Santa Clara, CA — Rehabilitation of Failed Corrugated Metal Pipe Spillways


Our purpose is to help customers choose solutions which will insure that the process fits the application and do this reliably and cost effectively. All information in this Field Report will assist the engineer to reduce cost and minimize future maintenance costs.
In addition, this Case History will help the task of communicating that these are solutions in use today with a proven track record of installation and use.

In Santa Clara, CA, the drainage department considered replacing existing corrugated metal pipe used for under-the-road storm drainage. Many of these structures have reached the end of their useful life because of deterioration of the corrugated metal pipes by corrosion. This Field Report presents an existing application where deteriorated pipes were rehabilitated using polyethylene pipe for sliplining existing corrugated metal pipe. Introduction On Stevens Canyon Road, Santa Clara, CA, a storm drainage spillway was constructed using a corrugated metal pipe (CMP). This CMP spillway was deteriorating and presented a costly dilemma. Conventional removal of the old conduit, using excavation and replacement with a new pipe, is expensive and time consuming. If the roadway was closed, the residents couldn’t get to and from their homes; this situation created a need to evaluate a less costly alternative repair method.

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