Date of Award

Spring 5-6-2016

Document Type

Thesis

Degree Name

Master of Technology Management-Construction Management

Department

Construction Management

First Advisor

Dr. Alan Atalah

Second Advisor

Dr. Charles Wayne Unsell

Abstract

The manhole to the pipe connection is an important part of the sewer system. Any problem in the seal connecting the manhole to the pipe results into either inflow of ground water into the sewer system or outflow into the surrounding environment. The inflow of ground water on one hand increases the volume of wastewater being sent to the wastewater plant and on the other hand, the outflow leads to the contamination of the surrounding soil. Hence, the durability and longevity of the manhole to the pipe connection is crucial.

The manhole to the pipe connection generally fails due to two main reasons: external forces and internal problems. The external forces lead to the failure of the connection externally, while the internal failures occur due to the failure of the seal materials. It is important to take steps to improve the durability of the seals connecting the manhole to the pipe connections. The life of the seal is increased by creating resistance to the external forces and by bringing improvement in the internal structure of the seal materials.

A cost model was developed for the various types of the seal materials and this was done using the concept of the equivalent annual cost. The type of the seal material with the lowest equivalent annual cost was the most economical kind of the seal material.

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