welding MMAWplasma arc welding PAWstud welding SWsubmerged arc welding SAW

Brazing Bdip brazing DBflame brazing FLBfurnace brazing FBinduction brazing IBresistance brazing RBsilver brazing SB

Other welding processeselectron-beam welding EBWelectroslag welding ESWinduction welding IWlaser-beam welding LBWthermit welding TWoxy-acetylene welding OAW

Resistance welding RWhigh frequency resistance welding HFRWpercussion welding PEWprojection welding RPWresistance seam welding RSEWresistance spot welding RSW

Soldering Sdip soldering DSfurnace soldering FSinduction soldering ISiron soldering INSresistance soldering RS

Solid state welding SSWdiffusion welding DFWexplosion welding EXWforge welding FOWfr iction welding FRWhot pressure welding HPWroll welding ROWultrasonic welding USW

Thermal cutt ing TCair arc gouging AAGarc cutting ACcarbon-arc cutt ing CACflame gouging FGgas metal arc cutting GMACmetal-arc cutting MACplasma arc cutt ing PACelectron-beam cutt ing EBClaser-beam cutting LBCoxy-fuel gas cutting OFCoxygen-arc cutting AOC

Thermal spraying THSPflame spraying FLSPplasma spraying PSP

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TABLE A2

ALPHABETICAL CROSS-REFERENCE TOTABLE A1

Letterdesignation

Welding and all ied processes

AAG air arc gougingAC arc cuttingAOC oxygen-arc cuttingAW arc weldingB brazingCAC carbon-arc cutt ingCAW carbon-arc weldingDB dip brazingDFW diffusion weldingDS dip solderingEBC electron-beam cutt ingEBW electron-beam weldingEGW electrogas weldingESW electroslag weldingEXW explosion weldingFB furnace brazingFG flame gougingFCAW flux cored arc weldingFLB flame brazingFLSP flame sprayingFOW forge weldingFRW fr iction weldingFS furnace solderingGMAC gas metal arc cuttingGMAW gas metal arc weldingGTAW gas tungsten arc weldingHFRW high frequency resistance weldingHPW hot pressure weldingIB induction brazingINS iron solderingIS induction solderingIW induction weldingLBC laser-beam cuttingLBW laser-beam weldingMAC metal-arc weldingMMAW manual metal arc weldingOAW oxy-acetylene weldingOFC oxy-fuel gas cuttingPAC plasma arc cutt ingPAW plasma arc weldingPEW percussion weldingPSP plasma sprayingRB resistance brazingRPW projection weldingRS resistance solderingRSEW resistance seam weldingRSW resistance spot weldingROW roll weldingRW resistance weldingS solderingSAW submerged arc weldingSB silver brazingSSW solid state weldingSW stud weldingTC thermal cuttingTHSP thermal sprayingTW thermit weldingUSW ultrasonic welding

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APPENDIX B

DESIGN OF STANDARD SYMBOLS

NOTES to Figs B1 to B22:1. All dimensions in mil limetres.2. Unless otherwise specif ied, tolerance shall be± 1 mm or ±1° as applicable.3. All radii are minimum.

Fig. B1. REFERENCE LINE

Fig. B2. SQUARE-BUTT WELD Fig. B3. BEVEL-BUTT WELD

Fig. B4. J-BUTT WELD Fig. B5. V-BUTT WELD

Fig. B6. FILLET WELD Fig. B7. U-BUTT WELD

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Fig. B22. BACKING

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APPENDIX C

APPLICATION DRAWING

NOTE: This drawing is illustrative of techniques used and is not intended to be complete. A contact or workingdrawing would require additional views or notes about required welds on opposite side of girder.

Fig. C1. USE OF WELD SYMBOLS ON STRUCTURAL DRAWING

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