Dewatering Sydney is crucial in a lot of construction sites such as basements and foundations where you have to deal with surface water and groundwater management. The water should be controlled to ensure safe and easy accomplishment of the work on the construction site. Dewatering is the removal of subsurface and surface water from a mining or construction site. Whether you are dealing with small amounts of water or you have to control huge quantities of water, you should consider a wide range of methods to ensure adequate precautions when removing water.

Why should you dewater?

When you dewater your construction or mining site, you provide a stable and dry condition for excavations and this allows you to ensure workers’ safety and increase the stability of the soil. If sub-surface or surface waters aren’t properly collected and removed, they can pose hazards during mining or construction or later on during the cycle of the building.

Some of the damages you can incur if you do not dewater properly include the condition of the soil undergoing variations that may affect the structure of your building, becoming a season for surface flooding, dampness that could lead to unhealthy conditions and even attract termites,  and flooding that may damage other properties in the area. Designers, builders and other professionals involved in the process should ensure proper site preparation so that water is removed as necessary. Working with a slurry pump company an provide the best solution for your site.

Open sump pumping

This is a reliable choice in different situations and it is also known as the cheapest, simplest and most effective method when it comes to dewatering. A sump is an area or a hole in the ground where water is collected and pumped away for disposal.

Sumps and drains are constructed at one side or more sides of the foundation pit to collect groundwater where it can be conveyed into the sump. Water is then evacuated from the sump either mechanically or manually. This method is great for most soil and rock conditions.

A well point system

This is a popular method that features easy installation. It is relatively flexible and cheap. It is also effective and practical under most hydrologic and soil conditions. This method involves drilling wells around the construction site and placing pumps into the wells. The well point system consists of a series of smaller wells, connected by a pipe to a central suction pump. Groundwater is then abstracted through the well points from the vacuum generated by the pump.

Constructing deep wells

When a large quantity of groundwater is being removed or deep excavation is being done, dewatering Sydney may be done by building deep wells in rocks or soils where permeability is between high to moderate. Deep well systems can drain out water up to about 24m deep. The capacity of the pumps used as well as the depth, number and spacing of the deep wells could vary depending on the condition of the site. In cases where the deep wells and well points aren’t suitable methods, the use of adductors may be considered.