Integrated Blast Risk Assessment for Improved Preparedness & Response (CRTI-06-0150TD)

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 15-18.

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 preparedness 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-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