The phenomenon of hydrostatic pressure

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Different soils drain differently. Some hold tonnes of water, and others will let the liquid filter through. A geotechnical report helps outline soils and possible contaminants and chemicals that may need to be addressed before selecting a below-grade system.

Hydrostatic pressure

is simply the weight of the accumulated water pushing against the structure. If the soil surrounding a building is saturated with water, intense hydrostatic pressure is applied against the foundation, thereby allowing moisture to push its way through cracks and pores in the concrete walls and up through the floor slab. A metre (4 ft) of water can exert 136 kg (300 lb) of pressure per square foot of wall.

Instead of sealing a foundation against this pressure, it is much more effective whatsapp number database and cost efficient to relieve, control, and manage it. The solution to hydrostatic pressure is to remove the water. Drainage systems—combination of grading, granular fill, control of roof bulk water, and a sump—redirect the accumulation of ground and surface water away from the foundation by channeling it to the intended location, but they are generally not enough protection. The installation of a footing drain (also known as perimeter drains) alongside a waterproofing membrane offers the highest degree of protection.