About Us

Houston office Reston Office Austin Office San Antonio office

From offices in Houston, Austin, and San Antonio, Texas, and Reston, Virgina, Cardno provides comprehensive structural engineering for a broad range of commercial, public and institutional projects. Over the last 40 years, we have earned a reputation of excellence by accomplishing design goals while maintaining project budgets and schedule requirements.

Our structural solutions balance practicality with innovation, often applied to difficult sites or unusual building concepts. We work across a broad range of building types, including office, retail, education, healthcare, industrial, hospitality, residential and mixed-use developments, as well as museums, theatres, laboratories, and mission critical facilities.

Having engineered millions of square feet from small specialty buildings to multi-building campuses to high-rises, our role remains the same: to bring architectural designs to reality by exploring multiple structural systems to capture the maximum market value for our clients. We are committed to being a proactive team player in the collaborative process for all phases of building design and construction to successfully meet project goals. Our cost-effective, functional structural designs are readily constructible with little disruption to surrounding sites, as well as flexible to accommodate future needs or connect to existing structures.

Cardno Structural Engineering Leadership

Robert R. Tyler, P.E. - Senior Principal / Structural Engineering Area Manager
David Carter - Structural Engineering Director of Business Development


Wally B. Ford, P.E., LEED AP - Senior Principal / Branch Manager
John D. Rohrer, P.E. - Senior Principal
Ronald Y. Chen, P.E. - Principal / Project Director
Frank Ah-Loy Lo, P.E. - Principal / Project Director
Tan D. Tran, P.E., LEED AP - Principal / Project Director


Robert Pronier - Principal / Branch Manager
D. Craig Myers, P.E., LEED AP - Principal / Project Director
Thomas P. Heffernan, P.E., LEED AP - Principal / Project Director

Austin and San Antonio

K. Mark Merryman, P.E., LEED AP - Principal / Branch Manager

About Cardno

Founded in 1945, Cardno is a professional infrastructure and environmental services company, with expertise in the development and improvement of physical and social infrastructure for communities around the world. Cardno's team includes leading professionals who plan, design, manage and deliver sustainable projects and community programs. With more than 100 offices in the Americas and more than 130 offices worldwide, Cardno provides clients with access to more than 6,000 professionals with the diverse knowledge that allows us to provide innovative and sustainable solutions that deliver lasting value. Cardno currently ranks 44th on Engineering News-Record's 2017 Top 500 Design Firms. To learn more, click here.