Among critical infrastructure owners and managers, FDH has earned a superior reputation for delivering innovative, high-quality engineering, nondestructive evaluation, and construction services. FDH’s success derives from the knowledge and experience of its talented staff of PhD-level research engineers, certified field technicians, and experienced project managers.
FDH professionals are licensed throughout the United States and several U.S. territories. The company’s expertise has been honed over two decades of research innovation (including three U.S. patents and one pending) and more than 25,000 investigations of structures and foundations. Headquartered in Raleigh, NC, FDH has over 200 employees and offices nationwide.
View our company timeline: FDH 25 Years of Excellence in Structural InvestigationsContact Us
FDH is a global leader in the engineering investigation of structures and foundations. The company’s significant R&D investments, built on decades of real-world experience, have generated innovative and responsive solutions for maintaining the world’s critical infrastructure, from towers, bridges, and dams to pipelines, parking decks, buildings, and more.Learn More
FDH was established in 1994 by two engineering professors and a graduate student from North Carolina State University. The first research question the company investigated was posed by the North Carolina Department of Transportation: How do you determine the length and integrity of thousands of aging in-situ bridge piles for which no (or limited) as-built information exists? FDH developed a proprietary nondestructive test method, using dispersive wave propagation, to address this challenge. Three patents later, FDH continues to develop and deploy innovative technologies to accurately assess the health of critical infrastructure without disturbing operations.Learn More
Our leadership team comprises experienced professionals, who understand how to address the technical and financial challenges across multiple infrastructure markets, and who work closely with clients and field personnel to develop innovative solutions that deliver highest value to our customers.Learn More
FDH supports the 100% Tie-Off 24/7 Awareness Campaign, an industry-wide safety initiative to raise awareness of the 100% tie-off fall protection requirement. FDH is committed to driving home the message that there should be a zero-tolerance policy regarding this law. Many of the accidents that compromise safety in the tower industry involve situations in which the tower technician was not properly tied-off to the structure.Learn More
Since 1947 Stainless has been a leader in engineering, fabricating, erecting, and modifying communications towers worldwide. As a business division of FDH, Stainless is the broadcast industry’s go-to source for turnkey tower building projects. Stainless designs, builds, and maintains some of the tallest guyed and self-supporting towers in the world and has erected more than half of the broadcast towers standing in the U.S. today. A pioneering spirit, an expert team, and solid customer relationships built on trust drive Stainless’ continued success. Learn how Stainless helps resolve the biggest “tall tower” challenges.Visit Stainless