§ 50-533. Submittal and approval of construction plans.

(a)

Submittal. Prior to initiating any construction and only after receiving preliminary plat approval, the applicant shall submit three copies of the construction plans to the development department.

(b)

Timing and fee. Construction plans must be submitted for review by applicable county departments and a fee paid within 18 months following preliminary plat approval.

(c)

Preparation. Trimline sheet size for the construction plans shall be 24 inches by 36 inches. A three-quarter-inch margin shall be provided on all sides of the drawing except for the left binding side where a two-inch margin shall be provided. Multiple sheets may be used but in this event sheet number and total number of sheets must be indicated on each sheet and cross referencing between sheets must be used. Conventional methods of presentation shall be used. Details shall be shown in plan, elevation or section as required. Pictorial or isometric methods of presentation should be avoided. Abbreviations should be avoided, but if used, they should be defined in the notes. Applicable and necessary notes and symbol legends should be included. The construction plans shall make specific mention of the date of approval and assigned number of the preliminary plat of subdivision. Coloring is not permitted. The front or cover sheet shall include a location map to scale as required for the preliminary plat. Each sheet of the construction plans shall contain the subdivision name, a graphic scale, a stated scale, and a north arrow. The plan shall be drawn at the same scale as for the preliminary plat to which it refers. Roads shall be identified by number as they appear on the preliminary plat. Lots, blocks and tracts shall be numbered or otherwise properly identified.

(d)

Content. The construction plans in scope, detail and purpose shall be suitable for contracting and construction purposes. The plans shall show those subdivision improvements which are required; and which are insured by bond or improvement agreement; and which must be satisfactorily completed before the bond or escrow is released. The construction plans shall indicate location and construction details for all required subdivision improvements including, but not limited to, road construction, grading, drainage facilities, signs, grassing, and miscellaneous construction. No streetlights, private signs or similar objects shall be placed in the public rights-of-way without prior approval of the board of county commissioners. Plans shall include all necessary dimensions, elevations, details, sections and notes which are necessary and desirable in order to clearly and exactly show the work to be done and the manner in which it is to be done. Design details shall conform to applicable construction details as provided in the Florida Department of Transportation Manual of Uniform Minimum Standards for Design, Construction and Maintenance for Public Streets and Highways, and in any other applicable Florida Department of Transportation manuals, or any successor manual, as the same may be amended from time to time, and applicable requirements of this chapter. Design and scope of proposed improvements must be shown on the improvement plan.

(1)

Roads and drainage. Plan-profile presentation for road design and drainage facilities design is required showing finish grades and invert elevations.

(2)

Topography. Existing elevations must be shown by contours not to exceed two-foot intervals with consideration given to closer interval on relatively flat terrain. All floodplains shall be shown by contour with the flood elevation noted. The topographic information shown must be obtained by a registered land surveyor or, if the topographic information is obtained by aerial methods, the name of the person or firm performing the service must be indicated. Contours obtained by aerial means shall not be used for establishing finish grades, calculating cut or fill quantities, or calculating stormwater runoff quantities when there is reasonable doubt as to their accuracy due to dense ground cover or other reasons. Under such conditions, contours obtained from more reliable ground methods shall be used. The project surveyor is responsible for the reliability of topographic information shown.

(3)

Runoff and retention. Stormwater runoff from all public rights-of-way and subdivision shall be collected and disposed of within the subdivision by acceptable methods. Calculations for runoff shall consider the entire contributory watershed including areas outside of the subdivision. Ultimate use of undeveloped areas outside of the subdivision shall be assumed as being the most reasonable use of land. Adjacent public facilities may be utilized for disposal if it can be proven that capacity is sufficient. Natural disposal facilities within the subdivision may be used without further excavation if, in the opinion of the project engineer, the existing capacity is sufficient. Natural collection facilities which direct runoff from the subdivision onto adjacent properties must be perpetuated to the extent of protecting the upland owners interest, however, such facilities must not be incorporated into the drainage design for the subdivision. The collection of stormwater runoff shall be by positive gravity means without the use of siphons, pumps or similar devices. Calculations shall be as required by the appropriate water management district. The various coefficients of permeability and the areas for each shall be based on an assumption of the conditions of ultimate development of the subdivisions. Rainfall intensity must be based on the latest available intensity-duration curves for ten- and 25-year frequency storms as published by a governmental agency. The county engineer reserves the right to require the project engineer to submit storm drainage calculations for review. Format of calculations must be conventional and assumed parameters must be listed. Ditch and storm drain flow capacity shall be determined from Mannings Formula with coefficients of roughness based on an assumption of the conditions of ultimate development of the subdivision. Culvert flow capacity shall be determined for the conditions of inlet control or outlet control. Under inlet control, consideration shall be given to the cross sectional area of the culvert inlet, hydraulic efficiency of the inlet, and height of headwater. Under outlet control, additional consideration shall be given to the height of tailwater and the slope, roughness and length of the culvert. Culverts shall be designed to discharge a ten-year frequency storm without static head at the entrance and a 25-year frequency storm utilizing available head at the entrance. Entrance less coefficient (Ke) shall be taken as 0.5 for headwalls.

(4)

Percolation and soil tests. Percolation and soil test results must be shown. Soils identification must refer to the Unified Soil Classification System conforming to Military Standard MIL-STD619. Test holes shall be excavated at the location of each percolation test hole as specified in this section. Test holes shall be excavated to a six-foot depth. Test hole locations shall be shown on the improvement plan and the soil type and water table information found at each location shall be indicated in tabular form. Each print submitted shall bear the original signature and seal of the project engineer and the project surveyor, and each are responsible for information shown within their particular field of practice. Percolation test results shall be shown on the improvement plan. One such test shall be taken at the center of each proposed water retention area.

(5)

Other. The development department may require other construction plan content as necessary.

(e)

Review process. The plat review committee shall, within 30 days, review and decide to approve or disapprove the construction plans. The plat review committee will include the development department director, the county road superintendent, the county engineer, the county sanitarian and the county forester.

(f)

Construction permits. Construction permits shall be issued by the development department. In no case shall any construction be initiated until such time as both preliminary plat approval and construction plan approval have been received.

(g)

Fees. The fee schedule for construction plan review shall be adopted by resolution by the board of county commissioners, and it shall be posted and displayed in the development department office.

(h)

Expiration. The construction permit shall expire within six months if construction has not begun.

(1991 LDR ch. 71, § 5.03; Ord. No. 2007-03, § 13, 7-17-2007)