Table Of Contentइंटरनेट मानक
Disclosure to Promote the Right To Information
Whereas 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.
“जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ”
Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru
“The Right to Information, The Right to Live” “Step Out From the Old to the New”
SP 34 (1987): Handbook on Concrete Reinforcement and
Detailing [CED 2: Cement and Concrete]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”
HANDBOOK
ON
REINFORCEMENT
AND DETNLING
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN. 9 BAHADUR 8HAH 2AFAR MARG
NEW DELHI11 0 002
SP 34 : 1987
FIRST PUBLISHED AUGUST 1987
FIRST REPRINT DECEMBER 1992 t
SECOND REPRINT NOVEMBER 1995
THIRD REPRINT DECEMBER 1996
FOURTH REPRINT JULY 1997
FIFTH REPRINT MARCH 1999
0 BUREAU OF INDIAN STAND.4RDS
UDC 666.982.24(021)
ISBN 81-7061-006-O
PRICE Rs.600.00
I
PRINTED IN INDIA
AT NUTAN PRINTERS, F-89/12, OKHLA INDUSTRIAL AREA, PHASE-I, NEW DELHI-110020
AND PUBLISHED KY
BUREAU OF INDIAN STANDARDS, NEW DELHI-110 002
FOREWORD
Users of various civil engineering codes have been feeling the need for explanatory
handbooks and other compilations based on Indian Standards. The need has been
further emphasized in view of the publication of the National Building Code of India in
1970 and its implementation. The Expert Group set up in 1972 by the Department of
Science and Technology, Government of India carried out in-depth studies in various
areas of civil engineering and construction practices. During the preparation of the Fifth
Five-Year Plan in 1975, the Group was assigned the task of producing a Science and
Technology plan for research, development and extension work in the sector of housing
and construction technology. One of the items of this plan was the production of design
handbooks, explanatory handbooks and design aids based on the National Building
Code and various Indian Standards and other activities in the promotion of the National
Building Code. The Expert Group gave high priority to this item and on the
recommendation of the Department of Science and Technology, the Planning
Commission approved the following two projects which were assigned to the Bureau of
Indian Standards :
a) Development programmc on code implementation for building and civil
engineering construction, and
b) Typification for industrial buildings.
A Special Committee for Implementation of Science and Technology Projects (SCIP)
consisting of experts connected with different aspects was set up in 1974 to advise the BlS
Directorate General in identification and for guiding the development of the work. Under
the first programme, the Committee has so far identified subjects for several explanatory
handbooks/compilations covering appropriate Indian Standards codes specifications
which include the following :
Design Aids for Reinforced Concrete to IS : 456-1978 (SP : 16-1980)
Explanatory Handbook on Masonry Code (SP : 20-1981)
Explanatory Handbook
on Codes of Earthquake Engineering (IS : 1893-1975 and
IS : 4326-1976) (SP : 22-1982)
Handbook on Concrete Mixes (SP : 23-1982)
Explanatory Handbook on Indian Standard Code of Practice for Plain and Reinforced
Concrete (IS : 456-1978) (SP : 24-1983)
Handbook ‘on Causes and P r evention of Cracks in Buildings (SP : 25-1984)
Summaries of Indian Standards for Building Materials (SP : 2 -I 983)
Functional Requirements of industrial Buildings (Lighting and Ventilation)
(SP : 32-1986)
Timber Engineering (SP : 33-1986)
Water Supply and Drainage with Special Emphasis on Plumbir ng (SP : 35-1987)
Functional Requirements of Buildings*
Foundation of Buildings
Steel Code (IS : 800-1984)
Building Construction Practices
Bulk St,orage Structures in Steel
Formwork
Fire Safety
Construction Safety Practices
(iii)
Tall Buildings
Loading Code
This Handbook provides information on properties of reinforcing steel and &ta-iling
requirements, including storage, fabrication, assembly, welding and placing of reinforce-
ment in accordance with IS : 456-1978. ‘As a result of the introduction of limit state
method ‘of design for reinforced concrete structures and the concept of development
length, detailing has become extremely important as many of the design requirements are
to be’ met through detailing. This Handbook is expected to guide the designer in detailing
which include correct positioning of bare for a particular type of structural element and
preparation of bar bending schedule. The detailing requirements as specified in IS : 456-
1978 have. been brought out as applicable to different structural elements in a building
and explamed, wherever necessary. The relevant Indian Standards and other literature
available on the subject have been taken into consideration in preparing the Handbook.
The Handbook will be useful to concrete design engineers, field engineers and students of
civil engineering.
Some of the important points to be kept in view in the use of the Handbook are :
)a The reinforcement has to cater to forces (bending moment, shear force, direct
compression or direct te,nsion) at sections consistant with development length re-
quirements at the particular section. Sound engineering judgement shall be exerci-
zed while applying the provisions herein and detailing should be such that the struc-
tural element satisfies the requirements of performance for which it is meant.
Typical detailing drawings are included to illustrate one possible method of
arrangement of bars for a particular condition. They should not be construde as the
only possible method.
b) Considering the importance of ductility requirements in structures subjected to
severe earthquakes, a separate section is included on the detailing requirements for
buildings in severe earthquake zones (Zones IV and V of IS : 1893-1984).
d
4 International Standard IS0 4066-1977 ‘Buildings and civil engineering drawings---
Bar scheduling’ is reproduced iri Appendix B as a supplement to what is contained
in the Handbook.
4 The Handbook does nor .forrn part CI/ at?,* Indian SratdarJ OII Ihe srrhjwr ant/ does
not have the status of an Indian Standard. In case o/‘&~pllte ahour A~rc~rpretarion
or opinion expressed in the Handbook. the provisions o/‘relr\~atlt Irdiatl Startckartjs
only shall app!bP. The provisions yf’ the Hwdbo~~k I>nrricyrIarI,l,t ho.s~~ reIaritlSq I(.
other literature should be considererl as on(,, .sy~i~t~~t)rc~,rt1o’r
iflfi~rt~iuri~~ti
)e The Handbook is detcepxe ot serve as a companion document to the three hand-
books already dehsilbup no the subject of reinforced concrete, namely, SP : 16-1980,
SP : 23-1982 a n d SP : 24-1983.
f) AlI dimensions ar e in mm unless otherwise specified.
The Handbook is based on the first draft prepared by the Central Public Works
Depart-ment, New Delhi. Shri B. R. Narayanappa. Deputy Director, and Shri P. S.
Chadha, Officer on Special Duty, Bureau of Indian Standards (BIS). were associated
with the work. The assistance rendered by Shri A. C. Gupta, Assistant Chief Design
Engineer, National Thermal Pdwer Corporation (NTPC), New Delhi, in the preparation
of this Handbook specially in the formulation of drawings is acknowledged.
The draft Handbook was circulated for review to National Council for Cement and
Building Materials, New Delhi; Structural Engineering Research Centre, Madras; Indian
institute of Technology, Madras; Indian Institute of Technology, New Delhi; Andhra
Pradesh Engineering Research Laboratories, Hyderabad; Engmeering Construction
Corporation Ltd. Madras; Engineer-in-Chiefs Branch, Army Headquarters, New Delhi;
Engmeering Consultants (India) Limited, New Delhi; Gammon lndia Ltd, Bombay;
M/s C. R. Narayana Rae, Architects & Engineers, Madras; STUP Consultants Ltd,
Bombay; Research, Design and Standards Organization, Ministry of Railways,
Luclcnow; Irrigation Department, Government of Gujarat; M/s H. K. Sen and
Associates, Calcutta; Siddharth Shankar and Associates (Consulting Engineers), New
Delhi; Roy and Partners (Architects & Engineers), New Delhi; Shrish Malpani
(Architects & Engineers), New Delhi; and the views received were taken into
consideration while finalizing the Handbook.
CONTENTS
Page
Section 1 Steel for reinforcement 1
Section 2 Detailing functions 9
Section 3 Structural drawing for detailing 13
Section 4 Gcncral detailing requirements 2?
Section 5 Bar bending schcdulc gnidulcni( s’od dna doni’s in
dclailing) 53
Section 6 Foundations 67
Section 7 Columns x3
Section 8 Beams 97
Section 9 Floor slabs 119
Section 10 Stairs 143
Section 11 Special structurcs--dccp beams, walls, shells and
folded plates, water tanks, RC hinges, concrete pipes,
machine foundations, and shear walls 153
Section 12 Ductility requirements of earthquake resistant
building 187
Section I3 Transport, storage, fabrication, assembly and
placing of steel reinforcement 193
Section 14 Typical strucrurai drawings 205
Appendix A Welding 209
Appendix B IS0 4066-1977 Building and civil cnginccring
drawings-bar scheduling 221
Appendix C Dimensions and properties of hard-drawn steel wire
fabric and other bars 227
SECTION I
Steel for Reinforcement
