Office of Geotechnical Support
The Office of Geotechnical Support serves the Geotechnical Design Offices, Structure Design, and Structure Construction through specialized engineering geologic services, field instrumentation, pile testing, and laboratory testing of soil and rock samples.
The Office consists of four branches and one special program:
- Foundation Testing and Instrumentation Branch
- Geotechnical Laboratory, Graphics, and Records Branch
- Geophysics and Geology Branch
- Drilling Services Branch
- Scour Critical Program
Phone : (916) 227-7004
Fax: (916) 227-7075
Foundation Testing and Instrumentation
Geophysics and Geology
Geotechnical Lab, Contracts, Graphics, and Records
|Drilling Services||Dave Thomas||(916) 227-5450|
|Drilling Services||Mark Richards||(916) 227-5448|
|Scour Critical Program||Muhammed Luqman||(916) 227-5299||Muhammad.Luqman@dot.ca.gov|
Foundation Testing and Instrumentation Branch
The Foundation Testing and Instrumentation Branch provides statewide foundation testing and geotechnical instrumentation services, including:
- Pile load testing
- Pile driving analyses
- Nondestructive testing
- CIDH Pile Mitigation Review
- Pile drivability studies
- Sonic Caliper Testing
- Slope Inclinometer Testing
- Cone Penetrometer Testing
- Automated landslide monitoring stations
The Geotechnical Laboratory is an AASHTO Materials Reference Laboratory (AMRL) accredited facility located at the Transportation Laboratory in Sacramento. The Geotechnical Laboratory performs geotechnical testing of soil and rock samples for Geotechnical Services.
The Engineering Graphics Unit produces log of test borings (LOTB) plan sheets and other drafting products required to support PS&E development.
The Geotechnical Records Unit maintains the Geotechnical Services Archive (GeoDOG), which houses geotechnical information such as geotechnical reports, laboratory and field test results, and LOTB.
Geophysics and Geology Branch
The Geophysics and Geology Branch assists the Geotechnical Design offices with geologic data and recommendations using advanced geophysical testing methods.
Drilling Services Branch
The Drilling Services Branch provides statewide drilling services for Geotechnical Services (GS) and other Departmental functions such as Construction and Maintenance. Drilling Services operates standard and specialized equipment to handle the many unique and challenging investigations required to support the Department's mission.
Scour Critical Program
The Scour Critical Program provides geological and geotechnical support to the Office of Structure Maintenance and Investigations for bridges susceptible to scour, including:
- Site visits to evaluate the threat of scour
- Performing calculations for bridge foundations impacted by scour
- Providing mitigation options for scour critical bridges
- Recommending retrofit solutions for scour damaged bridges