Slab depth for parking lots should be as shown on the plans.
Recommended parking area slab depths, based on use, are as follows:
Light Use: 4" concrete - Parking for passenger cars, light trucks and occasional use by heavier trucks.
Medium Use: 5" concrete - Driveways and parking areas for light to medium trucks plus occasional use by heavier trucks.
Heavy Use: 6" or thicker concrete - Driveways and parking areas for heavier commercial and industrial trucks. (Pavements for heavy industrial trucks should be designed on an individual basis.)
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