Who We Are

Gall Zeidler Consultants specializes in developing and executing innovative solutions for tunnel and underground projects worldwide.

Advanced Engineering Expertise

We provide geotechnical, structural, and tunnel engineering design and consulting services, program and construction management services, and on-site construction support. With our tailor-made solutions, we excel in innovatively combining conventional tunnelling (SEM / NATM / SCL), mechanical (TBM) tunnelling, and cut-and-cover methods with state-of-the-art ground improvement and waterproofing techniques to help owners and contractors overcome challenging project conditions. From complete construction to refurbishment of underground structures, we take a holistic approach in all areas of engineering and provide our clients with long lasting solutions to extend their assets’ design lives.

Our Markets

Using our broad expertise in transportation, rail and transit, power, water and wastewater, and mining projects, we produce advanced solutions and superior products from conceptual and planning phases through completion and operation.

Our Global Presence

With a diverse portfolio of major global projects, we offer a worldwide perspective while serving clients locally through our offices across four continents. Get in contact to learn more.

Contact Us

Our Values Drive Us

Discover the principles that shape our work, guide our decisions, and define who we are. Explore our Mission, Vision and Core Values.

Our Values

Meet Our Team

Our experts play an active role in industry forums and associations such as the American Society of Civil Engineers, the Underground Construction Association, the International Tunnelling and Underground Space Association, International Society of Rock Mechanics, the British Tunnelling Society, and the Tunnelling society of Canada. They regularly speak at conferences and short courses and help shape industry standards and design guidelines. Find out more about GZ’s experienced leadership and key personnel.

Our Team