Experimental Study on Pullback Loads for Steel Pipelines Installed by Horizontal Directional Drilling
The importance of site-specific factors are often neglected which has led to significant discrepancies between expected forces and observed values during construction. Pull force estimation during Horizontal Directional Drilling (HDD) is one of the essential steps during planning and design phases of bridge projects.
View Article940m NPS 42 HDDCrossing of the Victoria Harbour
The Capital Regional District (CRD) of Victoria is constructing a new wastewater treatment facility. A pipeline was required to cross the Victoria Harbour between Ogden Point and McLoughlin Point. Michels and CCI were subcontracted to deliver the design build approach to the crossing.
View ArticleHorizontal Directional Drilling – Guidance Accuracy and Safety
Over the last three decades of a constantly improving and evolving industry, one of the main topics of conversation consistently at the forefront of the Horizontal Directional Drilling (HDD) industry is Guidance/ Steering Systems. Being able to accurately locate and guide downhole drills is not only important to ensure safe separation from existing utilities, it is also key in ensuring designed radius specifications are adhered to.
View ArticleGuided Slip Bore: Settlement and Sinkhole Development on a 5 m High Railway Embankment
Slip bore and guided slip bore trenchless pipeline installation is preferred by Engineers. These methods of installation are less prone to creating subsurface deformations when completed in favorable geotechnical conditions. Settlement of the above-ground facility being crossed is not expected.
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