Section 6-307, 6-308, 6-310
Dimensional standards
Servicing
- Geographic extent
- Within the boundaries of any A, AE, or AH zone in any floodplainFloodplainLand expected to flood at a stated frequency, where building carries extra conditions. districtZoning districtA mapped area with one set of rules, identified by a code like R-1 or B-2. as shown on the flood insurance rate map.
Uses
Extracted standards
11 individual requirements pulled out of this section’s prose, each with the sentence it came from.
Other
- Breakaway wall design load20 psf
Breakaway wall shall have a design safe loading resistance of not less than 10 and no more than 20 pounds per square foot.
- Dry floodproofing for non-residential
Non-residential buildings may be dry-floodproofed in lieu of being elevated provided that all areas below BFE+1ft are watertight.
- Engineer certification
No building permit shall be issued unless the applicant submits a certification from a registered architect or engineer that the construction meets flood damage protection requirements.
- Lowest floor elevation1 ft above BFE
lowest floor, including basement, elevated to or above the base flood elevation plus 1-foot.
- Maximum increase in base flood elevation0.5 ft
No filling of any kind shall be allowed within the boundaries of any A or AE zone except where such filling will not increase the base flood elevation more than 0.5 foot.
- Minimum number of openings2 openings
Provide a minimum of two openings on different sides of each enclosed area.
- Opening bottom heightMaximum heightThe tallest a building may be, given in feet, in storeys, or both — whichever binds first.1 ft above grade
The bottom of all required openings shall be no higher than one foot above the adjacent grade.
- Openings for floodwater equalization1 sq inch per sq ftsq ftSquare feet. An acre is 43,560 sq ft; a typical suburban lot is 7,000–10,000.
total net area of all openings must be at least one square inch for each square foot of enclosed area.
- Recreational vehicle stay limit180 days
All recreational vehicles in the floodplain must be on the site for fewer than 180 consecutive days.
- Use of space below lowest floor
Fully enclosed areas below BFE+1ft shall be used solely for parking, building access, or limited storage.
- Subdivision flood damage minimization
All subdivision proposals shall be consistent with the need to minimize flood damage; have public utilities located to minimize flood damage; have adequate drainage; and include base flood elevation data.
From the ordinance
New construction or substantial improvement of any residential building shall have the lowest floor elevated to or above the base flood elevation plus 1-foot. Trailer camps, manufactured homes, and mobile homes are not permitted in any floodplain district.