Groundwater (GWL) when building a house

Groundwater - what is it?

ground water - first gravitational water from the earth always existing aquifer located on the first impermeable layer. It has a free water surface and usually above it there is no solid roof of waterproof rocks. (Wikipedia)

Ground water in the void volume can be increased or decreased depending on external precipitation. Groundwater is located near the ground surface, pass through different colored sand and grit. Good water-permeability of the sand allows precipitation easily seep through, hit the ground water in the clay bed. Groundwater at different sands first 2 to 3 m, and from 20 to 25 meters depth.

Ground water level is changed to 1-2 m. in Autumn, spring. In winter, there is significantly reduced due to lack of rainfall (in the form of rain) falling inside. Groundwater is heavily dependent on the terrain and climate.

The easy accessibility of groundwater plays a significant role in the economy, a source of water for private homes, businesses, towns and cities.

Construction and groundwater

Now, even when facilities are built situ groundwater at a depth from the surface at 1 and 2 m. Always there is a risk of erosion of the basement, ground razryhlivaniya 0, is not excluded drawdown of buildings, cracks in foundation.

In order to avoid these mistakes in the design of the foundation and the entire building will learn the characteristics of the groundwater level, their volume, soil.

It is important to pay attention to the "aggressiveness" of groundwater. Ground water containing sulfates, alkalis and other chemicals, can destroy concrete completely.

Just as there are companies that can help you remove the ground water at the time of the development of excavation and pile foundation. This service is not cheap, but now the real building and in areas with groundwater.