1. B AKER E NGINEERING AND R ISK C ONSULTANTS, INC. ©2010 Baker Engineering and Risk Consultants, Inc. Building Blast-resistant Design Risk-based Approach Building Explosion Risk Mitigation

2. Objective  Provide cost-effective building design by managing risk rather than reducing consequence  Maximize risk reduction vs. cost  Manage Safety Resources and Schedule Planning  Develop building drawings (30%, 60%, construction drawings)

3. Design Process 1. Estimate required building capacity using idealized building model (P-i curves/ Occupant Vulnerability) and QRA results 2. Achieve efficient/inexpensive design by separating building up into key components an assessing simultaneously 3. Design roof and wall components using Single Degree of Freedom (SDOF) dynamic analysis and Applicable Response Criteria 4. Construct building-specific P-i diagram 5. Calculate Risk 6. Iterate to reduce risk and/or cost

4. Typical Deliverables  Building specific P-i diagram for new design with SBR/BIR values  Existing vs. Upgraded P-i curves  Sketches of identified structural upgrades, 30%, 60%, or final design packages

5. Risk-Based Upgrades Risk Before Upgrade = 5.2 E - 4 Risk After Upgrade = 3.4 E - 5

6. Compare Multiple Design Options (Risk vs. Cost) Cost Risk Acceptance Limit Budget Constraint Manage Risk – Reduce Risk To Building Occupants Prioritize Design Options Based on Risk Vs. Cost Propose the most optimal solution – Acceptable Risk at minimum cost