Manhole Rehabilitation

Manholes are underground chambers built to provide man-entry access to service maintain sewer and drain lines, water valves and meters, and communication and power equipment. They are subject to erosion from ground water intrusion, corrosion from liquids and gases, dynamic traffic loads as well as general deterioration from age and wear. Out of sight, their degradation is not easily monitored. When neglected, complete collapse is likely.

Occurring at least every 50-100 meters they are an integral part of each piping system. Studies have show that more than half of all pipe defects occur within 3m of either side of manholes. And, since they are in direct contact with the surface, they are often the first segment of the sewer system to result in major damage.

With the advent of effective pipe repair technologies, the defects and problems in manholes are now receiving increased attention. The leaks that are prevented by lining pipes are redirected to the next weakest part of the system, which is usually the manholes. Engineers and cities worldwide are realizing the benefit of effective repairs to manholes. They know that neglecting such an integral part of the system, by concentrating on the pipe, only shifts the problem. Having any part of the system fail means that the whole system has failed. The good news is that manholes are the easiest segment to investigate and the most effective and least costly to repair.

USSR Ltd offers a range of methods to solve any size and degree of manhole rehabititation: permafix and polyspray.