1. 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

2. 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

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

4. 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

5. 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

6. Retrofitting: Ottawa U’s Shock Tube

7. Retrofitting: Shock Tube Test

8. 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

17. 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

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