california’s next earthquake - seismic safety · 2017-08-15 · post-earthquake period. los...

8
California’s Next are you prepared? a guide for decision-makers a guide for decision-makers California’s Next are you prepared? earth earth quake quake

Upload: others

Post on 25-Jun-2020

4 views

Category:

Documents


0 download

TRANSCRIPT

California’s Next

are you prepared?

California Seismic Safety Commission

a guide for decision-makersa guide for decision-makers

California’s Next

are you prepared?

earthearthquakequake

california is Earthquakecountry ...

2

3

when they happen, managerswill be held accountable!

• Death and injuries to staff and the public• Collapse of buildings and other facilities• Disruption of emergency response• Damage from fire, flooding, or hazardous

chemical release• Loss of power, water, gas, and telephone• Shutdown of normal operations

Understand the Risk (What Can Go Wrong!)

Upgrade Vulnerable Facilities

Develop Emergency Response &Recovery Plans

Specify Desired Earthquake Performancewhen Constructing New Facilities

Encourage the Community to Prepare

• Strengthen high risk buildings• Anchor or brace critical equipment

Every Public Agency Manager Needs to ...

4

understand the risk

Courtesy TRINET

The potential intensity of future ground shaking is well-known.

Courtesy USGS

The vulnerabilityof typical build-ing constructiontypes is alsowell-known.

Wood Frame

Steel Frame

Ti lt-up

Precast Concrete

Equipment

Moderate

Low

Low

Medium

Medium

Medium

High

Medium

Strong

Medium

Medium

High

High

High

Very High

High

Very Strong

High

High

Col lapse N

Collapse N

Collapse N

Collapse N

Very High

Table of Building Vulnerability*

* This table indicates approximate vulnerabilities - specificbuilding vulnerability requires review by a qualified structuralengineer.

Ground Shaking

UnreinforcedMasonry (brick)

OlderConcrete Frame

ò Find YourBuilding Type

5

upgrade vulnerable facilities

Importantelectrical andmechanicalequipmentcan be cost-effectivelybraced andanchored toprevent damage and to minimizethe potential for prolonged dis-ruption of operations.

New Anchorage

New Bracing

Mill Valley’s City Hall and Fire Station bothoccupied an older, seismically vulnerable

concrete building. Thebuilding was upgradedto the level of essentialservice facility criteriaat a fraction of thereplacement cost whilestill preserving itshistorical value.

6

Design New Facilities for Desiredearthquake Performance

Viscous dampers wereintegrated into the 15-story steel frame of thenew Hiram W. JohnsonState Office Building inSan Francisco to provideassurance that govern-mental services would beavailable in the immediatepost-earthquake period.

Los Angeles County FireDepartment’s new Fire Com-munication & Control Facility(FCCF) was constructed usingperformance-based designcriteria, exceeding that pro-vided in the conventionalbuilding code. This base-isolated building is expectedto remain fully operationalfollowing a severe earthquake.

Designing new facilities to meet specific post-earthquakeperformance goals is the most cost-effective mitigationmeasure.

Rockwell Interna-tional has adoptedstrict performancestandards for thedesign of its newfacilities and hasretrofitted its existingbuildings and equip-ment to minimizefuture earthquakelosses.

develop emergency responseand recovery plans

7

Following the 1987 WhittierNarrows earthquake, CaliforniaFederal Savings restoredoperation of its severelydamaged headquarters throughimplementation of itsEmergency Response Plan.

encourage the communityto prepare

Prepared for the California Seismic Safety Commission by EQE International, Inc.

Photo Credits: California Federal Savings Bank, City of Mill Valley, EQE International,EQUIIS Photographic Database, Los Angeles County Fire Department, Rockwell Interna-tional, TRINET, & USGS.

Estimate Your Earthquake RiskDevelop an Earthquake Loss Reduction ProgramIntegrate Loss Reduction into YourCapital PlanningIdentity Mitigation Funding Sources(Consider Insurance Savings, Bonds, Hazard MitigationGrants, Tax Credits,...)

---

-

To Find Out How...To Find Out How...

Next StepsNext Steps

Ask for ...

A Toolkit forDecision-Makers(ssc report 99-04)

and

mitigationsuccess stories

(SSC Report 99-05)

Proposition 122 Product 2.2Earthquake Risk Management: A Guide for Decision-Makers (SSC Report 99-06)Copyright © 1999 California Seismic Safety Commission

State of CaliforniaGray Davis, Governor

1755 Creekside Oaks Drive, Suite 100Sacramento, California 95833http://www.seismic.ca.govPhone: (916) 263-5506FAX: (916) 263-0594

Seismic Safety Commission