Wellpoint systems are used to lower groundwater levels to provide stable working conditions in excavations. … A wellpoint system consists of a series of closely spaced small diameter shallow wells. The wellpoints are connected to a common header pipe and are pumped with a high efficiency vacuum dewatering pump.

What is the difference between a Wellpoint and a borehole?

WHAT IS THE DIFFERENCE BETWEEN A WELLPOINT AND A BOREHOLE? A wellpoint is a polyethylene pipe with a filtered end installed into a porous soil structure. … A borehole is a shaft drilled to depths exceeding 20 metres with a large diameter casing allowing for the installation of a submersible pump to distribute the water.

What is a well point in construction?

Well Point is a well of small diameter that is used for dewatering. Parts consisting in a Well Point are a shallow shaft, a dewatering pump to draw water, a riser pipe that connects the Well Point to the surface, and a small well that fills up. The diameter of a riser pipe is around 38 to 50 mm.