Integrated Blast Risk Assessment for Improved Preparedness & Response (CRTI-06-0150TD) Simon Foo, Edward Morofsky & Brian Kyle Professional & Technical Service Management Real Property Branch Ghani Razaqpur Murat Saatcioglu McMaster University University of Ottawa Public Security S&T Summer Symposium 2009, Ottawa, June 15-18.

Project Overview Screening tool: preliminary risk assessment for ranking of buildings according to risk levels Evaluation methodology: reliability-based approach for the evaluation of high-risk buildings to determine mitigation needs Retrofit technologies: guidance on the use of blast mitigation technologies Post-blast assessment: on-site evaluation of a building after a bomb blast attack Training of end-users: preparedness and emergency responders

Relevance to emergency preparedness & responder needs Emergency response Screening Post-Blast Evaluation Evaluation Retrofit

Progress: Screening Building function, Security measures, charge weight Threat Standoff distance, building geometry (length, height, number of floors), frame/wall construction, window type & percentage Vulnerability Building area, number of occupancy, affected (damaged) area with respect to vulnerability Consequence Risk Threat x Consequence Refined P-I diagrams for uniformity of the criteria for damage assessment being evaluated against available diagrams & test data

Progress: Retrofitting Experimental investigation of as-is and retrofitted structural elements by University of Ottawa with support from CERL Shock tube became operational in December 2008 Testing of first series of reinforced concrete members (slabs and columns) with and without seismic detailing Various retrofitting technologies to be considered in second series of tests

Retrofitting: Ottawa U’s Shock Tube

Retrofitting: Shock Tube Test

Progress: Evaluation Developed computer programs which apply SDOF, MDOF concentrated mass & continuum elements to analyze structural elements SDOF & MDOF models developed and being evaluated against results of commercial FE software Objective is to compare the results of these analyses with each other & with experimental data, leading to a set of recommendations on how to properly apply each method of analysis and its expected level of accuracy Conducted field tests on concrete, steel and masonry members in May 2008, November 2008 and May 2009

Progress: Post-Blast Assessment Framework for a post-blast evaluation methodology developed, including safety classification levels and the initial development of the criteria used in the classification Work underway on developing specific criteria for each type of classification and for different building types & structural systems Further development of the methodology awaits the evaluation of analysis tool and the test data

Acknowledgement Chemical, Biological, Radiological/Nuclear, and Explosives Research Technology Initiative (CRTI-06-0150TD) Centre for Security Science Project Partners: NRCan/CERL (Canadian Explosives Research Lab) RCMP Technical Security Branch McMaster University University of Ottawa ABS Consulting