NA to SS EN 1998-1 : 2013 (ICS 91.120.25) SINGAPORE STANDARD Singapore National Annex to Eurocode 8 : Design of structures for earthquake resistance – Part 1: General rules, seismic actions and rules for buildings Published by Unless otherwise specified. #01-02 South Tower. seismic actions and rules for buildings All rights reserved. electronic or mechanical.120. no part of this Singapore Standard may be reproduced or utilised in any form or by any means.25) SINGAPORE STANDARD Singapore National Annex to Eurocode 8 : Design of structures for earthquake resistance – Part 1: General rules.sg ISBN 978-981-4353-54-0 . including photocopying and microfilming.gov. Solaris Singapore 138628 Email : standards@spring. NA to SS EN 1998-1 : 2013 (ICS 91. without permission in writing from SPRING Singapore at the address below: Standards SPRING Singapore 1 Fusionopolis Walk. Standards Council st nd 2 Dy Chairman : Mr Tan Tian Chong Member. Tang Pei Luen Mr Teoh Wooi Sin 2 COPYRIGHT Real Estate Developers’ Association of Singapore Land Transport Authority National Environment Agency Singapore Contractors Association Limited Ministry of Manpower Singapore Institute of Architects Building and Construction Authority Nanyang Technological University Association of Property and Facility Managers Association of Consulting Engineers. Standards Council 1 Dy Chairman : Mr Lee Chuan Seng Member. Standards Council Secretary : Ms Lee Hiok Hoong SPRING Singapore Members : Mr Boo Geok Kwang Er. Lim Peng Hong Mr Larry Ng Lye Hock Assoc Prof Gary Ong Khim Chye Mr Davis Ong Wee Choon Dr Tam Chat Tim Er.NA to SS EN 1998-1 : 2013 This S ingapore Standard was appr oved b y t he B uilding and C onstruction Standards C ommittee on behalf of the Singapore Standards Council on 8 February 2013. Singapore Urban Redevelopment Authority National University of Singapore Singapore Manufacturing Federation Individual Capacity JTC Corporation Singapore Institute of Surveyors and Valuers . 2013 The Building and Construction Standards Committee appointed by the Standards Council consists of the following members: Name Chairman Capacity : Mr Goh Peng Thong Member. Chan Ewe Jin Mr Chan Kok Way Er. Ismadi Mohd Mr Benedict Lee Khee Chong Ms Andris Leong Assoc Prof Leong Eng Choon Dr Lim Lan Yuan Er. Chee Kheng Chye Singapore Civil Defence Force Institution of Engineers. Singapore Individual Capacity Housing & Development Board Mr Chng Chee Beow Mr Paul Fok Mr Anselm Gonsalves Mr Desmond Hill Er. First published. Chan Ewe Jin Mr Chua Sey Kok Mr Ho Wan Boon Er. Kwong Sin Keong Mdm Neo Bian Hong Assoc Prof Gary Ong Khim Chye Er. Building and Construction Standards Committee Co-Chairman : Er. Tang Pei Luen Assoc Prof Susanto Teng Ready-Mixed Concrete Association of Singapore Institution of Engineers. Lim Peng Hong Member. Chew Keat Chuan Building and Construction Authority Secretary : Ms Lee Hiok Hoong SPRING Singapore Members : Mr Pheilip Bay Mr Sze Thiam Siong Dr Tam Chat Tim Dr Tan Guan Prof Tan Kiang Hwee Dr Tan Teng Hooi Er. Singapore Singapore Contractors Association Limited Singapore Structural Steel Society Housing & Development Board Land Transport Authority Singapore Concrete Institute Association of Consulting Engineers Singapore Setsco Services Pte Ltd Individual Capacity Individual Capacity National University of Singapore Individual Capacity JTC Corporation Nanyang Technological University Prof Richard Liew Jat Yuen National University of Singapore Er.NA to SS EN 1998-1 : 2013 The Technical C ommittee on B uilding Structure an d S ub-structure ap pointed b y t he B uilding an d Construction S tandards Committee and r esponsible f or t he pr eparation of t his standard c onsists of representatives from the following organisations: Name Capacity Chairman : Er. Sivakumaran Murugesu Co-opted Member : 3 COPYRIGHT . NA to SS EN 1998-1 : 2013 Contents Page National Foreword 6 CLAUSES NA.1 Scope 7 NA.4 References to non-contradictory complementary information 16 ANNEX NA.2 Nationally determined parameters 7 NA.ZA Ground type 17 Bibliography 18 5 COPYRIGHT .3 Decisions on the status of informative annexes 16 NA. Mr Lung Hian Hao and Mr Ng Man Hon who have contributed in one way or another to the Singapore NA. this s tandard i s ex pected t o be us ed as a r eference in t he B uilding an d Construction Authority’s ‘Approved Document – Acceptable Solutions’. Compliance with a Singapore Standard does not exempt users from legal obligations. NOTE 1. 6 COPYRIGHT . Attention is drawn to the possibility that some of the elements of this Singapore Standard may be the subject of patent rights. Dr Juneid Qureshi.NA to SS EN 1998-1 : 2013 National Foreword This N ational A nnex was prepared b y t he T echnical C ommittee on B uilding S tructure and Substructure under the purview of the Building and Construction Standards Committee. Dr Jack Pappin. s eismic ac tions and r ules f or buildings’ and is implemented with the permission of the British Standards Publishing Ltd. 2. This Singapore NA contains information on those parameters which are left open in SS EN 1998-1 for national c hoice. seismic actions and rules for buildings’. This standard is based on the UK National Annex (NA to BS EN 1998-1:2004) to ‘Eurocode 8 : Design of structures f or ear thquake r esistance – Part 1 : General r ules. At t he t ime of publ ication. Acknowledgement is made to BSI for the use of information from the above publication. Prof T Balendra. The S ingapore N A i s t o b e r ead in conjunction w ith t he SS E N 1998-1 : 20 04 – to ‘ Eurocode 8 : Design of s tructures f or ear thquake resistance – Part 1 : General rules. Mr K Thanabal. The changes in Singapore Standards are documented through the issue of either amendments or revisions. Reference can be made to other parts of BS EN 1998 where applicable. Acknowledgement is made to the contributions of the Experts Prof Pan Tso-Chien. SPRING Singapore shall not be held responsible for identifying any or all of such patent rights. Singapore Standards are subject to periodic review to keep abreast of technological changes and new technical developments. k nown as nat ionally d etermined par ameters. 1.1. 7 COPYRIGHT .(3) – 8.8.3.4.3.3(4).6(3) – 4.8.2(10) – 7.2(1)P – 5.3(2) – 3.4(1).5(2) – 7.1(4) – 5.7.2(4) – 2.7.2.4(2)P – 6.4.5(2) – 9.11.2(3) – 9.1 – 4.2(1) – 4.2.2(1) – 3.4.3.2(5) – 9.2(2)c) – 4.3.3.3.1(5) – 4. and c) references to non-contradictory complementary information.2.7.4(1) – 3.2.1(1) – 3.2.1(4) – 6.1.1.1 – 3.2(1) – 9.2(8) – 6.2.2.(2).4(2) – 9.11.1(4) – 5.2.2.5.2. Table 9.1 Scope This National Annex gives: a) the Singapore decisions for the Nationally Determined Parameters described in the following subclauses of SS EN 1998-1 : 2013: – 2.8.5.2.2(1) – 5.3.4 – 9.1.5(5)P – 6.5(7) – 9.3(1).3.1(4) – 5.2.7.2(3) – 9.1(8) – 6.2(4) – 9.3.2.1(1)P – 5.2.11.3(1) – 9. seismic actions and rules for buildings NA.NA to SS EN 1998-1 : 2013 Singapore National Annex to SS EN 1998-1 : 2013 – Eurocode 8 : Design of structures for earthquake resistance – Part 1: General rules.3(2)P – 5.7.1.2(2) – 7.2(5) – 4.2(1) – 9.3(2) – 3.2.7.2(3) – 9.1(5) – 5.2.1.2.1(1)P – 5.11.1.3(1) – 3.3(3) – 3.(3) – 10.2.2(2)b) – 4.3(1) – 3.3(4) b) the Singapore decisions on the status of SS EN 1998-1 : 2013 informative annexes.(3) – 5.5(4)P – 6.2.1.2. Table 9.2.1.3(1)P – 5.5.1(5) – 7.2(7) – 9.2(1) – 9.2.3(4).2.1(1).4(7)e) – 9.