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DEWATERING SYSTEM

Dewatering Well Point System

Well Point System Technical
Background

Advantages

PRODUCTS ¬ DEWATERING SYSTEM

Dewatering is the removal of water from the work area. The purpose is to prevent water from interfering with the work, and to prevent the discharge of contaminants such as suspended sediment and concrete. Dewatering may include damming, stream bypass, pumping, and/or draining the site.

BIODOS AND COOPERAT PARTNER OFFER THE NEW AND MODEREN TECHNOLOGY FOR DEWATERING SYSTEM DEWATERING WELL POINT SYSTEM EFFECTIVE, ECONOMICAL For construction sites where deep well dewatering is not required, BIODOS AND PARTNER well point (also known as spear point) dewatering system is an effective and economical way to reduce the level of the water table to the required excavation level. Well point dewatering is used to reduce the hydrostatic pressure off the back of the sheet pile wall, in conjunction with lowering the water table to the maximum excavation depth required for the construction site. Well point dewatering can effectively draw the water table down to between 3 and 8 metres depending on the type of pump set used and the type of soil conditions. The type of dewatering system required is determined by the experienced staff at BIODOS AND PARTNER and in consultation with builders and environmental consultants as to their specific site based requirements. The well point system is ideal for single and some double basement level excavations, civil works and pit excavations. BIODOS AND PARTNER equipment may be hired from one week to one year and beyond, depending on the project size and the client's scope of works. Our extensive range of dewatering pumps, filtration tanks, hoses, etc, may be hired individually or as a complete dewatering package.

WELL POINT SYSTEM TECHNICAL BACKGROUND Site dewatering is commonly required when excavations are required to extend beyond the ground water table. For shallow excavations (generally under 4 metres) well-point dewatering is often the most eficient method to achieve an adequate draw down in permeable soils. (i.e. sand, clayey sand, etc.) PVC spears (well points) are jetted around the site perimeter from ground level and later connected to a common header pipe. These spears draw water (under vacuum) from beneath the excavation. The water is then discharged in accordance with a Dewatering Management Plan (DMP), which is a requirement for the client to have prior to commencing dewatering. A filtration process is often required depending on the water quality at the discharge point, and the endings of the soil reports engaged by the client. BIODOS AND PARTNER can offer comprehensive dewatering packages which include a dewatering plan, equipment specification and recommendation, filtration and groundwater monitoring. This is completed with the builder and the relevant environmental consultants. BIODOS AND PARTNER is committed to the environment.

ADVANTAGES Quick deploy BIODOS can efficiently and effectively put a well point system in place to reduce construction downtime. Our experienced team has the know-how to do this with minimal construction downtime to the builder. Cost Effective Well point systems and ancillary dewatering equipment can be hired for short and long periods of time, and individually, to cater to the builders dewatering requirements. Environmentally sound In most site dewatering applications, the water is removed from the construction site through our deep well or well point systems and treated prior to discharge. If it is deemed necessary through consultation of the DMP and the clients environmental consultant, BIODOS AND PARTNER monitors and treats the ground water through our state-of-the art, computerized ?ltration system. This system provides real-time telemetry to ensure that water meets relevant statutory requirements.