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Mechanicsburg, PAEngineering, Surveying, and Inspections
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Engineering, Surveying, and Inspections

Building Tomorrow's Legacy, Today

Your project is our priority.

Building Our World on Solid Foundations

All-Terra Engineering, Inc. is a full-service construction materials testing (CMT) and geotechnical engineering laboratory based in Houston, Texas, founded in 2006 by President Haddis Tewolde, P.E. Backed by a senior team with more than 50 years of combined experience, All-Terra operates an A2LA-accredited laboratory and serves public agencies, developers, contractors, and universities across the Greater Houston area. Core services include construction materials testing, geotechnical engineering, and forensic evaluation of concrete.
Diverse Projects. Solutions That Last.
Critical investigations, testing, analysis, and design for a more certain world

Innovating Environmental Solutions, Engineering a Better Tomorrow
Integrated geotechnical engineering, geophysics, and hydrogeology consulting in the Pacific Northwest.

Geotechnical and environmental engineering solutions that balance cost and risk.
Geotechnical and Environmental Engineering

Technical Expertise for Tough Challenges
Our Most Powerful Solution is Trust

All Moving Forward Together.

An Independent, Locally Owned Engineering Practice.
Geotechnical consulting delivered with clarity, integrity, and genuine teamwork.

From the Ground Down - geotechnical, environmental, and construction services for the Bay Area development community.

Specialists in Deep Foundation Design, Construction, and Testing and Slope Stability Problems

Tunnels and Underground Structures Consultants

Alaska's Premier Structural, Civil, and Geotechnical Engineering Firm

Sustainable Solutions for an Evolving World

Shaping Our Communities
Proudly serving the Southern California community since 1993
Nationwide Retaining Wall Design Services