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STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR …

IRC:6-2017 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGESSECTION : IILOADS AND LOAD COMBINATIONS(SEVENTH REVISION)INDIAN ROADS CONGRESS2017(The Official amendments to this document would be published by the IRC in its periodical, Indian Highways which shall be considered as effective and as part of the code/guidelines/manual, etc. from the date specified therein)(incorporating all amendments published upto October, 2019)IRC: 6-2017 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES SECTION: II LOADS AND LOAD COMBINATIONS(SEVENTH REVISION)(Incorporating all amendments published upto October, 2019) published by Indian Roads Congress Kama Koti Marg, Sector-6, Puram New Delhi-110022 MARCH, 2017 Price ` 1000/- (Plus Packing and postage charges) IRC: 6-2017 First published : December, 1958 Reprinted : May, 1962 Reprinted : September, 1963 Second Revision : October, 1964 Third Revision : Metric Units: October, 1966 Reprinted : October, 196

The 7th revision of IRC: 6-2017, includes all amendments and errata published in Indian Highways up to March 2017. The Bridges Specifications and Standards Committee (BSS) in its meeting held on 20 September, 2016 at IRC HQ New Delhi approved the draft IRC-6 (7th Revision) with the observations to fine-tune the title as “Loads and Loads

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1 IRC:6-2017 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGESSECTION : IILOADS AND LOAD COMBINATIONS(SEVENTH REVISION)INDIAN ROADS CONGRESS2017(The Official amendments to this document would be published by the IRC in its periodical, Indian Highways which shall be considered as effective and as part of the code/guidelines/manual, etc. from the date specified therein)(incorporating all amendments published upto October, 2019)IRC: 6-2017 STANDARD SPECIFICATIONS AND CODE OF PRACTICE FOR ROAD BRIDGES SECTION: II LOADS AND LOAD COMBINATIONS(SEVENTH REVISION)(Incorporating all amendments published upto October, 2019) published by Indian Roads Congress Kama Koti Marg, Sector-6, Puram New Delhi-110022 MARCH, 2017 Price ` 1000/- (Plus Packing and postage charges) IRC: 6-2017 First published : December, 1958 Reprinted : May, 1962 Reprinted : September, 1963 Second Revision : October, 1964 Third Revision : Metric Units: October, 1966 Reprinted : October, 1967 Reprinted.

2 November, 1969 Reprinted : March, 1972 (Incorporates Amendment No. 1-Nov. 1971) Reprinted : February, 1974 (Incorporates Amendment No. 2-Nov. 1972) Reprinted : August, 1974 (Incorporates Amendment No. 3-April. 1974 and No. 4- August 1974) Reprinted : July, 1977 (Incorporates Amendment , 1976) Reprinted : September, 1981 (Incorporates the changes as given in detail in the last two sub-paras of introduction at page 3) Reprinted : November, 1985 Reprinted : September, 1990 Reprinted : January, 1994 Reprinted : January, 1997 Reprinted : March, 1999 Fourth Revision : December, 2000 Reprinted : April, 2002 (Incorporates amended Fig. 5 at page 23) Reprinted : August, 2004 (Incorporates up-to-date Amendments) Reprinted : August, 2005 Reprinted : April, 2006 Reprinted : September, 2009 (Incorporates Amendment No.)

3 6) Fifth Revision : November, 2010 Sixth Revision : January, 2014 (Incorporates all Amendments and Errata published upto December, 2013) Seventh Revision : March, 2017 (Incorporating all Amendments/Errata published in Indian Highways upto March, 2017) Reprinted : September, 2019 (Incorporating all Amendments published in Indian Highways upto October, 2019)(All Rights Reserved. No Part of this Publication shall be reproduced, translated of transmitted in any form or by any means without the permission of the Indian Roads Congress)Printed by I. G. Printers Pvt. Ltd, New Delhi-110020(600 Copies)IRC: 6-2017 CONTENTS Personnel of the Bridges SPECIFICATIONS and Standards Committee Introduction 1 Scope 4 201 Classification 4 202 Loads, Forces and Load Effects 5 203 Dead Load 8 204 Live Loads 10 205 Reduction in the Longitudinal Effect on Bridges Accommodating 25 more than Two Traffic Lanes 206 Foot Over Bridges, Footway, Kerb, Railings.

4 Parapet and Crash Barriers 25 207 Tramway Loading 29 208 Impact 31 209 Wind Load 33 210 Horizontal Forces due to Water Currents 40 211 Longitudinal Forces 43 212 Centrifugal Forces 47 213 Buoyancy 48 214 Earth Pressure 48 215 Temperature 56 216 Secondary Effects 59 217 Erection Effects and Construction Loads 59 218 Guidelines for Seismic Design of Road Bridges 60 219 Barge Impact on Bridges 74 220 Snow Load 80 221 Vehicle Collision Loads on Supports of Bridges, Flyover Supports 81 and Foot over Bridges 222 Indeterminate Structures and Composite Structures 82 : 6-2017 ANNEXURESANNEXURES A: Hypothetical Vehicles for Classification of Vehicles and 84 Bridges (Revised)ANNEXURES B: Combination of Loads for Limit State Design 87 ANNEXURES C: Wind Load Computation on Truss Bridge 98 SuperstructureANNEXURES D: Simplified Formula for Time Period 100 ANNEXURES E: Classification of Inland Waterways in India 101 ANNEXURES F: Sate-wise Higest Maximum and Lowest Minimum Temperature : 6-2017 PERSONNEL OF THE BRIDGES SPECIFICATIONS AND STANDARDS COMMITTEE(AS on 24th March, 2017)1 Kumar, Manoj Director General (RD) & Spl.

5 Secy. to Govt. of India, Ministry of Road Transport and Highways, Transport Bhavan, New Delhi2 (Co-Convenor) Addl. Director General, Ministry of Road Transport and Highways, Transport Bhavan, New Delhi3 Nahar, Sajjan Singh Secretary General, Indian Roads Congress (Member Secretary)Members4 Alam, Pervez COO HCC5 Arora, JMD, UPSBCL6 Bakshi, CMD Engg. Proj. (India)7 Banerjee, Chief Engineer (Reted.) MoRT&H, New Delhi8 Banerjee, Sushim DG, INSDAG9 Bansal, Shishir CPM, DTTDC Basa, Ashok MD, CEM Engg.

6 & Consultancy (P) Bhowmick, Alok MD, B&SECPL12 Bordoloi, Commissioner, PWD Assam (MGC)13 Chand, Faqir Advisor, STUP14 Dheeraj Superintending Engineer, MoRT&H15 Dohare, Chief Engineer (Reted.), MoRT&H16 Ghoshal, A. Director and Vice President, STUP Consultants (P) Ltd. Kolkata17 Gupta, Dr. Supratic Asst. Prof., IIT Delhi18 Heggade, Sr. VP Gammon India Joshi, Brig. Girish (Rep.) Engineer-in-Chief, MES20 Khanna, Shobha Executive Engineer, PWD Ujjain, Kondai, Bikshapathi Engineer-in-Chief (R&B), QC, Telangana22 Kumar, Ashwani Superintending Engineer, MoRT&H23 Kumar, Satander Scientist (Retd.), CRRI24 Pandey, Superintending Engineer, MoRT&H25 Parameswaran, Dr.

7 Lakshmy Chief Scientist (BAS), CRRI, New Delhi26 Patankar, DG(RD) & SS, (Retd.) MoRT&H New Delhi27 Pateriya, Dr. Director, NRRDAiIRC: 6-2017ii28 Porwal, Dr. (Immediate past President, IRC) ADG, BRO29 Puri, DG(RD) SS, (Retd.) MoRT&H New Delhi30 Raina, Dr. Consultant, World Bank31 Raizada. Pratap S. Vice President (Corporate Affairs). Gammon India Ltd. Mumbai32 Sharan, G. DG (RD) Spl. Secy (Retd.) MoRT&H, New Delhi33 Sharma, Member (Tech.), NHAI34 Sharma, Chief Engineer (Retd.) MoRT&H, New Delhi35 Shekhar, Saurav SA Infra Consultants Pvt. Sinha, DG(RD) SS, (Retd.) MoRT&H New Delhi37 Srivastava, Chief Engineer, MoRT&H 38 Subbarao, Dr.

8 Harshavardhan Chairman & Managing Director, Construma Consultancy (P) Ltd. Mumbai39 Tandon, Prof. Mahesh Managing Director, Tandon Consultants (P) Ltd., New Delhi40 Verma, MD, Engg. Planning Consultant Corresponding Members 1 Kand, Sunil C. Director, Kand Consultant 2 Koshi, Ninan DG(RD)SS,(Retd.) MoRT&H New Delhi 3 Manjure, Directoc, FPCC Ltd. 4 Reddi, Dr. Former JMD GIL 5 lyer. Prof. Nagesh R. Director, SERC, TN Ex-Officio Members 1 (Porwal, ) President, Indian Roads Congress, ADG, BRO2 (Kumar, Manoj) Director General (Road Development) Special Secretary, Ministry of Road Transport and Highways & Honorary Treasurer, Indian Roads Congress, New Delhi3 Nahar, Sajjan Singh Secretary General, Indian Roads Congress, New Delhi1 IRC: 6-2017 STANDARD SPECIFICATIONS AND CODE OFPRACTICE FOR ROAD BRIDGESINTRODUCTIONThe brief history of the Bridge Code given in the Introduction to Section I General Features of Design generally applies to Section II also.

9 The draft of Section II for Loads and Stresses , as discussed at Jaipur Session of the Indian Roads Congress in 1946, was considered further in a number of meetings of the Bridges Committee for finalisation. In the years 1957 and 1958, the work of finalisin the draft was pushed on vigorously by the Bridges the Bridges Committee meeting held at Bombay in August 1958, all the comments received till then on the different clauses of this Section were disposed off finally and a drafting Committee consisting of S/Shri Joshi, Nambiar, Antia and Ghosh was appointed to work in conjunction with the officers of the Roads Wing of the Ministry for finalising this Committee at its meeting held at New Delhi in September 1958 and later through correspondences finalized Section II of the Bridge Code.

10 Which was printed in 1958 and reprinted 1962 and Second Revision of Section II of the IRC:6 Code (1954 edition) included all the amendments, additions and alterations made by the Bridges SPECIFICATIONS and Standards (BSS) Committee in their meetings held from time to Executive Committee of the Indian Roads Congress approved the publication of the third Revision in metric units in Fourth Revision of Section II of the Code (2000 Edition) included all the amendments, additions and alterations made by the BSS Committee in their meetings held from time to time and was reprinted in 2002 with Amendment No. 1 reprinted in 2004 with Amendment No.


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