What is A Flood Vent?

Updated: Jun 25, 2019

Engineered flood vents protect residential houses and commercial buildings in floodplains by preventing hydrostatic pressure buildup that can destroy walls and foundations.

An Engineered Flood Vent:

• Relieves (rather than resists) hydrostatic pressure on foundation walls during a flood event. The flood vent must allow for the automatic entry and exit of flood waters without human intervention.

• Passively equalizes hydrostatic loads on enclosure walls below the BFE.

• Must allow bi-directional relief of the flood waters regardless of the direction of flow.

• Is a "wet floodproofing" technique.

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