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, compiling and distributing standards of geotechnical practice, Geotechnical training, and laboratory testing of soil and rock samples.
The Office consists of 5 Branches And 2 Specializations:
- Foundation Testing
- Geotechnical Instrumentation
- Geotechnical Laboratory
- Geophysics and Geology
- Contracts, Graphics, and Records
- Scour Critical Program
- Training and Standards
OFFICE CHIEF
Mark Willian
Phone : (916) 227-7014
Fax: (916) 227-7075
E-mail: Mark.Willian@dot.ca.gov
BRANCH CHIEFS
Foundation Testing |
Brian Liebich |
(916) 227-1000 |
|
Geotechnical Instrumentation |
Gem-Yeu Ma |
(916) 227-1080 |
|
Geophysics and Geology |
Bill Owen |
(916) 227-0227 |
|
Geotechnical Lab, Contracts, Graphics, and Records |
Yung Chung |
(916) 227-5242 |
SENIOR SPECIALISTS
| Geotechnical Standards | Craig Hannenian | (916) 227-7055 | Craig.Hannenian@dot.ca.gov |
| Geotechnical Standards | John Bowman | (916) 227-7235 | John_Bowman@dot.ca.gov |
| Scour Critical | Muhammed Luqman | (916) 227-5299 | Muhammad.Luqman@dot.ca.gov |
Training and Records |
Thang Le |
(916) 227-7179 |
The Foundation Testing Branch (FT) provides statewide foundation testing services for Structure Construction projects. Services offered by the branch include:
- Static load tests for compression, tension, and lateral capacities of piles
- Pile Dynamic Analyses
- Nondestructive testing of cast-in-drill-hole (CIDH) piles (Gamma-Gamma and Crosshole Sonic Logging)
- CIDH Pile Mitigation Review
- Pile drivability studies
- Field acceptance criteria by wave equation analysis
- Sonic Caliper Testing
- Vibration Monitoring
The Foundation Testing Web Page is Available Here
The Geotechnical Instrumentation Branch
The Geotechnical Instrumentation Branch (GI) provides specialized geotechnical instrumentation and testing services. Capabilities of the branch include:
- Slope Inclinometer Testing
- Cone penetrometer Testing
- Automated landslide monitoring stations
- Nuclear gage calibration services and radiation safety administration
- Settlement platforms
- Pressuremeter and vane shear testing
The Geotechnical Instrumentation Web Page is Available Here
The Geotechnical Laboratory is an AASHTO Materials Reference Laboratory (AMRL) accredited facility located at the Transportation Laboratory in Sacramento. The Geotechnical Laboratory is responsible for performing geotechnical testing of soil samples for Geotechnical Services.
The Geotechnical Laboratory Web Page is Available Here
Contracts, Graphics, and Records Branch
The Contracts, Graphics, and Records Branch oversees all consultant geotechnical contracts, produces geotechnically related drafting products, and maintains Geotechnical Services historical records.
The Contracts, Graphics, and Records Web Page is Available Here
The Geophysics and Geology Branch assists the Geotechnical Design offices with geologic data and recommendations using advanced geophysical testing methods.
The Geophysics and Geology Web Page is Available Here
Training, Specifications, and Legislation
The Senior Materials and Research Engineer (Specialist) for Training, Specifications, and Legislation:
- Coordinates training on geotechnical procedures and methods.
- Analyzes legislature bills that might affect Geotechnical Services.
- Participates in new product evaluation process.
- Maintains geotechnical non-standard special provisions.
The Scour Critical Program provides geological input and geotechnical analysis to Structure maintenance and Investigations Office of Hydraulics and Hydrology for bridges susceptible to scour. Our services include:
- Interpret Log of Test Borings and perform site visits to evaluate the threat of scour
- Perform detailed calculations for bridge foundations impacted by scour
- Provide mitigation options for scour critical bridges
- Recommend retrofit solutions for scour damaged bridges