Workers reline a culvert using Contech Engineered Solutions Materials.

Reline Done Right™

As our infrastructure ages, the roadway, water management and sewer control systems are deteriorating and losing integrity. Maintaining these critical structures is a major challenge. Today, perhaps more than ever, keeping our infrastructure safe and workable with limited financial resources requires innovative solutions. Replacement can be costly and time consuming. Contech makes it easy. We make it our business to know the ideal solution for you - inside and out.

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Effective Relining Solutions for Infrastructure Renewal

Design Considerations for Rehabilitation versus Replacement

Rehabilitating or relining a drainage or sanitary pipeline or culverts 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

Efficient Rehabilitation Solutions

	SPAN RANGE	PRODUCT	DESCRIPTION
DRAINAGE	12” – 36”	A2^™ Liner	PVC corrugated pipe with smooth interior wall
	18” – 102”	ULTRA FLO^®	Spiral rib aluminum, aluminized and polymer coated steel pipe
	12” – 144”	HEL-COR® & CORLIX®	Corrugated aluminized and polymer coated steel and aluminum alloy helical pipe
	30” – 120”	DuroMaxx^®	Steel reinforced polyethylene pipe
SEWER	12” – 36”	A2^™ Liner	PVC corrugated pipe with smooth interior wall
SEWER	30” – 120”	DuroMaxx^®	Steel reinforced polyethylene pipe
STRUCTURES	4’ – 20’+	TLP	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

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

A culvert being relined with DuroMaxx steel reinforced polyethylene (SRPE) pipe.

Relining with Steel Reinforced Polyethylene

Designed with a smooth inner wall for outstanding hydraulic capacity, DuroMaxx® pipe provides the properties necessary for long-term service and performance in the most demanding environments.

CMP and PVC Pipe for Pipe Reline

Lining inadequate or failing structures with corrugated metal material or plastic pipe uses little of the available area, thereby preserving the maximum amount of the original opening. Due to the hydraulic efficiency of Contech products, often a smaller structure provides the same hydraulic capacity as the original because of the low Manning “n” factors of A-2000™ and A2™ Liner PVC pipes and HEL-COR^® and ULTRA FLO^® CMP. Existing culverts and arches are generally lined with structures of the same shape, though slightly smaller in size. Rectangular openings can be lined with round, elliptical or pipe arch structures. Corrugated metal structures can fit almost any existing shape.

DuroMaxx steel reinforced polyethylene (SRPE) pipe

Pipe Reline Solutions for Storm, Sanitary Sewers and Small Culverts

Reline drainage structures with hydraulically efficient CORLIX® or A2™ Liner pipe. DuroMaxx® SRPE, ULTRA FLO® and HEL-COR® are available in standard diameters through 120” (custom up to 144" for HEL-COR®). Special diameters are also available in both products. The PVC pipe systems, A-2000™ and A2™ Liner Pipe — used for both drainage structures and sanitary sewers—are available through 36” diameter.

Concrete drainage tunnel entrance surrounded by greenery, under a gravel slope with overhead utility lines.

Martin County Reline

Warfield, Kentucky

Two large black pipes buried in a trench with sunlight streaming across them.

La Salle County Reline

Cotulla, Texas

Large metal pipe being installed at a construction site with a crane, ladder, and visible cloudy sky.

Miami-Dade County Emergency Reline

Miami, Florida

Rows of large black drainage pipes are stacked on grassy ground, with a construction site and industrial building in the background.

Livonia West Commerce Center Reline

Livonia, Michigan

A culvert with water flowing through in a snowy forested area, with bare trees and a partially snow-covered ground.

Wheeling & Lake Erie Railway Rehabilitation

Medina, Ohio

Construction workers in hard hats install large culvert pipes with the help of an excavator at a snowy worksite.

Gleneagles Village Parkway Over Dry Creek

Highlands Ranch, Colorado

Corrugated black pipe being installed into a concrete culvert at a construction site, surrounded by dirt and wooden supports.

Florida East Coast Railway Culvert Reline

Jacksonville, Florida

Large and small corrugated pipes emerging from a soil and rock embankment, with water flowing through the larger pipe.

The Fields Park Culvert Replacement

Broadview Heights, Ohio

Construction site with three large metal drainage pipes, workers in orange vests, a white truck, and surrounding dirt terrain.

BNSF Alliance IMF Expansion

Haslet, Texas

Construction worker installs a large pipe in a trench near heavy machinery at a building site.

Cornia Drive

South Weber, Utah

Project Design Worksheet