Sec. 74-902, 74-911, 74-912, 74-913, 74-917, 74-918
Dimensional standards
Servicing
- Geographic extent
- All unincorporated lands within Cumberland County identified as being in the 100-year floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions.
Extracted standards
28 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- AccessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure use restrictions
Not be used for human habitation; be useable only for parking of vehicles or limited storage.
- Anchoring to prevent flotation
New construction and substantial improvements shall be built according to this article and the Virginia USBC, and anchored to prevent flotation, collapse, or lateral movement of the structure.
- Electrical and mechanical equipment elevated
Electrical, heating, ventilation, plumbing, air conditioning equipment, and other service facilities, including duct work, shall be designed and/or located so as to prevent water from entering or accumulating within the components during conditions of flooding.
- Existing structures must be brought into conformity
Any structure or use of a structure or premises must be brought into conformity with these provisions when it is changed, repaired, or improved unless one of the following exceptions is established...
- Maximum heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first. of flood opening bottom above grade1 ft
The bottom of all required openings shall be no higher than one (1) foot above the adjacent grade.
- Minimum number of flood openings2 count
Provide a minimum of two (2) openings on different sides of each enclosed area subject to flooding.
- Minimum net area of flood openings1 sqin per sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
The total net area of all openings must be at least one (1) square inch for each square foot of enclosed area subject to flooding.
- Flood damage-resistant materials
New construction and substantial improvements shall be constructed with materials and utility equipment resistant to flood damage.
- Floodproofing elevation for nonresidential buildings2 ft
Nonresidential buildings located in all A1-30, AE, and AH zones may be floodproofed in lieu of being elevated provided that all areas of the building components below the elevation corresponding to the BFE plus two (2) feet are watertight...
- Maintain flood carrying capacity
The flood carrying capacity within an altered or relocated portion of any watercourse shall be maintained.
- Manufactured homesManufactured homeA dwelling built in a factory to a federal standard and transported to the site. must meet new construction requirements
In zones A, AE, AH, and AO, all manufactured homes placed, or substantially improved, on individual lots or parcels, must meet all the requirements for new construction.
- Maximum accessoryAccessory useA secondary activity customarily incidental to the main use of the lot — a garage, a home office. structure floor area600 sqftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
Be limited to no more than six hundred (600) feet in total floor area.
- Lowest floor elevation for residential structures18 in
New construction or substantial improvement of any residential structure (including manufactured homes) in zones A1-30, AE, AH, and A with detailed base flood elevations shall have the lowest floor, including basement, elevated to or above the base flood level plus eighteen (18) inches.
- Lowest floor elevation for nonresidential structures18 in
New construction or substantial improvement of any commercial, industrial, or nonresidential building (or manufactured home) shall have the lowest floor, including basement, elevated to or above the base flood level plus eighteen (18) inches.
- Construction methods to minimize flood damage
New construction or substantial improvements shall be constructed by methods and practices that minimize flood damage.
- Permit required for all development in floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions.
All uses, activities, and development occurring within any floodplain district, including placement of manufactured homes, shall be undertaken only upon the issuance of a permit.
- Recreational vehicle stay limit180 days
All recreational vehicles placed on sites must either be on the site for fewer than one hundred eighty (180) consecutive days, be fully licensed and ready for highway use... or meet all the requirements for manufactured homes.
- Sanitary sewage systems minimize infiltration
New and replacement sanitary sewage systems shall be designed to minimize or eliminate infiltration of flood waters into the systems and discharges from the systems into flood waters.
- Space below lowest floor use restrictions
Fully enclosed areas below the regulatory flood protection elevation shall not be designed or used for human habitation, but shall be used solely for parking of vehicles, building access, or limited storage of maintenance equipment.
- Subdivision BFE data required for large proposals50 lots
Base flood elevation data shall be obtained from other sources or developed using detailed methodologies... for subdivision proposals and other proposed development proposals (including manufactured home parks and subdivisions) that exceed fifty (50) lots or five (5) acres, whichever is the lesser.
- Subdivision adequate drainage
All subdivision proposals shall have adequate drainage provided to reduce exposure to flood hazards.
- Subdivision proposals minimize flood damage
All subdivision proposals shall be consistent with the need to minimize flood damage.
- Subdivision utilities located to minimize flood damage
All subdivision proposals shall have public utilities and facilities such as sewer, gas, electrical and water systems located and constructed to minimize flood damage.
- 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.
While the granting of variances generally is limited to a lot size less than one-half (½) acre, deviations from that limitation may occur.
- On-site waste disposal systems located to avoid impairment
On-site waste disposal systems shall be located and constructed to avoid impairment to them or contamination from them during flooding.
- Water supply systems minimize infiltration
New and replacement water supply systems shall be designed to minimize or eliminate infiltration of flood waters into the system.
- Permit for watercourse alteration
Prior to any proposed alteration or relocation of any channels or of any watercourse, stream, etc., within this jurisdiction a permit shall be obtained from the U.S. Corps of Engineers, the Virginia Department of Environmental Quality, and the Virginia Marine Resources Commission.
Overlay
- FloodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions. districts are overlays to underlying districts
The floodplain districts described above shall be overlays to the existing underlying districts as shown on the official zoning ordinance map, and as such, the provisions for the floodplain districts shall serve as a supplement to the underlying district provisions.
From the ordinance
This article shall apply to all unincorporated lands within the jurisdiction of Cumberland County, Virginia and identified as being in the one hundred-year floodplain... All uses, activities, and development occurring within any floodplain district... shall be undertaken only upon the issuance of a permit.