Well Point System

Well Point Systems

The Well Point System is one of the most versatile of pre-drainage methods which can pump a few gallons per minute in fine sandy silts or many thousands of gallons per minute in coarse sands and gravels.

A well point system consists of a number of well points spaced along a trench or around an excavation site, all connected to a common header, which is attached to one or more wellpoint pumps.

Well point systems are most suitable in shallow aquifers where the water level needs to be lowered no more than 15 or 20 feet. Due to the vacuum limitation of the pump, excavations that are deeper will require multiple stages of well point systems.

When designing a well point system, it is necessary to give first consideration to the physical conditions of the site to be dewatered.

Things to consider include:

  • The physical layout
  • Adjacent areas
  • Soil conditions
  • Permeability
  • The amount of water to be pumped
  • Depth to imperviousness
  • Stratification

To select the proper components of the well point system - the friction losses developed in the suction side system must be considered.

On construction projects, requirements vary drastically from one job to another. Whatever your job requirements, Griffin has the equipment available to meet your needs.

Wellpoint system for trench
Wellpoint system for excavation
Wellpoint system for sheeted excavation
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