Super Excavators’ Microtunnel Project Wins Award
Super Excavators installed 4,312 lf of new separated storm and sanitary sewer lines using 54-in. ID RCP in five drives in downtown Columbus with its Akkerman SL60 microtunneling system. Six shafts were constructed at depths ranging from 16-35 ft. Microtunneling took place from October 2011 to June 2012. The ground conditions varied from soft sand, stiff clay, to wet sands with cobbles and boulders and ground water was present throughout all of the alignments.
The award will be presented to design lead CH2M Hill at the Design-Build Conference and Expo this fall in Dallas, Texas.
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