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The Field Act: Protecting California’s Schools from Seismic Hazards

The Field Act: Protecting California’s Schools from Seismic Hazards. Timothy Dawson Engineering Geologist California Geological Survey, Menlo Park. Du Bin for the New York Times. Xinjian Primary School Kindergarten (left) and Hotel (right) survived with little damage.

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The Field Act: Protecting California’s Schools from Seismic Hazards

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  1. The Field Act: Protecting California’s Schools from Seismic Hazards Timothy DawsonEngineering GeologistCalifornia Geological Survey, Menlo Park

  2. Du Bin for the New York Times Xinjian Primary School Kindergarten (left) and Hotel (right) survived with little damage

  3. 1933 Long Beach Earthquake • Occurred March 10, 1933, 5:54 PM • (timing is everything) • M 6.4 Newport – Inglewood fault zone • 120 fatalities • 120 schools in Long Beach area, 70 • destroyed • $50M (1933 dollars)

  4. Long Beach Polytechnic High School, Long Beach

  5. Alexander Hamilton Junior High School, Long Beach

  6. Jefferson Junior High School : Worst of the worst?

  7. Compton School

  8. Compton School. Note rain of bricks at the entrance

  9. Stanford School, Long Beach: A reinforced concrete seismic survivor

  10. Franklin Junior High School, Long Beach

  11. AFTERMATH 1933 - Enactment of the Field Act. Enacted as an on April 10, 1933 one month after the earthquake. 1939 - Enactment of the Garrison Act. Enacted in order to protect public school children in structures built before 1933. However, school districts not required to make necessary inspections. 1967 to Present - Various amendments. Schools required to make necessary inspections and retrofitting or abandonment of unsafe structures. Geologic investigations required in Alquist-Priolo Zones. Many other modifications….

  12. Provisions of the Field Act • Authorizes the State Architect to develop state-wide building code. • Division of the State Architect (DSA) given authority to approve or reject plans for construction of new schools and alterations to existing buildings. • California-licensed architect or structural engineer responsible for preparation of plans. • DSA reviews plans and issues certificate of compliance once project is approved. • Violation of the provision of the Act is a felony.

  13. CGS Role in the Field Act Under contract to DSA to review geotechnical and geological aspects of school sites Seismic Design (Ground motion) Landslides Surface fault rupture Liquefaction

  14. http://www.conservation.ca.gov/cgs/News/Documents/1933_EQ_poster.pdfhttp://www.conservation.ca.gov/cgs/News/Documents/1933_EQ_poster.pdf

  15. Weblinks to photo sources are in the notes window (Click “View” and “Notes page” in main Powerpoint Menu

  16. Juyuan Middle School

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