Dry floodproofing is the process of making a building or portions of it completely impermeable to water up to a specific flood elevation, ensuring no water enters the structure. The principal technical challenge in effectively implementing dry floodproofing for a building in a flood-prone area is maintaining a continuous, durable, and fully effective watertight seal across all building components and openings below the design flood elevation against significant hydrostatic pressure. Hydrostatic pressure is the force exerted by standing water due to its weight, which increases with water depth. For example, just one foot of floodwater exerts over 62 pounds of pressur....
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