Sec. 55-740. - Off-street parking design standards.
(a) Standards. This section establishes minimum standards for the design, construction and maintenance of off-street parking areas.
(b) Dimensions.
(1) Standard parking stalls must comply with minimum dimensions specified in Table 55-740(1) and Figure 55-740 (following this section). The standard size parking stall shall be at least nine feet wide and 18 feet long.
TABLE 55-740(1). STANDARD PARKING
LAYOUT DIMENSIONS
Parking Pattern or Angle | Curb Length per Car (B) (feet) | Parking Space Depth (A) (feet) | Drive Aisle Width (C) (feet)
0° | 21 | 8 | 12
45° | 12.7 | 19 | 13
60° | 10.4 | 20 | 16
75° | 9.3 | 19.7 | 22
90° | 9.0 | 18 | 24
(2) Compact parking stalls as required by section 55-737 shall be eight feet in width and 16 feet in depth. These stalls shall comply with minimum dimensions specified in Table 55-740(2) and Figure 55-740.
TABLE 55-740(2). COMPACT PARKING LAYOUT DIMENSIONS
Parking Pattern or Angle | Curb Length per Car (B) (feet) | Parking Space Depth (A) (feet) | Drive Aisle Width (C) (feet)
0° | 19 | 8 | 11
45° | 11.3 | 17 | 11
60° | 9.2 | 17.9 | 14
75° | 8.3 | 17.5 | 17.5
90° | 8 | 16 | 20
(c) Vehicle overhang. Where parking stalls lie adjacent to landscaped areas, the paved depth of the stalls may be decreased by two feet to provide for a vehicular overhang area. The vehicular overhang area may not encroach into a required landscaped area or public sidewalk.
(d) Design requirements for parking reserved for the handicapped.
(1) Accessible parking spaces for individual vehicles shall have a minimum width of eight feet plus an adjacent access aisle.
(2) Parking access aisles shall be part of an accessible route to the building or facility entrance and adjoin each handicapped space. Two accessible parking spaces may share a common access aisle. Parked vehicle overhangs shall not reduce the clear width of an accessible route. Standard access aisles must be five feet wide. Parking spaces and access aisles shall be level with surface slopes not exceeding 1:50 (two percent) in all directions.
(3) One in every eight accessible spaces, but not less than one shall be served by an access aisle eight feet wide minimum and shall be designated "van accessible" as required below. All such spaces may be grouped on one level of a parking structure.
(4) A minimum vertical clearance of 98 inches must be provided at each parking space and along at least one vehicle access route from site entrance(s) and exit(s).
(5) Accessible parking spaces serving a particular building shall be located on the shortest accessible route of travel from adjacent parking to an accessible entrance. In parking facilities that do not serve a particular building, accessible parking shall be located on the shortest accessible route of travel to an accessible pedestrian entrance of the parking facility. In buildings with multiple accessible entrances with adjacent parking, accessible parking spaces shall be dispersed and located closest to the accessible entrances.
(6) Access routes from parking spaces to entrance or elevator must be barrier-free and not require users to walk or wheel behind parked cars. Any intervening curb on this route must include a curb cut for handicapped access that is not less than three feet wide with a gradient of not more than one foot in 12 feet.
(7) Accessible parking spaces shall be designed as reserved by a sign showing the symbol of accessibility. Van accessible spaces shall have an additional sign "van accessible" mounted below the symbol of accessibility. Such signs shall be located so they cannot be obscured by a vehicle parked in the space.
(e) Paving and drainage.
(1) Off-street parking facilities shall be surfaced and maintained with asphalt, concrete, brick or other permanent hard surfacing material sufficient to prevent mud, dust or loose material. Surfaces which are pervious, but still provide a hard surface, are acceptable.
(2) Off-street parking facilities shall provide a storm drainage system approved by the public works director. The system shall prevent the free flow of water onto adjacent properties or public rights-of-way.
a. An interior storm drainage system, connected to the city storm sewer system if reasonably available, is required for all parking facilities one acre or larger in size per drainage area. This requirement may be waived by the public works director.
b. Facilities under one acre may utilize surface drainage and may cross sidewalks at driveways or through flumes under sidewalks.
(3) A paved, hard surfaced driveway shall be installed and maintained, providing a connection between (a) any parking facility, garage, carport, or other structure capable of storing a personal vehicle, and (b) a curb cut along the adjoining street.
(f) Landscape requirements. Interior and perimeter landscaping shall be provided for all parking facilities, other than parking structures, to buffer the facility from surrounding properties and rights-of-way; reduce the environmental effects of large, hard-surfaced area; and improve the retention and absorption of storm water runoff. Parking facilities with an area of less than 4,000 square feet shall be exempt from interior landscaping provisions; parking facilities with an area of less than 2,000 square feet shall be exempt from both interior and perimeter landscaping provisions.
(1) All landscaping shall comply with the provisions set forth in article XIII, "Landscaping and Screening" (section 55-711 et seq.). For properties within Urban Design districts, reference section 55-928 for interior and perimeter parking lot landscaping requirements.
(2) Perimeter landscaping shall include the continuous landscaped area(s) which constitute the physical edge that surrounds the parking facility, and may include or be part of any side, front or rear buffer yard.
(3) Interior landscaped area shall include that landscaped area within the outmost limits of the parking facility, not including side, front or rear buffer yards; or perimeter landscaping.
(4) Each unenclosed parking facility shall provide minimum perimeter landscaping of at least five feet along each side property line, and ten feet along street property lines. Perimeter landscaping shall be increased to a ten-foot minimum width where adjacent to residential districts.
(5) Each unenclosed parking facility shall provide interior landscaping equal to no less than five percent of the total paved area of the parking facility. All landscaped areas used for tree planting pursuant to section 55-718 must be no less than eight feet in any one direction and a minimum of 150 square feet. Properties within the DS downtown service district, GI general industrial district, or HI heavy industrial district shall be exempt from this requirement.
(6) Interior landscaping shall constitute credit toward the satisfaction of overall landscaping requirements set forth in section 55-715.
(7) All landscaping shall be protected with concrete curbs or barriers with equal performance and shall be continuously maintained free of weeds, debris and litter.
(g) Screening requirements. Any parking facility which abuts property in a residential district shall provide a fence, wall or landscape screen not less than four feet in height for the length of the common boundary. A grade change, terrace or other design feature which effectively blocks the sight line of headlights into the residential property may satisfy this requirement, subject to the approval of the planning director.
(h) Entrances and exits.
(1) Adequate access to each parking facility must be provided by means of clearly defined and limited driveways in conformance with design standards established by the public works department and on file with the city clerk. Entrances and exits should be located so as to direct nonresidential traffic away from residential areas.
(2) Access to a parking facility shall be restricted as follows:
a. Access to a more intensive residential district shall not be across a less intensive residential district.
b. Access to office, commercial or industrial districts shall not be across a residential district, except where this access is provided within an approved planned unit development.
(3) Parking facilities other than driveways for single-family, duplexes, two-family or townhouse residential uses must permit vehicles to enter the street in a forward position.
(i) Lighting. Exterior lighting shall comply with the requirements of chapter 44 of this Code.
(j) Safety features.
(1) Parking facilities shall use curbs, protective bumpers, wheel stops or other devices to prevent encroachment on public rights-of-way or adjoining private property and to protect landscaping.
(2) Parking facility design shall provide visibility of and between pedestrians and vehicles when circulating within or entering or leaving the facility.
(3) Vehicular circulation patterns shall be designed in accord with accepted principles of traffic engineering and safety.
(4) Parking facility design, lighting, landscaping and other features shall provide ready visibility into the facility from adjacent public sidewalks and shall not create blind or hidden areas.
(k) Maintenance. All parking facilities shall be maintained to assure the continued usefulness and compatibility of the facility. Acceptable maintenance includes keeping the facility free of refuse, debris and litter; maintaining paving surfaces in sound condition; and providing proper care of landscaped areas.
(l) Adjustments. For uses subject to conditional or special permit approval, the planning board or the city council may adjust the minimum requirements of this section in order to provide design, use ability, attractiveness or protection to adjoining uses in a manner equal to or greater than the specific requirements of this section.
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Figure 55-740. Off-street Parking Design Standards
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Parking Stall Sizes
(Code 1980, § 55-740; Ord. No. 33109, § 1, 11-23-93; Ord. No. 36203, § 3, 3-25-03; Ord. No. 37289, § 1, 2-14-06; Ord. No. 38725, § 1, 5-11-10; Ord. No. 39640, § 1, 9-25-12; Ord. No. 39652, § 1, 4-23-13; Ord. No. 42341, § 9, 10-27-20; Ord. No. 44374, § 1, 8-26-25)