The base course and subbase course shall be
constructed to the lines, grades and cross sections as approved. The
base course shall be constructed in accordance with Township specifications.
(See the Pavement/Underdrain Detail, included at the end of this chapter.)
Street name signs shall be installed at each
street intersection in accordance with the type of materials, designs
and standards established by the governing body for use throughout
the Township.
All storm drainage facilities shall be adequately
designed for the anticipated runoff when the area is fully developed,
using criteria or other methods approved by the Township Engineer.
Storm drainage facilities shall comply with but are not limited to
the following:
A. Storm sewers shall be located in the street right-of-way
or in designated drainage easements.
B. All pipe used in the construction of slope sewers
shall comply with standards set by the governing body.
C. Inlets shall be spaced in accordance with the Pennsylvania
Department of Transportation Design Manual No. 2, but the spacing
shall not exceed 300 feet.
D. Manholes or inlets are required at all changes in
alignment and grade.
E. All storm sewer inlets, manholes, pipes, etc., shall
be PennDOT-approved material, except corrugated metal pipe, and all
catch basins will be cast-iron frames with cast-iron bicycle-safe
cast-iron grates. Concrete riser tops and structural steel grates
are not permitted.
[Amended 10-2-2002 by Ord. No. 471]
F. All roof drains shall be extended to the paved gutters
of streets and connected to the storm sewer system where accessible.
At no time will roof drains or foundation drains be allowed to be
connected to the sanitary sewer system.
G. Any springs encountered during construction shall
be piped and connected to the storm sewer system or extended to a
natural watercourse as may be approved by the Township Engineer.
H. Concrete headwall and splash aprons shall be constructed
at the outfall of all storm sewers. Where watercourses are piped and
filled, concrete headwalls and splash aprons shall be constructed
at both ends of the pipe.
I. Whenever construction stops or concentrates the natural
flow of surface drainage in such a way as to affect adjoining properties,
written approval must be obtained from the adjoining property owners.
Where storm drainage is piped onto adjoining properties other than
natural watercourses, written permission, a release of damages and
right-of-way must be obtained from the adjoining property owners before
the storm sewers are taken over by the Township. Approval of plans
by the Township does not authorize or sanction drainage affecting
adjoining properties.
K. The developer must first submit the stormwater design
to the Westmoreland County Conservation District for approval.
[Added 6-2-2004 by Ord. No. 512]
A. Concrete monuments shall be a minimum size of four
inches by four inches by 30 inches or four-inch diameter by thirty-inch
plastic pipe filled with concrete using an iron rod in the center
or a brass or copper plate on the top for marking the exact point.
Concrete survey monuments shall be required at such points as deemed
necessary by the Planning Agency.
B. Iron markers shall be a minimum size of 1/2 inch diameter
pipe or No. 4 rebar and should have a minimum length of 24 inches.
Iron markers shall be set at all points where lot lines intersect
curves, at all angles in lot lines and tract boundary lines, at all
lot corners and at the beginning and ending of all curves.