The following words and phrases used in this article shall have
the following meanings:
An area which provides vehicular ingress, egress, access
or circulation to or from any public or private right-of-way for any
building structure, parking area or loading area.
All that area of the driveway which is located within the
existing road right-of-way or the future right-of-way as determined
by the WCDPS or any other agency having jurisdiction over the roadway.
In the absence of a road right-of-way, an easement of not less than
60 feet wide shall be assumed to be the road right-of-way.
An off-street space on the same lot with a building, or a
group of buildings, for the temporary parking of a commercial vehicle
while loading and unloading merchandise or materials.
The area which provides adequate access to all parking spaces.
All the area which includes parking spaces, loading space,
and maneuvering lanes.
An area of adequate length and width for the parking of vehicles. The area provided for each parking space shall be in accordance with Chapter 170, Zoning.
The line which defines the boundary between private property
and that land under control of the public agency having jurisdiction
over the roadway. For the purpose of these standards, the right-of-way
line shall further be defined as the future right-of-way line as determined
by the WCDPS of any other agency having jurisdiction over the roadway.
Where Chapter 170, Zoning, requires hard surfacing of parking lots and driveways, the following minimum standards shall apply. These minimums are based on adequate subgrade and drainage. Soil borings will be required for each site, and additional thickness for the pavement or subbase may be required. All construction practices shall be consistent with the 2003 MDOT Standard Specifications for Construction (or most current) or as modified by the WCDPS for locations within their jurisdiction.
A.
Parking lot surfaces (commercial, industrial and multiple-family)
shall be as follows:
(1)
Asphalt surface: a thickness of three inches of bituminous pavement
placed in two one-and-one-half-inch lifts over eight inches of crushed
aggregate base compacted in place. Subgrade shall be proof-rolled
using an eight- to ten-ton roller or approved mechanical compaction
devise.
(2)
Concrete surface. A thickness of seven inches of concrete pavement
placed over four inches of crushed aggregate base compacted in place.
Subgrade shall be proof-rolled using an eight- to ten-ton roller or
approved mechanical compaction devise.
B.
Parking lot layout. The parking lot layout shall conform to the requirements of Chapter 170, Zoning.
C.
Driveway surfaces (commercial, industrial and multiple-family) for
all vehicular access lanes, excluding driveways in parking lots which
are for the exclusive use of passenger cars, shall be as follows:
(1)
Asphalt surface: a thickness of four inches of bituminous pavement
placed in two lifts (one-and-one-half-inch wearing course placed over
two-and-one-half-inch base course) over eight inches of crushed aggregate
base compacted in place. Subgrade shall be proof-rolled using an eight-
to ten-ton roller or approved mechanical compaction devise.
(2)
Concrete surface: a thickness of seven inches of concrete pavement
placed over four inches of crushed aggregate base compacted in place.
Subgrade shall be proof-rolled using an eight- to ten-ton roller or
approved mechanical compaction devise.
D.
Curb and gutter. Concrete curb and gutter, where proposed, shall
be MDOT Detail C4, modified with a reverse slope gutter plan where
appropriate.
E.
Pavement drainage.
(3)
General.
(a)
The disposal of stormwater and the design of the storm sewer
system shall conform to the requirements as established by these standards.
(b)
The point of discharge of stormwater from a parking lot, or
other paved areas, onto a lawn or landscaped area is not permitted.
Sheet flow from parking lots or driveways will be permitted only for
the most extenuating of circumstances. Construction cost is not an
extenuating circumstance.
(c)
The drainage of unrestricted water from paved areas to adjacent
property is not permitted without a written, executed, and recorded
drainage easement which runs with the land. The required easement(s)
must be recorded prior to the start of construction of the site improvements.
(d)
Stormwater disposal to a roadside ditch or any other drainage
system shall receive approval form the agency having jurisdiction
over the drainagecourse, prior to final site plan approval.
F.
Driveway approaches. All driveway approaches to be constructed or
reconstructed within a road right-of-way under the jurisdiction of
the county or state shall be constructed under a permit from that
agency. Evidence of the approval of the proposed construction shall
be obtained from such county or state agency prior to final site plan
approval.
G.
Specifications. All pavements and subbase material shall meet the
current requirements of the MDOT Standards and Specifications. Bituminous
surface courses shall be constructed of MDOT HMA 36A. Base courses
shall be MDOT HMA 13A. Aggregate subbase shall be constructed of MDOT
21AA limestone. Concrete surface shall be MDOT Grade P1.
H.
Plan requirements. The following information shall be shown on all
plans proposing the construction of driveways and parking lots:
(2)
Existing elevations.
(3)
Proposed elevations.
(a)
All radii points.
(b)
All building corners (existing and proposed).
(c)
Pavement elevation at all corners and at fifty-foot intervals
along the edge of the pavement.
(d)
All high points and ridgelines. (Ridgeline and flow arrow must
be shown.)
(e)
Invert at each drainage control point, including swales, ditches,
manholes, catch basins, detention/retention system, etc.
