Where the ground becomes the foundation.

Since 1959, Terratest has been transforming soil challenges into engineering solutions that drive progress. We specialize in geotechnical engineering, special foundations, and soil improvement, with a presence on three continents and more than six decades of experience solving what others consider impossible.

Our History

1959

CRAELIUS DIABOR, Inc.

Terratest was founded in 1959 as CRAELIUS DIABOR, S.A., a Spanish subsidiary of the Swedish company Svenska Diamantborrning AB.

Subsequent Decades

Foundations and Soil Investigations, ICOS

The addition of companies such as Cimentaciones y Sondeos and ICOS gradually forged an organization with unparalleled technical expertise in the field of special foundations.

Today

Full range of geotechnical services

With more than 66 years of experience, Terratest is one of the few companies in the world capable of handling the full range of geotechnical projects: from piles and micropiles to diaphragm walls, jet grouting, and soil improvement.

A New Chapter

Casais Group's Iberian Geotechnical Hub

We have recently embarked on a new phase as part of GRUPO CASAIS’s Iberian Geotechnical Hub, building on the strength of an international group with more than 65 years of experience in the construction industry.

What Defines Us

Professionalism

It’s not just a word: it’s the attribute that our own teams, clients, and partners identify as the essence of Terratest. Behind every project lies an unwavering commitment to technical rigor, reliability, and quality of execution.

Specialization

We are specialists by vocation. We do not diversify to grow; we go deeper to lead. Every technique we have mastered is the result of decades of accumulated experience gained on the most demanding sites and projects.

Human Commitment

Terratest is, above all, its people. Teams of engineers, operators, and technicians who work with the conviction that every structure must have a solid, safe, and durable foundation.

Our Vision

To be the global leader in soil engineering solutions and geotechnical risk management.

By combining our proven expertise with technological innovation, industrialization, and a genuine commitment to sustainability. Because the future of construction starts from the ground up.

Certifications and Warranties

Our commitment to excellence is supported by an integrated management system certified to the most rigorous international standards.

ISO 9001:2015 — Quality Management

Certified since 2005, we guarantee rigor in all our technical, production, and administrative processes.

ISO 45001:2018 — Occupational Health and Safety

Since 2018, we have been operating under a system that prioritizes the safety of our teams and risk prevention at every job site.

ISO 14001:2015 — Environmental Management

Since 2023, we have formalized our commitment to identifying and managing the environmental impacts of our operations.

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of experience

contributors

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with our projects

ISO

triple certification

Presence throughout the Iberian Peninsula · Complete range of geotechnical solutions

Contact the technical team