Section 151.09.004 General Parking Lot Design Requirements
A.   Surfacing and Drainage. Required on-site parking spaces and drive aisles shall be paved with 2 inches of asphaltic concrete over 4 inches of aggregate base course or 4 inches of Portland Cement Concrete reinforced with #8, 6-inch by 6-inch wire mesh over a sub- base compacted to 95 percent density and properly drained with a minimum grade of 0.5 percent and a maximum grade of 6 percent. Non-required parking spaces may be constructed using pervious or semi-pervious surfaces that do not cause erosion, barriers to pedestrian access, or adverse effects to abutting parcels. Required landscape areas shall be designed to accept stormwater runoff prior to draining to a stormwater conveyance feature when practicable. Every parking lot shall be subject to approval by the Site Plan process of Article 151.18.
B.   Access. Per Article 151.17.
C.   Indirect Source Pollution. All parking areas, designed to contain 250 or more parking spaces, or have two or more levels, shall be required to install oil and grease separators.
D.   Striping and Signage. All parking areas shall be striped and signed according to the standards adopted by the City.
E.   Handicapped Parking. All parking areas and spaces shall conform to the standards specified in the Americans with Disabilities Act Accessibility Guidelines and amendments. The handicapped parking space shall be appropriately striped, and a parking space sign meeting the City's standards shall be permanently placed in front of the space. In accordance with adopted standards, all handicapped spaces shall be located as close to the entrance as possible.
F.   Cycle Parking. In all new multi-dwelling and commercial developments, there shall be sufficient areas established to provide for parking of motorcycles and mopeds. Such areas shall be clearly defined and reserved for the exclusive use by motorcycles and mopeds.
G.   Pedestrian Access. Every parking lot shall provide a clearly identified pedestrian walkway, consisting of striping, or alternative pavement type and color, extending from the building being served to the public sidewalk or public multi-use path. Whenever possible, such access shall be protected from vehicular access.
H.   Driveways and Accessory Drives
   1.   In no case shall two-way driveways be less than 24-feet wide or one-way driveways less than 20-feet wide.
   2.   Accessory drives to service windows shall be a minimum of 12-feet wide. If accessory drives provide access to any adjacent parking spaces, the dimensions of paragraph 1 alone shall apply.
I.   Egress to Streets. Except for single-or two-dwelling structures, lots with more than three parking spaces shall be provided with adequate aisles or turnaround areas so that all vehicles may enter the street in a forward manner.
J.   Minimum Clearance. Driveways, aisles, turnaround areas, and ramps shall have a minimum vertical clearance of 12 feet for their entire length and width, but such clearance may be reduced in parking structures.
K.   Drainage. Adequate drainage shall be provided to manage the run-off generated by the impervious surface area of the parking lot in accordance with the provisions of Section 151.08.008.
L.   Clear Vision Area. See Section 151.04.009 for driveway clear vision area requirements.
M.   Connect Parking Areas. Parking areas should be designed to connect with parking areas on adjacent sites to eliminate the necessity of using the street for cross movements when possible.
N.   Clusters of Parking Spaces. Parking clusters shall not exceed 100 spaces.
O.   Setback From a Street. Where a parking lot is located across a street from a residential district, a 3-foot-high opaque obstruction to the lights from the parked automobiles must be provided between the parking lot and the street line. This shield may be in the form of a masonry wall, earth berm, or depressed grade, or any other method approved by the City. Regardless of the zoning district in which the parking lot is located, every part of a parking lot shall be set back a sufficient distance from every lot line to insure that no part of any parked vehicle will project over any lot line or obstruct any public or private sidewalk.
P.   Lighting. Parking lots used during hours of darkness shall be lighted. Pole-mounted lighting less than 13 1/2 feet in height shall be protected against vehicular and pedestrian traffic. See Article 151.11.
Q.   Landscaping, Screening and Buffering. In accordance with the requirements of Article 151.15.
R.   Off-Street Parking Lot Design. All off-street parking lots shall be designed in accordance with City Standards for stalls and aisles as set forth in the drawings, notes, and table found on the following page.
Standard Parking Area Dimensions
 
A
B
C
D
E
F
45°
8.5’
9.0'
9.5'
10.0'
17.5'
17.5'
17.5'
17.5'
13.0'
12.0'
12.0'
12.0'
12.0'
12.7'
13.4'
14.1'
2.0'
2.0'
2.0'
2.0'
60°
8.5’
9.0'
9.5'
10.0'
19.0’
19.0’
19.0’
19.0’
18.0'
16.0'
15.0'
14.0'
9.8'
10.4'
11.0'
11.6'
2.5'
2.5'
2.5'
2.5'
75°
8.5’
9.0'
9.5'
10.0'
19.5'
19.5'
19.5'
19.5'
25.5'
23.0'
22.0'
21.0'
8.8'
9.3'
9.8'
10.3'
2.5'
2.5'
2.5'
2.5'
90°
8.5’
9.0'
9.5'
10.0'
18.5'
18.5'
18.5'
18.5'
28.0'
26.0'
25.0'
24.0'
8.5'
9.0'
9.5'
10.0'
3.0'
3.0'
3.0'
3.0'
A)   Parking Angle
B)   Stall Width
C)   Stall Depth (with and without bumper overhang)
D)   Aisle Width between Stall Lines (5)
E)   Stall Width Parallel to Aisle
F)   Bumper Overhang
NOTES:
   1.   For one row of stalls, use "C" plus "D" as minimum width.
   2.   Public alley width may be included as part of dimension "D," but all stalls must be on private property, off the public right-of-way.
   3.   For estimating the available parking area, use 350 square feet per vehicle for stall, aisle, and access area.
   4.   The stall width for self-parking of long duration is 8.5 feet; for higher turnover self- parking is 9.0 feet; and for supermarkets and similar facilities (shoppers with packages) is 9.5-10.0 feet.
   5.   The minimum aisle width for two-way traffic and for emergency vehicle operations is 24 feet. The minimum aisle width for one-way traffic and for emergency vehicle access is 20 feet. Only certain aisles may be needed for emergency vehicle access.
   6.   If a vehicle overhangs a private sidewalk, a minimum accessible area of 3 feet must be maintained for pedestrian access.
S.   All required off-street parking shall be located as follows:
   1.   On the same or contiguous lot(s) or parcel(s) of land of the use the parking is intended to serve.
   2.   On land in the same ownership as the use the parking is intended to serve.
   3.   On land which has the same zoning classification or a zoning classification which allows Permitted or Conditional uses, as the use the parking is intended to serve.
T.   Alternative locations may be approved as part of the site plan review process provided the parking provided at the alternative location is within 600 feet of the use to be served, as measured along the most direct pedestrian route from property line to property line. The pedestrian connection shall require no crossing of a collector or arterial street and shall be lighted. Further, a parking agreement, in a form approved by the City Attorney shall be recorded with the Cochise County Recorder's Office, at the owner's expense, providing that the off-premise parking area will not be disposed of except in conjunction with the sale or use of the building the parking area serves so long as the parking is required.
('76 Code, Art. 12-1) (Ord. 743, passed 4-10-86; Am. Ord. 764, passed 1-8-87; Am. Ord. 804, passed 3-24-88; Am. Ord. 896, passed 1-23-92; Am. Ord. 934, passed 10-28-93; Am. Ord. 982, passed 5-25-95; Am. Ord. 2003-008, passed 4-24-03; Am. Ord. 2003-021, passed 11-25-03; Am. Ord. 2012-004, passed 6-28-12)