Cross slope at off-street Parking Lot
Cross slope at off-street Parking Lot
(OP)
Some municipalities have standards on the minimum cross slope for the off-street parking lot. Some have minimum 2% cross slope at the parking lot.
Is this for a drainage purpose? I think minimum 2% cross slope is relatively high for shopping center parking lots to use "shopping carts".
What would be a recommended or appropriate "Minimum Cross Slope at Parking Lot" without any drainage issue? 1% or less?
Thanks and have a wonderful day.
Is this for a drainage purpose? I think minimum 2% cross slope is relatively high for shopping center parking lots to use "shopping carts".
What would be a recommended or appropriate "Minimum Cross Slope at Parking Lot" without any drainage issue? 1% or less?
Thanks and have a wonderful day.





RE: Cross slope at off-street Parking Lot
ADA parking code allows a maximum 2% slope (1 in 48) in any direction in a normally "flat" handicaped parking space & adjacnet van loading isle. A 2% slope is considered "flat" in most of the USA and per the ADA.
Clifford H Laubstein
FL PE 58662
RE: Cross slope at off-street Parking Lot
bird baths occur because a) grading and paving operations are not accurate and low spots are created or b) ground and pavement settles causing a low spot. The low spots trap water which then saturates the pavement subgrade further weakening it and eventually causes pavement failure. In order to eliminate them you need a combination of good compaction, accurate staking, and close control on final grading and paving. But without significant slope which is commonly thought to be a minimum of 2%, the bird baths are almost unavoidable. Even in flat land Florida, steeper slopes than 1% can be designed and built with no problems.
RE: Cross slope at off-street Parking Lot
Civil Development Group, LLC
Los Angeles Civil Engineering specializing in Hillside Grading
http://www.civildevelopmentgroup.com
http://www.civildevelopmentgroup.com/blog
RE: Cross slope at off-street Parking Lot