Dictionary of Moisture Protection & Restoration

Hydrostatic pressure: Hydrostatic pressure is the pressure equivalent to that centered on a surface by a column of water of a given height. The height of water due to its weight creates pressure on the lower areas (referred to as hydrostatic pressure). This pressure can be significant where the water table is near the surface or rises near the surface during heavy rainfalls. Water under this pressure will seek out any breaches, especially areas of weakness ( i.e. the terminations and transitions between components). These below grade components need a much better waterproofing system than the same components above grade.

Hydrostatic Control System END CHAPTER II

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