IS 2502 (1963): Code of Practice for Bending and Fixing of ...

1 Disclosure to Promote the Right To InformationWhereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public.

2 ! $ ' + - Satyanarayan Gangaram Pitroda Invent a New India Using Knowledge 0 1 ' 5 Jawaharlal Nehru Step Out From the Old to the New 1 + , 1 + Mazdoor Kisan Shakti Sangathan The Right to Information, The Right to Live ! > 0 B Bhart hari N ti atakam Knowledge is such a treasure which cannot be stolen Invent a New India Using Knowledge IS 2502 (1963): code of Practice for Bending and Fixing ofBars for Concrete Reinforcement [CED 2: Cement andConcrete]IS: 2502 - 1963 ( Renflirmed 1990 ) Zedian Standard code OF I?RACTICE FOR Bending AND Fixing OF BARS FOR CONCRETE REINFORCEMENT Twelfth Reprint MARCH 1998 Gr 7 UIX @ Copyright 1964 BUREAU OF INDIAN STANDARDS MANAK BHA-VAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 May 1964 1 IS:2!

3 502-1963 (lbAmTlled 1990) Indian Standard code OF l?RACTICE FOR Bending AND Fixing OF BARS FOR CONCRETE REINFORCEMENT Joint Sectional Committee for Concrete Reinforcement, BSMDC 8 Chaitwan Representing SHRI C. P. MALIK National Buildings Construction Corporation Ltd, New Delhi SHRI I<. F. ANTIA RI. N. Dastur & Co (qivate) Ltd, SHRI n. f?. ~HATTACH.~IPJEE Weldmesh Ltd, Calcutta SHRI N. (;. DEWAN Central Public Works Department SHRI Ii. C. RAJACOP.\L.\N (.IItrrnate) SHR~ 1'. D0 RaSW4hlY Iron & Steel Control, Calcutta SHRI Ii. R. N. SW\nrY (.4ttPvvntr) Calcutta SHRI F,. N. GUPTA The Steel Re-rolling Mills Association of India, Calcutta SllRl P.)

4 I<. GLll TE National Metallurgical Laborator) (CSIR), Jamshedpur SHRI M. A. HAFE& National Buildings Organization (Ministry of \\ orks, Housing Cp: Rehabilitation) ASSISTANT DIRECTOR (DE- SIGNS) (ilIlwnale) SHRI HARC~~AND Indian Steel & Wire Products Ltd, Jamshedpur SliRI R. R. I<.4 PLISH (ffb ?tntr) JOINT DIRECTOR STANDARDS Railway board (3linistry of railways ) (B&S), RESEARCH, DESIGNS & STANDARDS ORGANIZATION SHRI Ii. N. KUDALKAR Gammon India Ltd, Bombay DR A. Ii. M~LL~K Hindustan Steel Ltd, Rourkela DR A. IWAN (AZtrmate) (Continued on page 2) BUREAU OF INDIAN STANDARDS hlANAK BHAVAN, 9 D.+ \DUR SHAH MARG NE\V DELHI llOOO? 1 L. IS:2502 -1963 (Continued /mm page 1) Meuhers Representing Sml S.

5 C. ~~.~zLJMD.~R Cannon Dunkerley t Co Ltd, New Delhi &RI S. K. C;UHI THAKURTA (AIlematc) SHRl N. H. The Concre?e Association of India, Bombay SI~RI C. J>. N. JYI NL;.\R (.lltcmate) SHWI 5121. 1 . N.\GAH!5 IIETIi Roads Wing, Ministry of Transport & Com- munications S~HI G. V~NKATIXILU (_+fEfcrhu/r) SHRI E. I<. N. NAMBIAR Directorate General of Supplies C Disposals (Ministry of. Economic & Defence Co-prdina- tion) Dr. I. C. DOS M. PAIS Cl:nDOU Central Water C Power Commission (Ministry of Irrigation C Power) SHRI Y. I<. MURTHY (Allevtwt~) SHRI Il. I<. PANTHAKY Hindustan Construction Co Ltd, Bombay SARI RAD~IEY SWAM Engineer-in-Chief s Branch, Army Headquarters PROF G.

6 S. R~MASWAMY Central Building Research Institute &SIR), Roorkee SHRI IC. SIVA PRASAP (AIfrmaie) SECRETARY Central board of Irrigation & Power, New Delhi SHRI V. M. TA~ATI Spunpipe & Construction Co (Baroda) Ltd, Baroda SHRI Y. 1,. TANDON Railway Testing & Research Centre (Railway board ), Lucknow SHRX N. M. THADANI Sahu Cement Service, New Delhi Dw H. C. VISVESVARAYA, Director, IS1 (Rx-@cio Member) Deputy Director (Bldg) Secretary SHRI A. PRITHIVX RAJ Extra .4seistant Director (Bldg), IS1 2 I : 2502 - 1963 Indian Standard code OF PRAQTICE FOR Bending AND Fixing OF BARS FOR CONCRETE REINFORCEMENT 0. FOREWORD This Indian Standard was adopted by the Inclinn Standards Institution on 21 September 1963, after the draft finalized by the joint SLctiolrnl Committee for Concrete lieinforctment lrnd been approvc~tl by the Building Division Council and th[* Structnral and Mdals Di\,ision Council.]

7 This standard is prepared with a view to assisting dcsigncrs, cnginc~s and contractors in drawing up precise bcntling schedules for reinforcement used in reinforced concrete construction, and also in the fising of rcinforcc- ment. Though, it is well appreciated that much of time and effort can bc saved on the site if rational dimensions for shaping the bars are supplied to the bar benders; different practices have been followed hitherto in drawing up the bar Bending schedule. It is attempted in this standard to unify the various practices followed and to rationalize the Bending schcdulc to correspond with metric scrics of rcinforcemcnt. Rar Bending is an operation which requires adequate -supervision, skilled workmanship and cffic ent equipment; and any attempt to carry out the work with unskilled la b our and inefficient tools will undoubtedly result in unsatisfactory work.

8 In view of this, certain recommended methods of bar Bending are also included in this standard. Though. this standard is primarily intended for the preparation of Bending schedule for reinforced concrete work, it may also be generally adopted for mild steel reinforcement used in prestresscd concrete work. The Sectional Committee responsible for the preparation of this stan- dard has taken into consideration the views of producers, consumers and technologists and has related the standard to the manufacturing and trade practices followed in the country in this,field. Due weightage has also been given to the need for international co-ordination among stan- dards prevailing in different countries of the world.

9 These considerations led the Committee to derive assistance from the following Publications: DRAFT REVISION OF 1478: 1948 Bending DIMENSIONS AND SCHEDULING OF BARS FOR THE REINFORCEMENT OF CONCRETE. British Standards Institution. 3 IS : 2502 - 1963 AC1 315-1951 MANUAL OF STANDARD PRAC-CICE FOR DETAILING REINFORCED CONCRETE STRUCTURES. American Concrete Institute. Wherever a reference to any Indian Standard appears in this code , it shall be taken as a reference to its latest version. This standard is intended chiefly to cover the technical provisions relating to Bending and Fixing of bars for concrete reinforcement, and it does not include all the necessary provisions of a contract.

10 1. SCOPE This standard covers symbols and approximate dimensions of bends, and Bending and Fixing procedures for reinforcement, The dimensioning and Bending of bars specified in this standard applies principally to reinforcement bars conforming to*IS: 432-1960 Specification for Mil(i Steel and Medium Tensile Steel Bars and Hard-Drawn Steel Wire for Concrete Reinforcement (Revised). They may also be used in the case of bars conforming to the following specifications with such modifications as may be found necessary: tIS: 1139-1959 HOT ROLLED MILD STEEL AND MEDIUM TENSILE STEEL DEFORMED BARS FOR CONCRETE REINFORCEMENT tlS: 1$%6-1961 COLD-TWIS~V% STEEL BARS FOR CONCRETE REINFOR- CEMENT 2.)