First-hand Investigations and Reconnaissance: The
First-hand Investigations and Reconnaissance: The South Napa Earthquake November 22, 2014
• M6.0 South Napa Earthquake in Perspective • Lessons Learned Post Earthquake Response Business Continuity Occupant Safety Property and Inventory Losses
• Break out sessions & discussion
2
Shake Map • M 6.0 Earthquake 8/24/2014 at 3:20 AM • Epicenter South of Napa with fault rupture towards Napa • 10 Seconds of strong shaking • Earthquake on Lesser known West Napa Fault • Strongest intensity in area with limited population & structures
3
Napa Earthquake – Did you Feel it?
4
Bay Area Seismic Hazard
5
Napa Region Seismic Hazard WEST NAPA FAULT RUPTURE EPICENTE R
• San Andreas Fault Capable of producing a M8 Earthquake • Rodgers Creek / Hayward Fault Capable of producing a M7 Earthquake (30 times more energy released than M6) • Concord-Green Valley Fault Capable of producing a M6.8 Earthquake • West Napa Fault Produced M6.0
6
Napa County Population 136.000
Santa Clara County Population 1,781,000 Napa x 13
NAPA COUNTY VS. SANTA CLARA COUNTY SF Bay Area Population Density
7
POST EARTHQUAKE RESPONSE AND RECOVERY Downtown Napa Building TAGGED! INSPECTED UNSAFE RESTRICTED USE
Who’s on first? 8
CITY OF NAPA - 8/27/14 515 YELLOW
116 RED
Tagged Structures
1 0
Downtown Napa
10
Modern Steel Frame Building
Exterior wall separated by 14 in. from structure
Note visible bowing of exterior wall
Loss of Operations
Exterior cladding wall not detailed to accommodate drift (Exterior cladding typically not SE responsibility for office buildings)
The Devil is in the details……
Bottom of steel deck above
Twist strap tying exterior stud wall to steel frame Looking up from below the third floor
BUSINESS CONTINUITY - CASE STUDY Target Store – Bel Aire Plaza in Napa
Red Tagged on Sunday Green Tagged on Wednesday
Open for Business!!
Damage to Tower leaning towards interior of store
Design & Construction of shoring and temporary partitions -
Strong post earthquake response plans – Red to Green tag in 72 hours !!
Automatic Response Trigger - Example
• Magnitude 6.5 or greater with epicenter within 20 miles of client site or • Magnitude 7.0 or greater with epicenter within 50 miles of client site
ShakeCast Event – Damage Summary – Facility Damage Estimates
BUSINESS CONTINUITY - WINE INDUSTRY • Significant damage to wine in barrels • $10k to $50k per barrel • 3 to 4 week estimated restacking time • 60% of wineries sustained some degree of damage
Harvest had just begun – Storage space was at a premium
Stainless Steel Storage Tanks
Suffered significant damage
OCCUPANT SAFETY – MOST VULNERABLE BUILDINGS
Unreinforced masonry buildings are some of the most vulnerable structures
Retrofitted Unreinforced Masonry Buildings – Still Sustain Damage
PROPERTY AND INVENTORY LOSSES
High Value Assets
Physical Losses and Loss of Operations
Earthquake Loss Estimation
Earthquake Loss Estimation
Rogers Creek EQ Green Valley EQ West Napa EQ
Post Earthquake Downtime
Rogers Creek EQ Green Valley EQ West Napa EQ
CONCLUSION
BREAK OUT SESSIONS
THANK YOU !
David Bonneville
Senior Principal Science/Technology Practice Area Leader
Direct 415.354.6402 Email [email protected]
David Bonneville is a Senior Principal of Degenkolb and, in his 34-year career, has earned the highest respect of his peers for his technical expertise and contributions to the profession, particularly in the continual improvement of the seismic provisions of the building code. He is past chairman of the Seismology Committee for the Structural Engineers Association of California, a member of the Lateral Forces Advisory Committee for the California Building Standards Commission, and current Chair of the Provisions Update Committee for the Building Seismic Safety Council (NIBS). Mr. Bonneville is especially known for his expertise in helping building owners with large inventories develop seismic risk reduction programs. He has done this for many years for Hewlett-Packard for their facilities worldwide and has managed the seismic hazard reduction program for other notable clients, including Intel, Agilent, the U.S. General Services Administration, and the California Department of General Services.
Roger Parra Principal
Direct 415.354.6422 Email [email protected]
Roger's experience includes design of new structures and seismic strengthening of existing structures. He also has strong experience in seismic analysis and seismic evaluations of existing structures. He has an extensive portfolio in highly specialized facilities such as manufacturing sites and laboratories. He has worked at length implementing the seismic upgrade program for technology sector clients.
Laurie Johnston Principal
Direct 415.354.6427 Email [email protected]
Laurie Johnston is a Principal at Degenkolb after receiving her Master’s degree in Structural Engineering at the University of California, Berkeley. Laurie has more than 15 years of experience in the science and technology sector. She has conducted evaluations of numerous buildings for Fortune 100 companies with global building portfolios and retrofitted a wide range of buildings from warehouses, to office buildings, research facilities to continuously occupied manufacturing spaces with sensitive equipment.
Adrian Nacamuli Associate Principal
Direct 415.354.6460 Email [email protected]
Adrian Nacamuli joined Degenkolb in 1999 after receiving his Master of Engineering degree from the University of California, Berkeley. His experience includes seismic evaluation and strengthening of existing structures, design of wood, masonry, concrete and steel structures, construction administration, design of temporary soil shoring, non-linear analysis of building structures, and advanced modeling and analysis of complex building components. Adrian leads Degenkolb’s Advanced Technology team, which works with Science and Technology clients on customized base isolation systems and seismic certification for critical equipment and network operations.
• M6.0 South Napa Earthquake in Perspective • Lessons Learned Post Earthquake Response Business Continuity Occupant Safety Property and Inventory Losses
• Break out sessions & discussion
2
Shake Map • M 6.0 Earthquake 8/24/2014 at 3:20 AM • Epicenter South of Napa with fault rupture towards Napa • 10 Seconds of strong shaking • Earthquake on Lesser known West Napa Fault • Strongest intensity in area with limited population & structures
3
Napa Earthquake – Did you Feel it?
4
Bay Area Seismic Hazard
5
Napa Region Seismic Hazard WEST NAPA FAULT RUPTURE EPICENTE R
• San Andreas Fault Capable of producing a M8 Earthquake • Rodgers Creek / Hayward Fault Capable of producing a M7 Earthquake (30 times more energy released than M6) • Concord-Green Valley Fault Capable of producing a M6.8 Earthquake • West Napa Fault Produced M6.0
6
Napa County Population 136.000
Santa Clara County Population 1,781,000 Napa x 13
NAPA COUNTY VS. SANTA CLARA COUNTY SF Bay Area Population Density
7
POST EARTHQUAKE RESPONSE AND RECOVERY Downtown Napa Building TAGGED! INSPECTED UNSAFE RESTRICTED USE
Who’s on first? 8
CITY OF NAPA - 8/27/14 515 YELLOW
116 RED
Tagged Structures
1 0
Downtown Napa
10
Modern Steel Frame Building
Exterior wall separated by 14 in. from structure
Note visible bowing of exterior wall
Loss of Operations
Exterior cladding wall not detailed to accommodate drift (Exterior cladding typically not SE responsibility for office buildings)
The Devil is in the details……
Bottom of steel deck above
Twist strap tying exterior stud wall to steel frame Looking up from below the third floor
BUSINESS CONTINUITY - CASE STUDY Target Store – Bel Aire Plaza in Napa
Red Tagged on Sunday Green Tagged on Wednesday
Open for Business!!
Damage to Tower leaning towards interior of store
Design & Construction of shoring and temporary partitions -
Strong post earthquake response plans – Red to Green tag in 72 hours !!
Automatic Response Trigger - Example
• Magnitude 6.5 or greater with epicenter within 20 miles of client site or • Magnitude 7.0 or greater with epicenter within 50 miles of client site
ShakeCast Event – Damage Summary – Facility Damage Estimates
BUSINESS CONTINUITY - WINE INDUSTRY • Significant damage to wine in barrels • $10k to $50k per barrel • 3 to 4 week estimated restacking time • 60% of wineries sustained some degree of damage
Harvest had just begun – Storage space was at a premium
Stainless Steel Storage Tanks
Suffered significant damage
OCCUPANT SAFETY – MOST VULNERABLE BUILDINGS
Unreinforced masonry buildings are some of the most vulnerable structures
Retrofitted Unreinforced Masonry Buildings – Still Sustain Damage
PROPERTY AND INVENTORY LOSSES
High Value Assets
Physical Losses and Loss of Operations
Earthquake Loss Estimation
Earthquake Loss Estimation
Rogers Creek EQ Green Valley EQ West Napa EQ
Post Earthquake Downtime
Rogers Creek EQ Green Valley EQ West Napa EQ
CONCLUSION
BREAK OUT SESSIONS
THANK YOU !
David Bonneville
Senior Principal Science/Technology Practice Area Leader
Direct 415.354.6402 Email [email protected]
David Bonneville is a Senior Principal of Degenkolb and, in his 34-year career, has earned the highest respect of his peers for his technical expertise and contributions to the profession, particularly in the continual improvement of the seismic provisions of the building code. He is past chairman of the Seismology Committee for the Structural Engineers Association of California, a member of the Lateral Forces Advisory Committee for the California Building Standards Commission, and current Chair of the Provisions Update Committee for the Building Seismic Safety Council (NIBS). Mr. Bonneville is especially known for his expertise in helping building owners with large inventories develop seismic risk reduction programs. He has done this for many years for Hewlett-Packard for their facilities worldwide and has managed the seismic hazard reduction program for other notable clients, including Intel, Agilent, the U.S. General Services Administration, and the California Department of General Services.
Roger Parra Principal
Direct 415.354.6422 Email [email protected]
Roger's experience includes design of new structures and seismic strengthening of existing structures. He also has strong experience in seismic analysis and seismic evaluations of existing structures. He has an extensive portfolio in highly specialized facilities such as manufacturing sites and laboratories. He has worked at length implementing the seismic upgrade program for technology sector clients.
Laurie Johnston Principal
Direct 415.354.6427 Email [email protected]
Laurie Johnston is a Principal at Degenkolb after receiving her Master’s degree in Structural Engineering at the University of California, Berkeley. Laurie has more than 15 years of experience in the science and technology sector. She has conducted evaluations of numerous buildings for Fortune 100 companies with global building portfolios and retrofitted a wide range of buildings from warehouses, to office buildings, research facilities to continuously occupied manufacturing spaces with sensitive equipment.
Adrian Nacamuli Associate Principal
Direct 415.354.6460 Email [email protected]
Adrian Nacamuli joined Degenkolb in 1999 after receiving his Master of Engineering degree from the University of California, Berkeley. His experience includes seismic evaluation and strengthening of existing structures, design of wood, masonry, concrete and steel structures, construction administration, design of temporary soil shoring, non-linear analysis of building structures, and advanced modeling and analysis of complex building components. Adrian leads Degenkolb’s Advanced Technology team, which works with Science and Technology clients on customized base isolation systems and seismic certification for critical equipment and network operations.
