flow thru vent calculations for flood areas for buildings

huangyhg

flow thru vent calculations for flood areas for buildings
ha do any one know how to calculate flow thru vent calculations for flood areas for buildings?

i believe fema requires 1 square inch of vent area per 1 square foot of enclosed floor area.
so if you had a house with 2400 sf you would need 2400 sq. inches of vent space or 16.667 sq. feet.
this would require about 4 - 2' x 2' vents.