VISION

EVERY JOB IS A SELF-PORTRAIT OF THE PERSON WHO DID IT.

PACIFIC DESIGN CENTER, RED BUILDING

G.C. JONES & JONES, 2011

Excavation:

City Block 48' deep

Dewatering Method:

42 Deep Wells

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Hydroquip Designs installs and rents dewatering systems and equipment to fit any project.

Wellpoint Systems use a series of small diameter wells connected to a common suction manifold. Hundreds of wellpoints can be connected tojust one wellpoint pump. These types of systems work well in highly variable soils and in shallow aquifers where the water is drawn down veryclose to an impervious layer.

Ejectors use individual nozzle and venturi-type pumps powered by a centrally located pumping station to draw groundwater from a series of small diameter wells. Ejector systems eliminate vacuum lift limitations associated with wellpoints. This factor makes ejector systems ideal for fine-grained soils and on projects where substantial drawdown isrequired.

Wells are a groundwater control system made up of a series suitably screened and filtered collection devices, each equipped with its own submersible pumping unit. Wells are a flexible dewatering option, as they can be installed in depths as shallow as 25 feet, or go as deep as several hundred feet. Wells are best implemented when soils to be dewatered are permeable and the aquifer extends well below subgrade.

Trench Systems use a series of gravel filled trenches or “French Drains” that encompass the interior of an excavation to impede the intrusion of ground or perched water into the excavation.  Trench systems are installed throughout the excavation process and are typically extended to a depth of two feet bellow subgrade.    Trench systems are best implemented when soils to be dewatered are non-permeable and the excavation does not extend deeply into the water table.