On High Water Table

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When preparing the foundation of a building at a place near water bodies or in a location simply with more water, there are cases where we encounter a high water table.
The water table is the level below ground at which the ground is saturated with water. When dug to this point, ground water will appear around the soil and is not a desirable condition for keeping foundations stable.
When building close to a water body, the water table will also change with the time of the day. At high tide, the water table will be higher than at lower tide. Sometimes, this is useful when planning the construction work load in order to avoid digging too much when the water table is high. Additionally, a pump is necessary to pump out the extra water so excavation works can continue in a safe manner.
For architects, this high water table is a concern when building underground basements as well as any sort of semi-sub subterranean structures such as lift and escalator pits. Proper waterproofing materials and techniques are necessary in order to ensure that water does not enter these structures. Sometimes, this may involving using waterproofing concrete mixture directly and casting in one shot.

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