[Adopted 3-11-1963 by Ord. No. 1963-3 (Part 12, Ch. 2, of
the 1976 Code of Ordinances)]
All new developments or subdivisions in the Township shall make
provisions for curbing and, when required by the Lancaster County
Planning Commission, sidewalks, in accordance with the specifications
hereinafter appearing in this article, and the owners of divided tracts
or tracts being developed shall give assurances satisfactory to the
Commissioners that curbing and, when required, sidewalks shall be
erected in accordance with these specifications. The same specifications
shall be adhered to in constructing sidewalks and curbs in developments
previously accepted without sidewalk or curb and in parts of the Township
where sidewalk or curb had not previously been required and, in reconstructing
or repairing any sidewalk or curb, wherever located.
No streets will be accepted unless the required curbing and,
where required by the Lancaster County Planning Commission, sidewalks
have been completed by the developer or owner.
A.
Line and grade. Curbs and sidewalks shall be constructed in accordance
with plans, lines and grades established by or approved by the Township
Engineer. Forms shall be straight and true to grade. Before starting
work, the contractor shall stretch string lines to check the line
and grade. The contractor shall notify the Engineer for final inspection
of string line prior to setting forms.
B.
General requirements.
(1)
Cleaning up. The contractor shall clean and remove from the project
and adjacent property all surplus and discarded materials, equipment
and temporary structures and shall have the project in a presentable
condition throughout within 48 hours after completion of the work.
(2)
Protection. Suitable barricades shall be placed around the work area
in such a manner as to protect both pedestrian and vehicular traffic.
Such barricades shall be properly lighted during the night hours.
(3)
Obstructions.
(a)
When existing structures such as light standards, poles, fire
hydrants, etc., are within the limits of construction, prior to placing
the concrete around such structures, a premolded expansion joint 1/4
inch in thickness shall be placed around the structure for the full
depth of the concrete. The concrete shall be scored in a block eight
inches wider than the maximum dimension of the structure.
(b)
The distance from top of curb to center of the nut on the pumper
connection of fire hydrants shall be not less than 10 inches. Where
the grade will not permit this clearance, a circular depression shall
be placed in the curb to provide the necessary space.
(4)
Restoration of existing sidewalks. When construction under this specification
covers only curbs, it shall be the duty of the contractor to restore
existing brick sidewalk for a distance of 18 inches back of the curb,
or for the first square of concrete sidewalk. The foundation of the
sidewalk shall be thoroughly rammed before the sidewalk is replaced.
(5)
Intersections. At all street intersections, curb returns shall be
constructed with a radius as shown on the plans or directed by the
Engineer. Under no circumstances shall a curb radius be depressed
to form a driveway.
(6)
Expansion joints.
(a)
Where a sidewalk abuts the curb and a building, wall or other
permanent structure, a premolded expansion joint 1/4 inch in thickness
shall be placed between the curb and the sidewalk for the full length
of such permanent structure. Sidewalks shall be constructed in separate
slabs 30 feet in length, except for closures. The slabs shall be separated
by a transverse premolded expansion joint 1/4 inch thick. The slabs
between expansion joints shall be divided into blocks five feet in
length by scoring transversely.
(b)
Curbing shall be constructed in ten-foot sections. A premolded
expansion material having a minimum thickness of 1/4 inch shall be
placed between sections of curved curb and at intervals of not more
than 120 feet in a straight line or straight grade. Intermediate joints
between ten-foot sections shall be formed of two layers of one-ply
bituminous paper.
(7)
Monuments. No monuments or property corners shall be covered or disturbed
by the construction of permanent sidewalk or curb. Whenever monuments
are either above or below the finished grade of the sidewalk, the
owner shall have the monument reset by an engineer prior to pouring
concrete.
(8)
Guarantee. Concrete curbs and sidewalks shall be guaranteed by the
contractor for a period of one year from the date of completion. If
the concrete should fail within the guarantee period, the contractor
shall replace all broken or disintegrated sections.
C.
Materials and mix. All materials shall conform to specifications
for Class A concrete, as specified by the Pennsylvania Department
of Transportation, with a minimum compressive strength of 2,500 pounds
per square inch after 28 days.
D.
Dimensions.
(1)
Curbs. Curbs and sidewalks shall be constructed to the dimensions
shown on the plan of curb and street standards approved by the Commissioners
and Planning Commission.
(2)
Sidewalk thickness. Sidewalks shall have a minimum thickness of four
inches.
(3)
Driveways. The curb shall not be depressed to more than one inch
above the street surface for driveways. For driveways to public garages,
gas stations and places of business, the length of this depressed
curb shall not exceed 35 feet without a safety island. This safety
island shall not be less than 15 feet in length. Pipes or grates or
other constructions shall not be placed in the gutter to form a driveway
ramp.
E.
Foundation.
(1)
Excavation material. Excavation for straight curb shall be made to
the required depth, and the material upon which the curb is to be
constructed shall be compacted to a firm even surface. Where the subgrade
is soft or spongy, a layer of crushed stone or cinders not less than
four inches thick shall be placed under straight curb. Where excavation
is carried below specified subgrade, the excavation shall be refilled
to grade with crushed stone thoroughly compacted.
(2)
Sidewalk and rolled curb. Excavations shall be made to the required
depth, and a layer of crushed stone or cinders not less than four
inches thick shall be placed and thoroughly compacted prior to laying
the sidewalk or rolled curb.
F.
Forms. Forms for straight sections shall be of wood or metal, straight,
free from warp, and of sufficient strength to resist the pressure
of the concrete without springing. If wood forms are used, they shall
be two-inch planks, surfaced on the inside and the top. Forms for
curbed sections shall be wood, tempered hardboards, or metal, free
from warp and imperfections. Curved forms shall be adequately braced
to resist pressure and accurately set to conform to the arcs of the
curves. Forms shall be equal to the depth of the concrete. A front
and back form shall be used for curbs except where a good concrete
sidewalk, which is not to be removed, abuts the new curb. Forms shall
be accurately set to line and grade in such a manner as to prevent
settlement or displacement.
G.
Finishing.
(1)
Curb. All forms must be removed within 24 hours after the concrete
has been placed, and minor defects shall be filled with mortar composed
of one part portland cement and two parts' fine aggregate. The top
and face of the curb from the top to nine inches below or to the top
of the street surface, when in place, shall be finished while the
concrete is still green by rubbing the surface with a carborundum
stone, soft brick or wood block and water until a smooth, even surface
is produced. Brush finishing or plastering will not be permitted.
All joints in the curb shall be promptly opened from top to bottom,
and edges adjacent to the joints shall be sharp and clean cut.
(2)
Sidewalk. Sidewalks shall be finished after pouring before the concrete
sets. Finish shall be broomed to form an abrasive surface.
H.
Curing. Concrete curbs and sidewalks shall be protected from rainstorms
with paper, burlap, canvas or similar materials. In warm weather,
they shall be made wet daily for a minimum of four days. During cool
weather, when concrete is to be placed at temperatures below 50°
F. but not below 35° F., mats or double-thickness burlap shall
be placed over concrete, and, in addition, the contractor shall place
hay or straw over concrete not covered by forms to a depth of one
foot. No concrete shall be placed when the temperature is below 35°
F.
I.
Restoration of surfaces. After the concrete has cured sufficiently,
spaces adjacent to the curb and sidewalk shall be refilled with acceptable
material in layers of not more than four inches in depth. The final
layer of backfill shall consist of topsoil previously stripped, or
new topsoil, and shall be properly seeded. On the roadway side of
all curbs, backfill shall be brought to subgrade elevation, and the
subsequent six inches shall be backfilled with crushed stone, macadam
base material and surfaced with 2 1/2 inches of bituminous material
approved by the Engineer. Concrete curb and bituminous surfacing material
shall be sealed with a thin coating of BM-1 road oil.
[Amended 12-12-1994 by Ord. No. 1994-28[1]]
Any violation of any provision of this article shall constitute
a public nuisance, abatable as such, and, in addition, the violator
shall be subject to a fine or penalty of not less than $50 nor more
than $1,000, and costs.
