Dimensional standards
Servicing
- Geographic extent
- All special flood hazard areas within the jurisdiction
Extracted standards
5 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Floodplain
- Existing structure alteration
Expansion in floodway not allowed unless no increase in BFE; modifications <50% market value conform to VA USBC; >=50% full compliance.
- Flood vent openings
Minimum two openings on different sides, total net area at least 1 sq in per sq ft, bottom no higher than 1 ft above grade.
- Lowest floor elevation
Residential: lowest floor elevated to BFE + 18 inches. Nonresidential: elevated to BFE + 18 inches or floodproofed to BFE + 2 feet.
- Space below lowest floor
Enclosed areas below lowest floor shall not be used for habitation, only parking, access, storage; constructed of flood resistant materials; with openings.
- Subdivision BFE data
Base flood elevation data required for subdivisions exceeding 50 lots or 5 acres.
From the ordinance
New construction or substantial improvement of any residential structure ... shall have the lowest floor, including basement, elevated to or above the base flood level plus 18 inches.