Salvage failing structures and eliminate the time, cost and safety problems of complete replacement with our systems. Contech's portfolio includes a full array of rehab/reline products for culverts, sanitary and storm sewers.

Even if it's an emergency, our bridges have proven records of success for bridge replacements.

Design Considerations for Rehabilitation versus Replacement

Rehabilitating or relining a drainage or sanitary pipeline or structure requires a site-specific analysis. There is no one-size-fits-all approach. Every reline project needs to be examined closely by qualified professionals.

From an engineering perspective, the design approach must take into account the usual design parameters and must carefully evaluate the current condition of the pipe or structure and the supporting fill that surrounds it. The primary areas where an engineer should be concerned are:

• Geometric shape and condition of existing pipeline or structure (and access structure)
• Hydraulic requirements and limitations
• Optimum shape, size and materials
• Constructability
• Design service life
• Structural analysis and design
• Specification goals

Variety of Products for More Efficient Rehabilitation

	SPAN RANGE	PRODUCT	DESCRIPTION
DRAINAGE	12” – 36”	A2™ Liner Pipe	PVC corrugated pipe with smooth interior wall
	18” – 102”	ULTRA FLO®	Spiral rib aluminum, aluminized and polymer coated steel pipe
	12” – 144”	Corrugated Metal Pipe	Corrugated aluminized and polymer coated steel and aluminum alloy helical pipe
	30” – 120”	DuroMaxx®	Steel reinforced polyethylene pipe
SEWER	12” – 36”	A2™ Liner Pipe	PVC corrugated pipe with smooth interior wall
	30” – 120”	DuroMaxx®	Steel reinforced polyethylene pipe
	30” – 120” +	SPR™ PE	Spiral-wound steel reinforced PE pipe
STRUCTURES	4’ – 20’+	Tunnel Liner Plate	Steel and aluminum 2- flanged liner plate
	5’ – 23’+	ALSP MULTI-PLATE®	Aluminum structural plate Galvanized steel structural plate
	8’-9” – 35’-5”	ALBC	Aluminum box culvert
	19’-5” – 65’	SUPER SPAN™ SUPER-PLATE® BridgeCor®	Galvanized steel structural plate long spans Aluminum structural plate long spans Deep corrugation galvanized steel structural plate
	12’ – 102’	CON/SPAN® and BEBO®	Precast concrete arches