Sec. 90-724
Dimensional standards
Servicing
- Geographic extent
- All floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions. districts as shown on the Official Zoning Ordinance Map
Extracted standards
14 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- Anchoring
New construction and substantial improvements shall be anchored to prevent flotation, collapse or lateral movement.
- Existing structure conformity
Structures must be brought into conformity when changed, repaired, or improved unless exceptions apply.
- Flood carrying capacity
The flood carrying capacity within an altered or relocated portion of any watercourse shall be maintained.
- Flood damage-resistant materials
New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.
- Zoning permit required
All uses, activities, and development within any floodplain district require a zoning permit.
- Sanitary sewage infiltration
New and replacement sanitary sewage systems shall minimize infiltration and discharge of flood waters.
- Subdivision flood damage minimization
Subdivision proposals shall be consistent with minimizing flood damage and have adequate drainage.
- Utility protection
Electrical, heating, ventilation, plumbing, air conditioning equipment and other service facilities shall be designed to prevent water entry during flooding.
- No varianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. for accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. >600 sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.600 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 600 square feet.
- VarianceVariancePermission to depart from a specific dimensional rule, granted on a showing of hardship. lot size limit0.5 acreacre43,560 square feet — about the size of an American football field without the end zones.
Variances generally limited to lot size less than one-half acre.
- On-site waste disposal
On-site waste disposal systems shall be located to avoid impairment or contamination during flooding.
- Water supply infiltration
New and replacement water supply systems shall minimize infiltration of flood waters.
- Watercourse alteration permit
Prior to alteration or relocation of watercourses, permits from Army Corps, DEQ, and VMRC required.
Overlay
Floodplain districts are overlays to underlying districts; more restrictive provisions apply.
From the ordinance
The floodplain districts described above shall be overlays to the existing underlying districts... more restrictive provisions shall apply.