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A major concern among third party owners when trenchless projects are constructed near their infrastructure is settlement. Settlement of the surface can have detrimental effects on roads, railways, buildings, pipelines or other facilities. In the past trenchless installation methods have been the preferred method of these third party owners to cross beneath their infrastructure because of the less intrusive nature of the construction.

The focus of this article is to review the pipe thrusting requirements for small overcut (or annulus) applications. Since the overcut is generally smaller than that of horizontal directional drilling (HDD) there is a concern of friction dominating the total thrust force required for installation or retraction.

Most commonly overlooked part of any Horizontal Directional Drill (HDD) design is the product pipe pullback support. Design of this part of the process can be just as important as the downhole design for a successful bore-path installation, or even more so.

"As President, I am honored to receive the news that our company has been named one of Canada’s Best Managed Companies for the 10th year in a row." Brent Goerz, President, CCI Inc.