Innovations in Culvert Rehab: StifPipe for Circular Culverts (Part 2)

In Part 2 of our culvert rehabilitation podcast series, we are breaking down one of the most innovative FRP technologies in our industry: StifPipe®, QuakeWrap’s patented CFRP honeycomb liner for deteriorated corrugated metal pipe (CMP) culverts.Originally developed from decades of aerospace R&D, StifPipe’s honeycomb core acts like the web of an I-beam, while the inner and outer FRP skins act like the flanges, delivering exceptional stiffness and strength without stacking 10+ layers of carbon fabric. The result is a lightweight, corrosion-proof, stand-alone structural liner that restores the culvert’s load-carrying capacity under soil and traffic loads.In this episode, Mo will walk through:How StifPipe is designed and manufactured using aerospace-inspired honeycomb technologyWhy this liner resists internal pressure, external soil loads, corrosion, and traffic loadsHow StifPipe can be built to virtually any size or shape, including non-circular culvertsField installation advantages: lightweight sections, easy assembly, and minimal equipmentReal-world case studies like the Arc Terminal project in Alabama and a custom rough-surface liner developed for Hong KongIf you're dealing with aging CMPs or complex culvert geometries, this episode shows why StifPipe is becoming a go-to solution for DOTs and public works teams worldwide.