Alexandria, Virginia · General provision
Section 6-300
Special Flood Hazard AreaAll Alexandria districts0
Uses
Extracted standards
6 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Fencing & walls
- Fence approval required
No wall, fence or other outdoor obstruction shall be constructed in any floodplain district unless approved
Floodplain
- Breakaway wall design safe loading resistance10 psf
design safe loading resistance of not less than 10 and no more than 20 pounds per square foot
- Lowest floor elevation above base flood elevation1 ft
lowest floor, including basement, elevated to or above the base flood elevation plus 1-foot
- Maximum enclosed space below lowest floor300 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The enclosed space shall be less than 300 square feet.
- Maximum increase in base flood elevation0.5 ft
shall not increase the water-surface elevation of the 1-percent annual chance flood by more than 0.5 foot
Other
- Maximum lot size for varianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship.0.5 acresacre43,560 square feet — about the size of an American football field without the end zones.
limited to a lot size less than one-half acre
From the ordinance
Within the boundaries of any A or AE zones in any floodplain district... buildings or structures may be constructed or substantially improved only in accordance with the following requirements.