§ 62-2891. Lot drainage.

(a)

General. Subdivision lot design shall ensure that the drainage of surface water from lots is diverted to a storm sewer conveyance or other drainage improvement designed to receive surface water so as not to create a hazard. Lot grading and elevation of building pads shall also be designed to drain surface water away from buildings.

(b)

Building floor elevations. Establishment of building floor elevations shall be based on the minimum performance standards contained in this section, section 22-48, and article XI, Flood Protection. In the event of conflict, the most stringent standard that provides the highest floor elevation shall govern the design.

(c)

Lot grading design. Lot grading must be designed and constructed to provide drainage of surface water from all lots and prevent ponding or accumulation of surface water. The minimum allowable slope for the centerline of swales conveying surface water is one percent.

(d)

Lot grading drainage plans. subdivision construction plans must include lot grading and drainage information and details to include but not limited to:

(1)

Identify standard FHA/VA/HUD drainage type for each lot as type A (rear to front), type B (split drainage), type C (front to rear), or modified/combinations of the drainage types.

(2)

Proposed lowest floor elevation for buildings enclosed by a solid roof and walls, including garages, on each lot.

(3)

Proposed elevation at lot corners and at other locations to adequately show the slope gradient and drainage of the lots.

(4)

Identify the surface water discharge location(s) receiving the drainage from each lot.

(5)

Location and cross section of any proposed swales on the lots.

(6)

Identify that lot grading and elevation of building pads is designed to drain surface water away from buildings and provide the minimum slope requirements for building foundation drainage as required by the Florida Building Code.

(7)

Arrows indicating direction of surface water flow.

(8)

Identify any drainage structures, yard drains, or other similar drainage structures or features intended to receive or convey surface water on the lots.

(Ord. No. 95-30, § 1, 7-11-95; Ord. No. 2015-06, § 1, 3-31-15)