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Parking Lot Design 101

Parking Lot Design 101. Sustainable Futures 2007. Scott Shannon, Associate Professor SUNY-ESF. Photo- Tim Toland. General Organization. ALWAYS design parking to be "double loaded," i.e. parking stalls are placed on both sides of a circulation aisle

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Parking Lot Design 101

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  1. Parking Lot Design 101 Sustainable Futures 2007 Scott Shannon, Associate Professor SUNY-ESF Photo- Tim Toland

  2. General Organization • ALWAYS design parking to be "double loaded," i.e. parking stalls are placed on both sides of a circulation aisle • As a general rule: parking spaces are always 9’ to 10’wide x 20’ long, AND circulation aisles are 20’ to 24’ wide. Always check local codes, these dimensions commonly vary by jurisdiction! City of Renton, OR Development Code

  3. General Organization Unless you are constrained in the width of a parking area, ALWAYS orient your parking at 90o to the circulation aisle. Angled parking is less efficient and less safe, and only helps in space constrained situations. On exception to this rule is for on-street applications. On-street, both “nose-in” and “back-in” angled parking is now being used to encourage traffic calming. City of Renton, OR Development Code

  4. General Organization • ALWAYS design parking lot circulation for two-way traffic. It is safer, more efficient, and more convenient. Lawrence, KA Public Library

  5. Details: Planting Islands • If possible, always end a row of parking spaces with a planting island. Planting islands should NEVER be less than 5’ wide, preferably 10’ wide. • Always "round" the outside corners of planting islands, intersections of isles, etc. (2.5’ min. radius) concretenetwork.com - Bannister Park, Fair Oaks, CA Living Desert Museum, Palm Desert, CA Scott Shannon

  6. General Organization • In large parking areas (50+ spaces), orient aisles to direct pedestrians to the destination (building, etc.) • Also, allow pavement to extend between rows of parking (don’t put a planting strip here!). This is mostly a concern here in northern climates for snow removal, it isn’t a hard rule in warmer climates (Philadelphia & south). • Finally, if possible, ALWAYS design your parking areas using a circulation loop, not a dead end. USAF Landscape Design Guide USAF Landscape Design Guide

  7. Details: Bumper Overhang Considerations • While each parking space may easily accommodate the dimensions of an entire car, inevitably, when spaces nose up to a walk or planter, cars will overhang outside of the space.

  8. Details: Pedestrian Circulation Remember, the sole purpose of the parking lot is to provide an opportunity for the occupants of vehicles to become pedestrians. Design for the pedestrians too! Photo courtesy of LandDesign Photo courtesy of LandDesign

  9. ADA Accessibility Parking lots need to be ADA compliant too. There should be at least one accessible parking space for every 10 typical spaces. Each accessible space shall have an adjacent individual 5’ wide access isle (i.e. two spaces may not share one isle). 5’ min. Cornell University – Northeast ADA & IT Center Living Desert Museum – Palm Desert, CA Scott Shannon

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