Article III, Sec. 90-316 to 90-323
Dimensional standards
Servicing
- Applies near
- FEMA FIRM
- Geographic extent
- Special flood hazard areas (SFHA) as shown on the FIRM dated July 7, 2009, including zones AE, A, and X.
Uses
Extracted standards
8 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- Flood opening requirements for enclosed areas below lowest floor
Provide a minimum of two openings on different sides of each enclosed area subject to flooding. The total net area of all openings must be at least one square inch for each square foot of enclosed area subject to flooding. The bottom of all required openings shall be no higher than one foot above the adjacent grade.
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure floor area200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Accessory structures in the SFHA shall be limited to no more than 200 square feet in total floor area.
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure area for varianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship.200 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
No variance shall be granted for an accessory structure exceeding 200 square feet.
- Minimum lowest floor elevation above base flood elevation24 inches
New construction or substantial improvement of any residential structure (including manufactured homes) in zones AE and A, shall have the lowest floor, including basement, elevated to or above the base flood level plus 24 inches.
- Minimum lowest floor elevation above base flood elevation for nonresidential24 inches
New construction or substantial improvement of any commercial, industrial, or nonresidential building shall have the lowest floor, including basement, elevated to or above the base flood level plus 24 inches.
- Subdivision proposal requiring detailed study5 acresacre43,560 square feet — about the size of an American football field without the end zones.
Any subdivision proposal or other proposed development (including proposals for manufactured home parks and subdivisions) that exceed 50 lots or five acres, whichever is less, in an area where BFE data is not available, or the SFHA has not been delineated, shall include data using detailed methodologies.
- Substantial improvement threshold for existing structures50 pct
The change, when added to all the changes made during a rolling five-year period does not constitute 50 percent of the structure's value.
- Utilities design to minimize flood damage
All new or replacement sanitary sewer facilities and water facilities shall be designed to minimize or eliminate infiltration of flood waters into the systems and be located and constructed to minimize or eliminate flood damages.
From the ordinance
The flood hazard overlay district is established as an overlay to existing zoning districts, with permitted uses and development standards as set forth in this article.