Compare Centri-Pipe to traditional solutions

Typical replacement options involve any of the following drawbacks:

• digging and its unavoidable disruption
• sliplining with its reduced capacity
• expensive cured-in-place liners

Centri-Pipe creates a new, structurally sound concrete pipe inside the old one:

• no digging
• no liners
• no reduction of capacity
• significant savings!

Exceletech Coating & Applications, LLC is a certified contractor in Florida to install AP/M Permaform's Centri-Pipe technology. It’s called Centri-Pipe, short for centrifugally-cast concrete pipe.

The Centri-Pipe system is a spin-cast application of a proprietary concrete material on underground pipe 36" to 120" in diameter.  It is a revolutionary new process for the structural renewal of culverts and sanitary sewer pipe--without backhoes, repaving, traffic detours, flooding or hazardous construction, and realizes a significant cost savings.

Let’s face it: corrugated metal, with its propensity to rust and buckle, was not meant to last forever…20 to 30 years is its designed life.

This new pipe is 100% environmentally sound, waterproof, fully sealed from end to end. And it provides highly effective corrosion protection that can double the life of the pipe.

Before Centri-Pipe

After Centri-Pipe

How The Process Works

The Centri-pipe system as been designed for corrosion protection and complete structural renewal of storm and sanitary sewer pipe between 30" to 120" in diameter.

The process begins with an inspection by an engineer of the pipe to be remediated. Centri-Pipe’s engineer determines how thick the Centri-Pipe concrete inside the pipe should be, based on the depth and size of the pipe, depth of the local water table, water load, and other factors.

Preparation then begins. Flow through the pipe is stopped or diverted in order for gravel,mud, roots and debris to be removed.

After this, the interior is thoroughly scoured by Centri-Pipe’s high pressure spin washer. In some cases, buckling, leaks and inverts will have occurred in the existing pipe, requiring repair prior to spin casting. AP/M’s self-consolidating PL-12,000 mortar is pumped into the damaged inverts. This permanently seals the bottom of the pipe, fills inverts and makes a new structural base to keep water from leaking in or out, a necessary step many methods can’t address.

PL-12,000 leaves a new pipe floor that may be flat or contoured to the radius to enable flows. Then, Centri-Pipe’s high-speed spin caster is placed in the center of the pipe at its far end.

As the AP/M’s PL-8000 concrete is centrifugally cast evenly around the interior of the pipe, the application head is retracted by a computer-controlled motor at the properly calculated speed to insure an even thickness predetermined by the engineer. Note that the spin caster can be started and stopped as needed without joints or gaps The only thing left behind is seamless, high strength, fully structural pipe.

Centri-Pipe Case Studies

Structurally Rehabilitated
Storm Culvert

Storm and Sewer Pipe

Lining by the Centrifugally Cast Concrete Pipe Process (CCCP)
PERMACAST® CCCP SHELL DESIGN
METHODOLOGY FOR UNDERGROUND PIPE CULVERTS
Permacast® CCCP pipe/culvert renewal methodology has been independently reviewed by R&D Engineering. The following procedure provides the appropriate design calculations needed to determine the required liner thickness. This procedure includes the needed components for lining storm culverts and sanitary sewer pipe having various levels and types of duress.

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How long before
this pipe collapses?

The Economic Costs of Culvert Failures

Joseph Perrin, Jr., Chintan S. Jhaveri
Prepared for the Transportation Research Board, January 2004
As America’s infrastructure ages, the risk of failures increases. Bridge corrosion, road and utility degradation are becoming an increasing concern for agencies across the United States. Culvert pipe failures under major roads throughout the United States are no different as these catastrophic failures have resulted in sinkholes, road damage and flooding.

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Clay County Florida — SR 16

Clay County Florida — SR 16

When Tropical Storm Faye blew across Florida in 2008, stormwater rushed through one of the corrugated steel culvert pipes under State Road 16 in Clay County and began to suck the surrounding soil into the pipe.

“It created a void along the side of the road about 10 feet deep and 20 feet across. You could have put a couple of minivans in this hole,” says Spencer Townsend, project manager for the Clay and Nassau counties local sites for Transfield Services North America.

Transfield Services, a multinational Australian company, provides operations, maintenance, and asset and project management services around the world. In Clay County, it performs routine and preventive maintenance along 358 lane miles of roadway for the Florida DOT, but this project was anything but routine.

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