University of Lethbridge Destination Project
Doublestar Drilling (DSD) was awarded the shoring scope of work for the University of Lethbridge Destination project (new Science and Academic building) due to a unique soldier pile and shotcrete with tie-back anchors shoring design based on site specific requirements. The design was based on a hybrid concept to ensure and prevent settlement issues that could arise from a lagged shoring wall and future decomposition of lagging. The hybrid system allowed for the conventional construction of solider piles, but provided both a saving of time and money compared to the original Secant Pile shoring system. https://www.youtube.com/watch?v=Sn806g1kjUM
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The project began on June 13th 2016 and the University required the shoring and excavation to be completed before September 1st 2016. With the amount of material to excavate in a short timeline the traffic on site was high. DSD’s organizational and QA/QC skills to keep daily activities and the overall project on schedule were viewed by PCL (general contractor), and the University as a key part of why the shoring scope of the project was a huge success.
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The project began on June 13th 2016 and the University required the shoring and excavation to be completed before September 1st 2016. With the amount of material to excavate in a short timeline the traffic on site was high. DSD’s organizational and QA/QC skills to keep daily activities and the overall project on schedule were viewed by PCL (general contractor), and the University as a key part of why the shoring scope of the project was a huge success.
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The soldier piling portion included 279 piles to depths between 5.2m and 17.55m and was completed on July 25th, less than 2 months from the start date. In early July, DSD started installing 161 anchors averaging 13m in length in 2 rows while shooting 2300m2 of shotcrete face.