Drilled Shaft Cistern

Drilled Shaft Cisterns are 12-ft diameter Fiber Reinforeced Polymer (FRP) tanks inserted and concrete-encased inside an auger-drilled vertical shaft of slighlty larger diameter.  Drilled shafts are suitable in self-standing ground formations (that do no require shoring

during excavation) and are characterized by rapid installation (2-3 days from start to finish).  They typically range in capacity from 2,500 to 30,000 gallons, but can have larger capacities where required. The FRP tank heights range from 4 to 30 feet, but can be taller.