Pipe Rehabilitation

St. Paul Interceptor

St. Paul Interceptor

Scope

Michels, one of North America's largest pipe rehabilitation contractors,  restored more than a mile of sanitary sewer pipes on the St. Paul Interceptor. The project included 670 lineal feet of 56-inch, 4,418 lineal feet of 60-inch and 2,250 lineal feet of 72-inch diameter pipes.

Crews used cured-in-place pipe (CIPP) liners made of 5-8 layers of felt inside corrosion-resistant coated liners impregnated with resin. The liners were cured in place with hot water, with the exception of one installation. The 90-foot installation of 72-inch pipe had a 13 foot elevation change and was cured with steam.

Installing liners between 25 to 50 feet below ground was challenging. For example, when the 72-inch liner was filled with resin, it weighed nearly 200 pounds per foot. As a result, the crew added a special hydraulic brake to the roller setup to control the speed at which is was lowered into the manhole. In addition, one 90-foot section had a 13-percent grade change, far more than the typical 0.5 - 3 percent.

The second phase of the project had an extremely deteriorated pipe, a condition that was not known to the owner. The CIPP liner had to be re-sized and re-designed for the actual pipe conditions.

The project was completed in 12 installations ranging from 90 feet to 1,480 feet over the course of 4 months in November 2018 to February 2019. A 2,400-foot second phase was completed the following September and October.

  • Michels restored more than a mile of sanitary sewer pipes on the St. Paul Interceptor.
  • The project included 670 lineal feet of 56-inch, 4,418 lineal feet of 60-inch and 2,250 lineal feet of 72-inch diameter pipes.
  • Crews used CIPP liners made of 5-8 layers of felt inside corrosion-resistant coated liners impregnated with resin.
  • The project was completed in 12 installations ranging from 90 feet to 1,480 feet over the course of 4 months.

Projects

Michels used cured-in-place pipe (CIPP) liners to rehabilitate sewer and water lines.

Pipe Rehabilitation

Sewer Relining

Wisconsin

View Project

Sewer Relining

Michels installs a 39-inch cured-in-place pipe (CIPP) liner to rehabilitate a sewer line.

Pipe Rehabilitation

1-MN-341 Interceptor Rehabilitation

Minnesota

View Project

1-MN-341 Interceptor Rehabilitation

Pipe Rehabilitation

Plant CIPP Lining

New Jersey

View Project

Plant CIPP Lining

Pipe Rehabilitation

New Haven Sanitary Sewer Rehabilitation

Connecticut

View Project

New Haven Sanitary Sewer Rehabilitation

Michels used geopolymer mortar to rehabilitate 1,800 feet of 90-inch sanitary sewer pipe.

Pipe Rehabilitation

Lucas County Interceptor Sanitary Sewer Rehabilitation

Ohio

View Project

Lucas County Interceptor Sanitary Sewer Rehabilitation

Michels rehabilitated a deteriorating corrugated metal pipe culvert under a busy roadway. Michels prepared the walls and floor and completed the spray application of 3-inch Millikin Geospray geopolymer mortar to the 128-inch-by-73-inch-by-75-foot culvert. In total, 68,000 pounds of material was mixed and applied.

Pipe Rehabilitation

Palos Hills Culvert Rehabilitation

Illinois

View Project

Palos Hills Culvert Rehabilitation

Nothing great in the world has
been accomplished without passion.

Georg Wilhelm Friedrich Hegel

Let us show you our passion.

Contact Us