Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.
-
Upload
amia-mcintosh -
Category
Documents
-
view
217 -
download
2
Transcript of Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.
![Page 1: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/1.jpg)
Joint BARCfirst-BENS-BRMAInfrastructure Symposium
June 25, 2009
![Page 2: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/2.jpg)
Hayward Fault parallel to BART and crosses BART.
1868 last major rupture of Hayward Fault (130- to170-year return cycle).
Four earthquake scenarios most likely to damage BART:
7.0 Hayward Fault
8.0 San Andreas Fault
6.7 Concord Fault
6.7 Calaveras Fault
Bay Area Faults and BART
![Page 3: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/3.jpg)
Retrofit Locations
3
Lafayette
Transbay Tube and Associated Structures
22 Miles of Aerial Guideways
19 BART Stations
4 Train Maintenance Yards
Parking, Operations and Administration Structures
Power, Mechanical, Train Control and Communications Equipment
1 BART-Owned SF Muni Facility
![Page 4: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/4.jpg)
Aerial Guideway Vulnerability
Foundations too Small
Potential for Crumbling of Columns, Similar to Cypress Freeway
Total of 1,918 Aerial Guideway Supports
![Page 5: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/5.jpg)
Strengthen Foundations
“Jacket” Columns (10-15%)
Add Shear Keys (10-15%)
Aerial GuidewayRetrofit Concepts
Life Safety Operability
Add Piles (WhereAppropriate)
Similar StationRetrofits
![Page 6: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/6.jpg)
Engineering Earthquake
Response Team
![Page 7: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/7.jpg)
SERA Analysis
![Page 8: Joint BARCfirst-BENS-BRMA Infrastructure Symposium June 25, 2009.](https://reader036.fdocuments.in/reader036/viewer/2022062511/551421e5550346e7488b584f/html5/thumbnails/8.jpg)
Questions & Answers
BART is Committed toSafeguarding Bay Area
Transportation and Economic Well-Being
Community Relations Manager:Catherine Westphall 510-464-7595