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Semi-Quantitative Seismic Risk Screening Tool (SQST) for Existing Buildings

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Semi-Quantitative Seismic Risk Screening Tool (SQST) for Existing Buildings NRC Publications Archive Archives des publications du CNRC Level 2: Semi-Quantitative Seismic Risk Screening Tool (SQST) for existing buildings. Part 2: supporting technical documentation Fathi-Fazl, Reza; Cai, Zhen; Cortés-Puentes, Leonardo; Jacques, Eric; Kadhom, Bessam For the publisher’s version, please access the DOI link below./ Pour consulter la version de l’éditeur, utilisez le lien DOI ci-dessous. Publisher’s version / Version de l'éditeur: https://doi.org/10.4224/40001927 Client Report (National Research Council of Canada. Construction Research Centre); no. A1-013766, 2020-03-20 NRC Publications Archive Record / Notice des Archives des publications du CNRC : https://nrc-publications.canada.ca/eng/view/object/?id=8c271842-5dc6-4b3b-b86c-bb9659b8375c https://publications-cnrc.canada.ca/fra/voir/objet/?id=8c271842-5dc6-4b3b-b86c-bb9659b8375c Access and use of this website and the material on it are subject to the Terms and Conditions set forth at https://nrc-publications.canada.ca/eng/copyright READ THESE TERMS AND CONDITIONS CAREFULLY BEFORE USING THIS WEBSITE. L’accès à ce site Web et l’utilisation de son contenu sont assujettis aux conditions présentées dans le site https://publications-cnrc.canada.ca/fra/droits LISEZ CES CONDITIONS ATTENTIVEMENT AVANT D’UTILISER CE SITE WEB. Questions? Contact the NRC Publications Archive team at [email protected]. If you wish to email the authors directly, please see the first page of the publication for their contact information. Vous avez des questions? Nous pouvons vous aider. Pour communiquer directement avec un auteur, consultez la première page de la revue dans laquelle son article a été publié afin de trouver ses coordonnées. Si vous n’arrivez pas à les repérer, communiquez avec nous à [email protected]. Level 2 – Semi-Quantitative Seismic Risk Screening Tool (SQST) for Existing Buildings Part 2: Supporting Technical Documentation Reza Fathi-Fazl, Zhen Cai, Leonardo Cortés-Puentes, Eric Jacques, and Bessam Kadhom Published by Construction Research Centre Report No. A1-013766 This page is intentionally left blank. Report No. A1-013766 LEVEL 2 – SEMI-QUANTITATIVE SEISMIC RISK SCREENING TOOL (SQST) FOR EXISTING BUILDINGS PART 2: SUPPORTING TECHNICAL DOCUMENTATION Prepared by: Civil Engineering Infrastructure Unit Construction Research Centre National Research Council Canada Ottawa Funded by: Public Services and Procurement Canada Disclaimer: Public Services and Procurement Canada (PSPC) may reproduce this tool and may distribute such reproductions to its employees and contractors for PSPC use only. Users other than PSPC wishing to use this tool must seek written permission from the National Research Council Canada (NRC) to do so. © National Research Council Canada March 2020 Report No. A1-013766 i Report No. A1-013766 This page is intentionally left blank. ii Report No. A1-013766 ACKNOWLEDGEMENTS The authors wish to acknowledge the financial support and technical feedback from Public Services and Procurement Canada (PSPC), in the development of the Level 2 – Semi-Quantitative Seismic Risk Screening Tool (SQST). Support from Parviz Afrooz, Brian Boyd, Peter Campbell, Bruno Coté, Dextor Edwards, Simon Foo, Clive Kamichaitis, Jocelyn Paquette, Doug Stephenson, Jack Vandenberg, Dave Weidelich, and Andrew Werblinski is also gratefully acknowledged. The authors appreciate the effort made by Department of Earth Science at Carleton University in developing the seismic zones for the Level 2 – SQST. The authors acknowledge the contributions from Professor Ghasan Doudak from the Department of Civil Engineering at the University of Ottawa. Professor Doudak provided technical comments and inputs regarding definitions and descriptions of wood buildings. The authors also appreciate the editorial and technical feedback provided by Daniel Cusson and Farrokh Fazileh from the NRC Construction Research Centre. The advice of the Federal Emergency Management Agency in Washington, D.C. is greatly appreciated. iii Report No. A1-013766 This page is intentionally left blank. iv Report No. A1-013766 TABLE OF CONTENTS ACKNOWLEDGEMENTS ........................................................................................................ iii LIST OF TABLES ....................................................................................................................... ix LIST OF FIGURES .................................................................................................................... xv 1.0 Introduction .......................................................................................................................... 1 1.1 Background ............................................................................................................... 1 1.2 Intent .......................................................................................................................... 2 1.3 Organization of the supporting technical documentation ......................................... 2 2.0 Methodology for seismic risk screening of existing buildings: Structural scoring system . 3 2.1 General ...................................................................................................................... 3 2.2 Suitability of the FEMA P-154 methodology for Canada......................................... 4 Model building type ...................................................................................................4 Key building code edition ..........................................................................................7 Seismic design factors and coefficients .....................................................................9 Seismic zones ...........................................................................................................12 2.3 Level 2 – SQST methodology: structural scoring .................................................... 17 Construction of building capacity curve ..................................................................17 Determination of seismic demand spectrum ............................................................18 Calculation of peak spectral displacement ...............................................................20 Development of fragility curves ..............................................................................21 Calculation of structural basic scores ......................................................................22 Calculation of structural score modifiers .................................................................23 Determination of structural score .............................................................................23 2.4 Structural basic scores ............................................................................................. 24 Seismic zones ...........................................................................................................25 Model building types ...............................................................................................25 Parameter values for calculating structural basic scores ..........................................25 Sample calculation of structural basic score ............................................................25 Review of structural basic scores .............................................................................35 v Report No. A1-013766 2.5 Structural score modifiers ....................................................................................... 36 Building irregularity.................................................................................................38 Building design period .............................................................................................43 Original building importance ...................................................................................43 Site Class ..................................................................................................................50 Building height.........................................................................................................53 Building deterioration and age .................................................................................55 Redundancy..............................................................................................................58 Pounding ..................................................................................................................59 Remaining occupancy time ......................................................................................66 Seismic upgrading ....................................................................................................67 Seismic hazard .........................................................................................................70 2.6 Acceptable structural thresholds ............................................................................. 72 Determination of cut-off score in FEMA P-154 ......................................................72 Determination of acceptable structural thresholds ...................................................74 3.0 Methodology for seismic risk screening of existing buildings: Non-structural scoring system ........................................................................................................................................... 77 3.1 General ...................................................................................................................
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