Dunkirk, MD — Rehabilitation of Failed Corrugated Metal Spillway Pipe

Dunkirk, MD cmp dam spillway

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 Field Report will help the task of communicating that these are solutions in use today with a proven track record of installation and use.

Abstract
Many small to medium sized dams constructed in the 1960s and 1970s utilized corrugated metal pipe conduits for the principal spillway. Many of these structures have reached the end of their useful life because of deterioration of the pipes by corrosion. This Field Report presents an existing application where deteriorated pipes were rehabilitated using polyethylene pipe for sliplining existing spillways.

Introduction
Ferry Landing Woods Homeowners Association, Dunkirk, MD had a corrugated metal pipe spillway that was deteriorating and presented a costly dilemma. Conventional methods were expensive and time consuming. There was a need to evaluate a less costly alternative repair method.

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