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Wilton Manors City Zoning Code

ARTICLE 160

SUBDIVISION DESIGN STANDARDS

Sec. 160-010.- Generally.

In considering plans for subdivision of land, the PZB and City Commission shall be guided by the standards set forth hereinafter. The said standards shall be considered to be minimum requirements.

(A)

Character of land. Land to be subdivided shall be of such character after development that it can be used safely for building purposes without danger to health or peril from fire, flood or other menace.

(B)

Consistency. Subdivisions shall conform to the existing and planned street networks and policies as adopted by the City Commission, including the Transportation Element of the Comprehensive Plan, and as adopted by Broward County, including the Trafficways Plan.

(C)

Specifications for required improvements. All required improvements shall be constructed and installed to conform to the City's specifications, as set forth in the minimum engineering standards adopted by the City Commission. Improvements not addressed in the City's adopted specifications must conform to A Policy on Geometric Design of Highways and Streets, published by the American Association of State Highway and Transportation Officials or a Manual of Uniform Traffic Control Devices, published by the US Department of Transportation, Federal Highway Administration, as determined by the City Engineer, and must be in full compliance with current Americans with Disability Act standards.

(Ord. No. 848, 10-14-03)

Sec. 160-020. - Street layout.

(A)

Width, location and construction. Streets shall be of sufficient width, suitably located, and adequately constructed to conform to the minimum requirements of this Article and the Transportation Element of the Comprehensive Plan, and to accommodate the prospective traffic and afford access for fire fighting and road maintenance equipment. The arrangement of streets shall be such as to cause no undue hardship to adjoining property or to the developer's property, and shall be coordinated so as to compose a convenient system.

(B)

Arrangement. The arrangement of streets in the subdivision shall provide for the continuation of arterial and collector streets, in order to provide for adequate fire protection, movement of traffic and the construction or extension, presently or when later required, of needed utilities and public services such as sewers, water and drainage facilities. Access points to peripheral streets shall be adequate to serve the proposed development, and be compatible and functional with circulation systems outside the development.

(C)

Local streets. Local streets shall be so laid out that their use by through traffic will be discouraged.

(D)

Special treatment along arterial and collector streets. When a subdivision abuts or contains an existing or proposed arterial or collector street, the City Commission may require marginal access streets, reverse frontage with a landscape buffer contained in a non-access reservation along the real property line, deep lots with rear alleys or such other treatment as may be necessary for adequate protection of residential properties and to afford separation of through and local traffic.

(E)

Provision for future resubdivision. Where a tract is subdivided into lots substantially larger than the minimum size required in the zoning district in which a subdivision is located, the City Commission may require that streets and lots be laid out so as to permit future resubdivision in accordance with the requirements contained in these regulations.

(F)

Loop, cul-de-sac and dead-end local residential streets. The creation of cul-de-sac, deadend or loop local residential streets will be permitted wherever the City Commission finds that such type of roadway layout will not interfere with good traffic circulation in the area. Cul-de-sac and dead-end streets must provide a turning area at the closed end. The turning area must conform with recommended practices for local streets as described in A Policy on Geometric Design of Highways and Streets, published by the American Association of State Highway and Transportation Officials. In the case of cul-de-sac and dead-end streets, where needed or desirable, the City Commission may require the reservation of a twenty (20) foot wide right-of-way to provide for continuation of pedestrian traffic and utilities to the next street. Subdivisions containing twenty (20) lots or more shall have at least two (2) street connections with existing public streets, or streets on an approved subdivision plat for which a bond has been filed, unless specifically waived by the City Commission.

(G)

Block size. Blocks generally shall no be less than four hundred (400) feet in depth nor more than thirteen hundred twenty (1,320) feet in length. In general, no block width shall be less than twice the normal lot depth.

(H)

Intersections with collector or arterial streets. Local street openings into such roads shall, in general, be at least five hundred (500) feet apart. No cross intersections will be permitted except where this restriction would impose undue hardship on the developer.

(I)

Street jogs. Street jogs with centerline offsets of less than one hundred twenty-five (125) feet shall be avoided.

(J)

Angle of intersection. In general, all streets shall join each other so that for a distance of at least one hundred (100) feet the street is approximately at right angles to the street that joins it.

(K)

Other required streets. Where subdivision borders on or contains a limited access highway or right-of-way, the City may require a street approximately parallel to and on each side of such right-of-way, at a distance suitable for the appropriate use of the intervening land (as for park purposes in residential districts, or for commercial or industrial purposes in appropriate districts). Such distances shall also be determined with due regard for the requirements of approach grades and future grade separations.

(Ord. No. 848, 10-14-03; Ord. No. 876, § 3, 8-23-05)

Sec. 160-030. - Street design.

(A)

Street widths. Streets shall have the following minimum widths.

Street Type Minimum Right-of-Way Min. R-O-W Radius at Cross Street Minimum Pavement Width
Alley 30' 20' 20'
Local 50' 25' 22'
City collector 80' 30' 24'
Circular Turnaround on Local Streets 70' n/a *
Radius on R/W @ Intersection Corners 35'

 

Arterial and county collector roadways shall provide minimum right-of-way dedications consistent with the Broward County Trafficways Plan, and shall be constructed consistent with Broward County design standards.

*See Subsection (H) and Section 160-020(F) relating to dead-end streets and culs-de-sac.

(B)

Dedications. Additional right-of-way shall be dedicated upon the earlier of either plat approval or issuance of building permit to complete the minimum required right-of-way section width abutting a property pursuant to Subsection (A) and the Broward County Trafficways Plan.

(C)

Improvements. Streets shall be graded and improved with pavement, six (6) foot sidewalks or eight (8) foot multi-purpose paths—As determined by the City Commission, in addition to gutters, storm drainage facilities, street signs, sod, and street trees as required by Article 150, Landscaping.

(D)

All necessary water and sewer systems including lines, laterals, lift stations, force mains, water mains, fire hydrants and appurtenances shall be designed by an engineer registered in the State of Florida. The design shall conform to good engineering practice and meet all requirements of local, state and federal agencies having jurisdiction. The City Engineer shall inspect the work. The developer shall pay one hundred (100) percent of the cost of such construction including engineering, inspection, administrative, and legal services.

(E)

If it is necessary that any of the above listed utilities be extended from existing facilities having capability to provide the needs of the proposed development or if new facilities must be provided off-site, the actual cost of engineering and construction to provide such extended or additional services shall be paid by the Developer. The need for such extended or additional services shall be as determined by the City Engineer based on compatibility with the sanitary sewer and potable water elements of the City's Comprehensive Plan and/or as required by Section 10D-6 of the Florida Administrative Code, as may be amended from time to time. At such time as the available excess capacity constructed by the Developer is utilized by other Developers in the area, the City will reimburse to the Developer that portion of the charges that are appropriately chargeable, based upon excess capacity used. The obligation of the City to reimburse that portion shall only exist for five (5) years from the date the City awards that contract and thereafter said obligation will cease. A longer period of time will be allowed upon good cause shown to the Commission.

(F)

Utility easements. A twelve (12) foot utility easement shall be required outside, and abutting both sides of street right-of-way, unless waived by the City Engineer. Where it is impractical or undesirable to locate utilities within or adjacent to the street right-of-way, a minimum twenty (20) foot perpetual unobstructed easement centered on rear and/or side lot lines shall be otherwise required for this purpose. Wherever possible, easements shall be continuous from block to block and shall present as few irregularities as possible. Such easements shall be cleared and graded where required.

(G)

Grades. Grades of all streets shall conform in general to the terrain, and shall not be less than one-tenth ( 1/10 ) of one percent for major, collector or local streets.

(H)

Dead-end streets (culs-de-sac). Where dead-end streets are designed to be so permanently, they should, in general, not exceed six hundred (600) feet in length, and shall terminate in a circular turn-around having a minimum right-of-way radius as specified in Subsection 160-030(A), Street design; street widths.

(I)

Watercourses. Where a watercourse separates a proposed street from abutting property, provision shall be made for access to all lots by means of culverts or other structures of design approved by the City Engineer. There shall be provided a drainage easement of not less than ten (10) feet in width for all watercourses.

Where a subdivision is traversed by a drainage way, channel or stream, there shall be provided a storm water easement or drainage right-of-way as required by the City Engineer, and in no case less than fifty (50) feet in width.

(J)

Curve radii. In general, street lines within a block, deflecting from each other at any one point by more than ten (10) degrees, shall be connected with a curve, the radius of which for the centerline of street shall not be less than four hundred (400) feet on major streets, two hundred (200) feet on collector streets and one-hundred (100) feet on minor streets.

(K)

Service streets or loading space in commercial development. Paved private service streets of not less than twenty (20) feet pavement width, or in lieu thereof, adequate off-street loading space, suitably surfaced, shall be provided in connection with lots designed for commercial use.

(L)

Free flow of vehicular traffic abutting commercial developments. In front of areas zoned and designed for commercial use, or where a change of zoning to a district which permits commercial use is contemplated, the street width shall be increased by such amount on each side as may be deemed necessary by the City Commission to assure the free flow of through traffic without interference by parked or parking vehicles, and to provide adequate and safe parking space for such commercial or business district.

(M)

The Platting of half streets along the edge of a subdivision, and platting of a narrow reserve strip (spite strip) along the edge of a subdivision shall not be permitted.

(N)

Private local streets may be permitted by the City Commission when the design and construction of such streets meets or exceeds the minimum standards and specifications as outlined or referred to herein; and when a method suitable to the City Commission is established for the perpetual maintenance of said private streets. Private streets shall provide access rights for government and emergency vehicles.

(O)

Installation of streetlights shall be required in accordance with design and specification standards approved by the City Engineer.

(Ord. No. 848, 10-14-03)

Sec. 160-040. - Street names.

(A)

Type of name. All street names shown on a preliminary plat or subdivision plat shall be approved by the City Commission. Street names shall be required to be in numerical order.

(B)

Names to be substantially different. Proposed street names shall be substantially different so as not to be confused in sound or spelling with present names except that streets that join or are in alignment with streets of an abutting or neighboring property shall bear the same name. Generally, no street should change direction by more than forty-five (45) degrees without a change in street name.

(Ord. No. 848, 10-14-03)

Sec. 160-050. - Lots.

(A)

Lots to be buildable. The lot arrangement shall be such that a principal building of reasonable and customary size for the given zoning district can be constructed in compliance with the ULDR. Lots should not be of such depth as to encourage the later creation of a second building lot at the front or rear where minimum access requirements are not provided for future building lots.

(B)

Side lines. All side lines of lots shall be at right angles to straight street lines and radial to curved street lines, unless the City determines that an alternative method will give a better street or lot plan and each lot will be buildable pursuant to Subsection (A), above.

(C)

Corner lots. In general, corner lots should be larger than interior lots to provide for proper building setback from each street and provide a desirable building site.

(D)

Driveway access. Driveway access and grades shall conform to the City Specifications, or as an alternative, A Policy on Geometric Design of Highways and Streets, published by the American Association of State Highway and Transportation Officials.

(E)

Monuments and lot corner markers. Permanent monuments meeting the requirements of City specifications shall be set at such block corners, angle points, points of curves in streets and other points as the City Engineer may require and their location shall be shown on the subdivision plat.

Sec. 160-060. - Drainage improvements.

(A)

Minimum elevation (centerline of street). Shall be pursuant to the drainage level of service standards established in Article 90, Concurrency and Impact Fees.

(B)

Removal of surface water. The subdivider shall provide such facilities as may be needed, including gutters, to drain the subdivision to positive outlets that can be legally maintained in permanent use, or into a public drainage system of adequate capacity which discharges into such positive outlets, including all rights-of-way, easements and necessary construction at no expense to the City. Side ditches along public roads shall not necessarily be considered as such public drainage systems or positive outlets. A complete storm drainage system shall be provided for draining the entire subdivision. The system shall also have capacity for handling runoff coming across or into the subdivision from the outside.

(C)

Storm drainage system design. The drainage shall be designed using accepted engineering principles and in accordance with the following design criteria:

(1)

Rational formula (Q = ciA).

(2)

Coefficient of runoff (c) shall be 0.8 for paved and roof areas and 0.2 for grassed areas.

(3)

A three (3) year design storm shall be used.

(4)

Manning "n" shall be 0.13 for concrete pipe or fully paved corrugated metal pipe and 0.024 for corrugated metal pipe.

(5)

The minimum gutter gradient shall be 0.20 percent.

(D)

Responsibility for adjacent development. The system shall be designed for the runoff that will occur after development of the subdivision and surrounding area is complete. The system shall be designed so as not to interfere with the operation of existing systems or conflict with the flow of water to or from adjacent property.

(E)

Drainage structures. Headwalls for culverts shall be provided at the locations required by the City Engineer. The City Engineer shall approve plans and specifications for headwalls. Gutters, inlets, headwalls, manholes, and other drainage structures shall be of a design approved by the City Engineer. Generally, standard Florida Department of Transportation structures will be satisfactory; however, the City Engineer may permit the use of other designs or require the use of other designs.

(F)

Storm drainage materials and construction. All storm drainage materials and construction shall be in accordance with the FDOT Standard Specifications for Road and Bridge Construction - Current Edition.

(G)

Adequacy of local parks and recreation facilities. In order to provide lands or funds to provide additional local parks necessary to meet the need for such City level parks created by additional residential development, a developer must provide for such needs through land dedication or payment of a park impact fee, in accordance with Article 90, Concurrency and Impact Fees.