Case Study

WRF Digester Tank Improvement

WRF Digester Tank Improvement

Pages 1 Pages

WRF Digester Tank Improvements Des Moines, Iowa Utilizing a BG40 drill rig, Case installed 1 Osterberg O-Cell Test shaft and 60 production drilled shafts within five existing digester tanks. Drilled shafts were installed with 1060mm sectional casing to a depth of 70ft below grade including a 20ft shale socket. Since the drilled shafts were installed inside the existing digester tanks, the BG40 drill rig had to be set and mobilize

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