BAKER ENGINEERING AND RISK CONSULTANTS, INC.

©2010 Baker Engineering and Risk Consultants, Inc.

Building Blast-resistant DesignRisk-based Approach

Building Explosion Risk Mitigation

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)

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

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

Risk-Based Upgrades

Risk Before Upgrade = 5.2 E - 4 Risk After Upgrade = 3.4 E - 5

Compare Multiple Design Options (Risk vs. Cost)

CostRisk

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