Terra Geotechnical Consultants

Service Area

150-mile service radius

Confirmed Service Area

150-mile radius from Austin, TX — Covers Austin, San Antonio, Waco, College Station, Houston, and surrounding areas.

Specialties & Services

Subsurface Investigation

Soil borings, CPT testing, rock coring, and geophysical surveys for comprehensive site characterization.

Foundation Design

Shallow and deep foundation design, mat foundations, drilled shafts, and driven pile recommendations.

Slope Stability Analysis

Cut and fill slope design, retaining wall recommendations, and landslide hazard assessment.

Laboratory Testing

AASHTO/ASTM accredited soil testing including classification, strength, and compaction analysis.

Seismic Hazard Analysis

Site-specific seismic response analysis, liquefaction evaluation, and seismic design parameters.

Groundwater Studies

Hydrogeological assessment, dewatering design, and groundwater monitoring programs.

Certifications & Qualifications

Professional Engineer (PE)

Texas Board of Professional Engineers

License #PE-98765 - Active

Geotechnical Engineer (GE)

California Board - Reciprocity

License #GE-2345 - Active

AASHTO Accredited Lab

Materials Reference Laboratory

Soil Classification, Compaction, Strength

A2LA Accredited

ISO/IEC 17025 Laboratory

Certificate #3456 - Active

Professional Liability Insurance

$5,000,000 coverage per occurrence | Certificate available upon request

About the Firm

Terra Geotechnical Consultants has been serving the Central Texas construction and development community since 2008. Founded by licensed professional engineers with decades of geotechnical experience, we specialize in providing comprehensive subsurface investigation, foundation engineering, and construction materials testing services for commercial, residential, and infrastructure projects.

Our team of licensed engineers and geologists brings expertise in soil mechanics, rock mechanics, groundwater hydrology, and seismic hazard assessment. We operate an AASHTO and A2LA accredited laboratory and maintain a fleet of drilling equipment for responsive field investigation services. Our commitment to technical excellence and client service has made us a trusted partner for architects, developers, and contractors throughout Texas.

Key Personnel

RH

Dr. Robert Hansen, PE, GE

Principal / Chief Geotechnical Engineer

LP

Lisa Patel, PE

Senior Project Engineer

MG

Marcus Garcia, PG

Staff Geologist

JW

Jennifer Wong

Laboratory Manager

Client Reviews

4.9

52 reviews

5

47

4

3

1

David Martinez

Austin Development Group

Terra has been our go-to geotechnical firm for the past 6 years. Their boring reports are thorough, foundation recommendations are practical, and they're always available to answer questions during construction. Highly recommend for any commercial development.

Mixed-Use Development | Oct 2024

Sarah Thompson

Hill Country Builders

We had a challenging hillside site with expansive clay soils. Terra's slope stability analysis and pier foundation recommendations were spot-on. Dr. Hansen personally visited the site during construction to ensure proper implementation. Exceptional service.

Custom Residence | Aug 2024

James Chen

TxDOT Project Manager

Solid geotechnical work on our highway expansion project. Their AASHTO-accredited lab testing was reliable and their boring logs were well-documented. Responsive to RFIs during construction phase.

Highway Infrastructure | Jun 2024

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