The geometric design of a driveway connection
to a street shall be governed by sound traffic engineering principles.
Below are guidelines in preparing a geometric design, but deviation
from them will be necessitated from time to time due to the many variables
encountered in the course of preparing a design. The applicant should
be aware, therefore, that although the driveway layout may conform
to these guidelines, conditions may dictate deviations from them,
and requirements of the Township Engineer shall be final.
A. Two-way operation.
Driveways used for two-way operation shall intersect the street at
an angle as near to 90° as site conditions will permit and in
no case will be less than 75°.
B. One-way operation.
Driveways used by vehicles in one direction of travel, right turn
only, shall not form an angle smaller than 45° with a street.
C. The dimensions
of driveways shall be designed to adequately accommodate the volume
and character of vehicles anticipated to be attracted daily onto the
land development for which a site plan is prepared. The required maximum
and minimum dimensions for driveways connecting to a street at 90°
are indicated below. Driveways serving large volumes of daily traffic
or traffic over 5% of which is heavy truck traffic shall be required
to utilize high-to-maximum dimensions. Driveways serving low daily
traffic volumes or traffic less than 5% of which is heavy shall be
as follows:
(1) Table.
Driveway Type
|
Depressed Width
(feet)
|
Depressed Curb
(feet)
|
Return Radius
(feet)
|
---|
Residential
|
8 to 16
|
12 to 20
|
Not allowed
|
Residential lane 2 to 3 residences
|
16
|
Width plus
|
15 Maximum 4 feet
|
4 to 6 residences
|
20
|
|
|
7 or more residences
|
24
|
|
|
Commercial
|
|
|
|
1-way
|
20 to 34
|
24 to 38
|
25 minimum
|
2-way
|
24 to 46
|
24 to 50
|
40 maximum
|
(2) Driveways
connecting to a street at an angle shall have the same widths as shown
in the table above. The width of depressed curb and the radius of
curb returns shall provide for the sharpest turning radii of vehicles
using the driveway, keeping said vehicles within their prescribed
lanes.
D. Vertical curbs
and alignment.
(1) Any vertical
curb on a driveway shall be flat enough to prevent the dragging of
any vehicle undercarriage. The maximum permitted gradients for driveways
are shown in the following subsection. The profile dimensions given
beyond the sidewalk area are maximum or minimum values for grades
and minimum values for lengths.
(2) Vertical alignment.
(a) Residential.
[1] First
five feet: plus 12%.
[2] Second
five feet: plus 2%.
[3] Then
as a maximum: plus or minus 15%.
(b) Commercial
and multifamily residential. Not greater than 4% within 100 feet of
the curbline, with a maximum of 6% at any other location.
E. Should the sidewalk
be so close to the curb at a driveway with a depressed curb as to
cause the ramp to be too steep and is likely to cause undercarriage
drag, the sidewalk shall be appropriately lowered to provide a suitable
ramp gradient.
F. Future curb or gutter line. Driveways shall be designed and constructed such that the vertical alignment requirements shall begin at the future curb or gutter line of any street. The classification of the road shall be determined from the current Harmony Township Master Plan and the width requirements as set forth in §
425-14C(2) of the Harmony Township Subdivision Ordinance. The cross-section requirements shall be as set forth in the Harmony Township Street and Parking Lot Standards. The area between the existing roadway and the future curb or gutter line shall be paved and graded in accordance with the paving provisions of this chapter.
G. Bridges or culverts
over four feet in diameter. All bridges or culverts in excess of four
feet in diameter, or equivalent, shall be designed in accordance with
the current American Association of State Highway Officials bridge
practice to accommodate an H2O design vehicle.
H. Driveways in excess
of 100 feet in length shall have horizontal alignment such that a
fire truck can negotiate the drive. For the purpose of this determination,
the American Association of State Highway Officials SU design vehicle
shall be used for design purposes.
[Amended 5-3-1994 by Ord. No. 94-4]
The surface of any driveway shall be constructed
with a permanent pavement of a type specified below:
|
Within Township Right- of-way
|
Outside Right-of-Way Maximum Grade Less Than 6%
|
Maximum Grade More Than 6%
|
Within Major Subdivision
|
---|
Residential Classes I and II Bituminous concrete surface course,
Mix 1-5, 2 inches thick
|
X
|
|
X
|
X
|
Bituminous and stabilized base course, 3 inches thick Dense
graded aggregate base course, 6 inches thick
|
X X
|
X
|
X
|
X X
|
Residential, Class III Bituminous concrete surface course, Mix
I-5, 2 inches thick
|
X
|
X
|
X
|
Not Permitted
|
Bituminous course, 3 inches thick Commercial, Industrial and
Multifamily Class IV
|
X
|
X
|
X
|
Not Permitted
|
Bituminous concrete surface course, Mix 1-5, 2 inches thick
|
X
|
X
|
Not Permitted
|
Not Applicable
|
Bituminous and course, 4 inches thick
|
X
|
X
|
Not Permitted
|
|
No driveway shall be permitted to be constructed over or across the normal drainage gutter line of an existing street, except on approval of the Township Engineer. The Township Engineer shall be guided by the design standards set forth in Chapter
376, Site Plan Review, and Chapter
425, Subdivision of Land.
No certificate of occupancy shall be issued unless all driveways on the lot or site have been completed in accordance with the approved plan. Inspection to assure compliance will be done by the Township Engineer, except that Class I driveways shall be inspected by the Zoning Officer. Notwithstanding anything to the contrary hereinbefore mentioned, an applicant may, during the period from November 1 to April 15, apply for a certificate of occupancy and defer completion of a driveway on the lot or site in accordance with the approved plan; provided, however, that such applicant posts a performance guaranty with the Township or, in lieu thereof, cash in an amount equal to 120% of the performance guaranty estimate prepared by the Township Engineer of the cost of completing construction of the driveway. The Township Engineer, in arriving at the performance guaranty estimate, shall be guided by the surface and other applicable provisions of this chapter, together with the design standards set forth in Chapter
376, Site Plan Review.
[Amended 8-3-2004 by Ord. No. 04-10]
A. Application fee
for all classes (Classes I, II, III, IV): $25.
B. Review inspection
and administration fee for all classes (Classes I, II, III, IV): $250.
C. Additional fee, in addition to Subsections
A and
B above, for driveways in excess of 12% slope: $300.
D. Replenishment
of escrow. When review and inspection costs exceed the initial escrow
deposit, applicant shall, upon notification from the Township Engineer,
pay such additional escrow deposit as requested, which shall be paid
prior to Township Engineer's issuance of the certificate of approval
(C.A.) which certifies completion of the driveway in accordance with
the compliance standards established herein.
All users of a driveway as covered by the terms
of this chapter shall be required to submit a written agreement to
be approved as to form by the Township Attorney acknowledging responsibility
to continue maintenance of the driveway in accordance with the standards
of this chapter.
[Added 12-5-2017 by Ord.
No. 17-12]
A. No person, persons, entity or
organization shall construct any alterations and/or improvements to
any driveway within the Township which would interfere or impede access
of emergency service vehicles to the property. Alterations are defined
as any changes, alterations or improvements constructed on or adjacent
to a driveway that was not approved as part of the property's driveway
permit. Alterations include but are not limited to placing of boulders,
fences, signs or other decorative items at the entrance or along the
edge of a driveway.
B. A determination as to what alterations
impede or interfere with the access of emergency service vehicles
shall be made by the Chief of the Harmony Township Fire Department.
C. Landowners or tenants wishing
to make an alteration to their driveway, other than what was approved
as part of the original driveway permit, should make an application
to the Township Clerk who will forward the application to the Fire
Chief for determination.
D. Any alterations installed that
are found by the Harmony Fire Chief to be in violation of this section
shall be given notice of the violation and 30 days to remove or relocate
the alterations to the satisfaction of the Fire Chief.
E. Any person, persons, entity or organization who violates this section shall be subject to the penalties as set forth in §
194-13.
F. In addition to the violations
set forth above, any landowner who was previously notified of an improper
alteration shall be responsible for any damage to any emergency service
vehicle resulting from the vehicle attempting to access the property
to provide emergency services.
G. No emergency service agency/organization/company
or the Township shall be responsible for any damage to a property
or its alterations resulting from an attempt to access the property
to provide emergency services, provided the landowner, tenant or occupant
was previously notified of the improper driveway alteration.
[Added 6-9-2011 by Ord. No. 11-3]
A. An applicant for a permit for
any class of driveway who is unable to comply with any of the design
standards and/or construction improvement requirements applicable
to a driveway by virtue of the foregoing provisions may apply to the
approving authority for an exception to such requirements, providing
the applicant shall clearly demonstrate and the approving authority
shall be satisfied that such exception is reasonable and within the
general intent and purpose of the provisions of this chapter and that
the literal enforcement of one or more of the provisions hereof is
impractical or will exact undue hardship because of peculiar conditions
pertaining to the subject property and the driveway proposed to be
located thereon.
B. Provided, however, that the approving
authority shall not grant any such exception unless the approving
authority is fully satisfied that the intent and purpose section will
be satisfied by the granting of the exception and that the granting
of the exception will have no adverse impact upon the public health
and safety relating to the proposed driveway or be in conflict with
accepted engineering principals. All doubts in the mind of the approving
authority with respect to the advisability of the granting of any
such exceptions shall be resolved in favor of a denial of such exceptions.
C. In the event the applicant for
an exception from the provisions of this chapter is denied the exception
sought, he shall have the right to appeal such denial to the Land
Use Board, which shall hold a hearing thereon, attended by the Township
Engineer, which shall render a determination within 45 days of the
submission of such appeal.
D. Prior to the hearing of such appeal to the Land Use Board, the applicant shall post with the Board secretary an appeal application fee and escrow deposit in accordance with §
525-63, Fees, of Chapter
525 of the Code.
E. Any application for an exception pursuant to the foregoing provisions from the requirements of §
194-3, Location, Subsection
D, which seeks approval of a driveway located less than the minimum required 10 feet from a side property line and/or less than 10 feet from a rear property line shall require that notice of said application be given to the owner(s) of the property adjoining the portion of the applicant's property which proposes a driveway location less than 10 feet from a side or rear property line. Such notice shall be provided, either by personal service or by means of certified mail, return receipt requested, and proof of service of such notice shall be provided at least 10 days prior to the hearing to be held upon the application and filed with the Land Use Board secretary.