Haag 3D Solutions has Moved!

Haag 3D Solutions has moved from Mount Laurel to Moorestown!

Jim Wiethorn featured in Nat'l Law Journal for "brilliant" exp...

Jim Wiethorn featured in Nat'l Law Journal for "brilliant" expert witness work

Haag Welcomes Larry Dillon, Vice President of Construction Con...

Haag Welcomes Larry Dillon, Vice President of Construction Consulting

Back to Case Studies

Featured Projects

Categories: Commercial
Airport Hangar Roofs Failure Assessment

Airport Hangar Roofs Failure Assessment

Haag completed a forensic evaluation of four recently constructed airplane hangar buildings which sustained metal roofing damage, as part of a subrogation investigation.

Haag engineers evaluated the design and construction of the roofs at recently constructed airplane hangar buildings.  These buildings near the coast sustained extensive damage to their metal roofs during a hurricane with wind speeds well under what the code required them to withstand. Our analysis revealed significant installation deficiencies including missing fasteners at critical edge zones and fasteners that were incorrectly anchored into the soffit instead of the eave purlins.  Analysis of the design revealed inadequate uplift resistance in two of the three wind zones.  Our research also revealed that the manufacturer had later recognized a problem with this roof system in high wind areas following the 2004 and 2005 hurricanes and developed a more robust system to address these issues, after these roofs had been constructed and failed.  Haag presented compelling evidence during mediations that led to the resolution of the subrogation phase.

Associated Consultant / Engineer:

Justin T. Kestner, P.E.

Justin T. Kestner, P.E.
President & CEO/Principal Engineer
Primary Areas of Consulting Structural EvaluationsCommercial, residential and industrial buildingsBridges, culverts, and sign structur...

View More