Ductile‐iron Pipe Goes a Different Direction—Is That Normal?

Abstract

This report describes the procedure for horizontal directional drilling (HDD) and the benefits of pulling a pipeline through a borehole as opposed to digging a trench and lowering the pipe into it. A case study is mentioned where water department officials in Normal, Illinois, used HDD during the installation of 4,100 ft of new water main. The Ductile Iron Pipe Research Association (DIPRA), is highlighted in the article.