SP 46:1988 - Engineering Drawing Practice for Schools & Colleges

Oct 23, 2026

Engineering Drawing practice material for schools and colleges, published by the Bureau of Indian Standards under SP 46:1988. The foreword explains why a consolidated student-focused publication was needed alongside IS:696, covering general principles and conventions of engineering drawing, geometrical tolerancing, and guidance on selecting fits. Notes on use clarify that figures are illustrative rather than fully dimensioned working drawings, and they include examples of first- and third-angle projections, with typical dimension and tolerance values.

LanguageEnglish

CategoryExam

FormatPDF

Pages118

Reading Time4 h 57 min

AccessFree to download

0. Foreword

Notes on the Use of This Publication

1. Illustrative figures and projections

2. Typical dimensions and tolerances

Contents

Section 1 Sizes and Layout of Drawing Sheets

Section 2 Item References on Drawings and Item Lists

Section 3 Planning of Assembly Drawings

Section 4 Folding of Drawing Prints

Section 5 Scales

Section 6 Lines

8UREAU OF INDIAN STANDARDS Engineering DrawingPractice forSchools &Colleges B U RE AU OF IN DI AN ST AN DA R DSMANAK BHAVAN,9 BAHADUR SHAH ZAFAR MARGNEW DELHI 110002 SP 46:1988 FIRST PUBLISHED MARCH1989FIRST REPRINT DECEMBER 1990SECOND REPRINT SEPTEMBER 1992THIRD REPRINT OCTOBER 1998 C BUREAU OF INDIAN STANDARDS UDC 744.43:371.623.8 ISBN 81-7061-091-2 Price Rs 275.00 PRINTED IN INDIA AT DEE KAY PRINTERS,DELHI,110015,AND PUBLISHED BYBUREAU OFINDIAN STANDARDS,9 BAHADUR SHAH ZAFAR MARG,NEW DELHI 110002 Chairman DR R.VASUDEVAN Members SHRI F.FERNANDIS(Alternate toDr R.Vasudevan) SHRI PRAKASH SINGH(Alternate toDr R.Vasudevan) SHRI N.S.CHOUDHARYSHRIJ.S.SEHMI(Alternate) DY DIRECTOR STANDARDS(WAGON-1)ASSTT DIRECTOR STANDARDS(WAGON-1)(Alternate) SHRI S.K.GIRISHRI P.JAGADISHANSHRIY.N.VERMA(Alternate) SHRI M.S.S.JOIS SHRI T.S.VENKATASHA MURTHY(Alternate) SHRIS.K.KHAN SHRI RM.MEGNATHANSHRI PJ.MEHATASHRI S.S.PURI SHRIM.R.RAMAMURTHYSHRI M.V.KANE(Alternate) DRAWING SECTIONALCOMMITTEE,EDC 20 Representing Bharat Heavy Electricals Ltd,Trichi Bharat Heavy Electricals Ltd,Bhopal Bharat Heavy Electricals Ltd,Hardwar Instrumentation Ltd,Kota Research,Design &Standards Organization(Ministry of Railways) Directorate General of Employment and Training,New DelhiDepartment of Atomic Energy,PPED,Bombay Motor Industries Co Ltd,Bangalore Keshav Deva Malviya Institute of Petroleum Exploration(ONGC),Dehra Dun NGEF Ltd,Bangalore The Institution of Engineers(India) Directorate General of Supplies and Disposals,New DelhiMinistry of Defence(R&D) SHRIM.RANGASHAI SHRI N.K.SRINIVAS(Alternate)SHRI K.R.SATHYANARAYAN(Alternate)SHRI T.NARASIMHA RAO(Alternate) SHRI HANUMANTHA RAOSHRIM.A.RABINDRA(Alternate) SHRI A.VENKOBA RAO Convener SHRI PRAKASH SINGH Members SHRI R.M.MEGNATHANSHRIM.S.S.JOIs SHRI T.S.VENKATESHA MURTHY(Alternate) SHRI S.HANUMANTHA RAODR D.SWAMINATHANPROF K.VENKATARAMAN Representing SHRLBP.RAO(Alternate) SHRI K.K.VOHRA(Alternate)SHRI R.B.SINGHHeavy Machine Building Plant,RanchiSHRI S.S.JHA(Alternate)SHRI R.K.SINHAProject&Development India Ltd,SindriSHRI B.K.JHA(Alternate)DR D.SWAMINATHANUniversity Grants Commission,New DelhiSHRIV.VISHWANADHAMTata Engineering &Locomotive Co Ltd,JamshedpurSHRIP.KRISHNASWAMY(Alternate)SHRI C.S.NAIR(Alternate)SHRIS.CHANDRASEKHARAN,Director General,BIS(Ex-officio Member)DIRECTOR(MECH ENGG),BIS Secretary SHRI S.K.NAGJoint Director(Mech Engg),BIS PANEL FOR PREPARATION OF EDUCATIONAL MATERIAL,EDC 20:P4 Representing Bharat Heavy Electricals Ltd,Hardwar NGEF Ltd,BangaloreMotor Industries Co.Ltd,Bangalore Central Machine Tool Institute,BangaloreUniversity Grants Commission,New DelhiP.S.G.College of Technology and Polytechnic,Coimbatore 0.1 In all the three types of exchanges like exchangesof goods,exchanges of services and exchanges ofinfcrmation,technical drawings form an essentialcomponent. Goods of a technical nature in national and inter-national trade nearly always need to be accompaniedby service diagrams,or other technical drawingsillustrating the components,their assembly and theiruse. Exchanges of services may involve,for example,consultancy work or the design of an assembly in one cating instructions or advice. In exchanges of information,especially wheredifferent languages are involved,the technicaldrawings can clarify ambiguities or help to resolveproblems in communicating by spoken or writtenword across language barriers. 0.2 To achieve these objectives,IS:696 Code ofpractice for general engineering drawing'wasoriginally issued in 1955 and revised twice in 1960and 1972.Since the publication of the said standard,considerable progress has been achieved in the field ofstandardization of engineering drawing by mutualagreement between various countries and has takenthe shape of firm standard.The growing internationalcooperation,introduction of foreign technology orexport o

FAQs

What is the purpose of this engineering drawing practice publication?

It consolidates relevant drawing standard information in one document for students, building on IS:696 and including geometrical tolerancing and guidance on selecting fits.

Are the figures in the document intended as fully dimensioned working drawings?

No. Except for drawings shown in Appendix A, the figures are drawn to illustrate points explained in the text, not as fully dimensioned working drawings.

Does the document include both first-angle and third-angle projection methods?

Yes. Examples of FIRST ANGLE and THIRD ANGLE methods of projections are given.

Oct 23, 2026

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