1. Permeable pavement is encouraged but not required. Permeable pavement shall not be located on heavy industrial sites, fueling stations, sites with expansive soils or shallow depth to bedrock, areas draining to the permeable pavement greater than 5 acres, areas with the water table less than 2 feet below the bottom of the pavement base, and less than 100 feet from drinking wells. Permeable pavement includes paving units, porous asphalt pavement, or porous concrete (using single-sized aggregate and low water content); uniformly graded stone aggregate with void space; filter fabric lining the subsurface beds; and uncompacted (or hand compacted) subgrade. Permeable pavement shall consider the infiltration rate of the soil subgrade under the base. Constant supervision during construction is encouraged as sediment must be kept from the aggregate base.
2. Off-street parking shall conform to Chapter 27, Part 5 of the zoning ordinance.
3. On-Street Parking.
A. On-street parking on at least 1 side of the street is encouraged on access drives and proposed streets with speeds equal to or less than 30 mph.
B. Where provided, on-street parking shall not be located within 25 feet of a cartway intersection in order to provide safe sight distance and adequate turning radius for large vehicles.
4. Public Parking Structures.
A. Lighting and reflective materials / flat paint should be used inside the parking structure and within all pedestrian areas to increase the feeling of safety. Glossy or semi-gloss paint is discouraged.
Lighting Requirements | |||
Minimum- Maximum Horizontal2 (Footcandles) | Minimum/ Maximum Horizontal Uniformity3 | Minimum- Maximum Vertical4 (Footcandles) | |
Lighting Requirements | |||
Minimum- Maximum Horizontal2 (Footcandles) | Minimum/ Maximum Horizontal Uniformity3 | Minimum- Maximum Vertical4 (Footcandles) | |
Basic1 | 1-5 | 10:1-5:1 | 0.5-5 |
Ramps5 | |||
Day | 2-5 | 10:1-5:1 | 1-5 |
Night | 1-5 | 10:1-5:1 | 0.5-5 |
Entrance/Exit Areas6 | |||
Day7 | 50 | 25 | |
Night | 1-5 | 10:1-5:1 | 0.5-5 |
Stairways | 2-5 | 1-5 | |
Table based on the Illuminating Engineering Society (IET)
1 For typical conditions.
2 Minimum “maintained” Footcandles measured on the parking surface, without any shadowing effect from parked vehicles or columns. This may require 3-5 Footcandle average
3 The highest horizontal Illuminance area, divided by the lowest horizontal Illuminance point or area should not be greater than the ratio shown.
4 Measured facing the drive aisle at 5 feet above the parking surface at the point of the lowest horizontal Illuminance.
5 Applies only to clearway ramps (with no adjacent parking) but not sloping floor designs.
6 A high Illuminance level for the first 65 feet inside the structure is needed to effect a transition from bright daylight to a lower interior level.
7 Daylight may be considered in the design calculations.
B. Lighting design shall address glare, light pollution (unnecessary light), light trespass (bright visible sources or light spilling into neighboring properties), and reduction of shadows.
C. Provision of signage at exits of the parking structures shall be required.
D. Open-structure wall areas for natural ventilation or mechanical ventilation shall be encouraged.
E. Interaction between vehicles and pedestrians should be provided in a safe manner.
F. Traffic flow by vehicles entering the parking garage shall be mitigated by either on site or external deceleration lanes based on the traffic impact study if required.
G. Bicycle parking facilities for non-residential land uses shall be provided in accordance with the following regulations:
(1) Each bicycle space shall be equipped with a device to which a bicycle frame and 1 wheel can be attached using a chain or cable. There shall be adequate separation between adjacent devices to allow bicycles to be attached or removed without moving other bicycles. The devices shall also be suitable for use by bicycles not equipped with kickstands, and the appearance of the device shall be generally consistent with nearby urban design features.
(2) Bicycle parking spaces shall be convenient to the structure for which they are provided. They shall be visible from at least 1 entrance to the structure.
(3) For every 25 vehicular spaces required, 3 bicycle parking spaces shall be provided.
(Ord. 614, 5/11/2015)