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Coast-to-coast, engineers and contractors rely on CMP (Corrugated Metal Pipe) for culverts, storm sewers, stormwater conveyance, small bridges, conduits and stormwater detention systems.  No other type of drainage structure offers the range of structural strength that is available with CMP Pipe—it performs where rigid pipes fail. 


Terrain Civil proudly partners with Contech Engineering for our corrugated metal pipe and fittings for many reasons; and one of the biggest is access to underground detention systems, water quality units, separators, and a whole host of manufactured steel and precast products that help you get the job done right and up to specifications. 


From driveway culverts to variable height slotted drain, fabricated fittings to trash racks and anti-vortex devices, Terrain Civil offers a full range of custom accessories to satisfy the stringent requirements of the modern job site.  We offer galvanized, aluminized (Alt2 – required for TDOT projects) and asphaltic coatings on all of our drain pipe offerings as well as arched pipe.  We can also provide custom fabrication for standpipes for sinkholes, pond risers, anti seep collars and flared end sections.


Terrain Civil strives to be a resources in all of your projects,  whether it's simple or challenging.  Our most requested documents can be found here.  From product catalogs to submittal packets, installation guidelines and technical drawings.  If you can't find what you need, please give any of our knowledgeable staff a call at 615-649-8809 or reach out via email to and we will make sure your request is promptly addressed.

Product Catalogs


Corrugated Metal Pipe Specs

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