The developer shall establish and clearly mark
on site the limits of highway right-of-way and easements, the center
line and grades of the road pavement and the location and elevation
of drainage and drainage structures in accordance with the approved
plans. Such markers shall be maintained at the developer's expense
until the construction of all required improvements within the right-of-way
limits has been completed, inspected and approved by the Town Superintendent
of Highways.
B.Â
For highways meeting the criteria set forth in § 93-8D, the developer shall clear the entire area within the limits of:
[Added 11-24-2008 by L.L. No. 4-2008[1]]
(1)Â
The roadway.
(2)Â
Stream channels and ditches.
(3)Â
Easement areas, exclusive of trees designated on the
plat to remain.
(4)Â
Clearing should be in general compliance with Cornell
Local Roads Program Standards (2008).
[1]
Editor's Note: This local law also provided
for the redesignation of former Subsection B as Subsection C.
C.Â
All roots and stumps shall be grubbed, excavated and
removed from the above areas.
A.Â
The developer shall complete the shaping of the highway
right-of-way, streams and ditches and easement areas to the line and
grade as shown on the approved plans and as otherwise may be directed
by the Town Superintendent of Highways. All unsuitable or unstable
materials shall be completely excavated and removed from the right-of-way,
and all rock or boulders larger than six feet in diameter shall be
excavated at least eight inches below the finished subgrade of road
pavement, drainage or drainage structures, curbs and sidewalks.
B.Â
Where fills are necessary to complete the required
line and grade or to backfill trenches or other excavation, the materials
incorporated in the work shall be acceptable to the Town Superintendent
of Highways and shall be placed in layers not exceeding eight inches
in depth, each layer to be thoroughly compacted by rolling with a
ten-ton vibratory roller or by impact rammer or vibrator equipment
in areas inaccessible to power rollers. All compaction shall continue
until the fills are to 95% of the standard density. Special care shall
be exercised in placing and compacting material immediately adjacent
to pipes in order to avoid damage to the pipe and to prevent pipe
misalignment.
C.Â
The areas between the road shoulder edge or curbing
and the right-of-way line must be graded and seeded in order to prevent
erosion.
D.Â
The rough grade of the road pavement, curb and sidewalk
areas shall be completed to within one inch above or below finished
subgrade as shown on the approved cross section of the right-of-way
improvement.
E.Â
Earth shoulders and the flow line of ditches and gutters
shall be maintained in satisfactory condition at the developer's expense
at all times during the course of construction of the subdivision
and until such time as the Town Board has accepted dedication of the
right-of-way.
F.Â
During the entire period of construction, the developer
will control erosion in accordance with the Town's Erosion Control
Plan or by methods approved by the Town Superintendent of Highways.
A.Â
The width of the trench in which the pipe is placed
shall be sufficient to permit thorough tamping of the backfill under
the haunches and around the pipe. Where rock, in either boulder or
ledge formation is encountered, it shall be removed below grade and
replaced with suitable materials in such a manner as to provide an
earth cushion having a thickness under the pipe of not less than eight
inches; and where there are excessively heavy fills over the top of
the pipes, the Town Superintendent of Highways may specify that a
sand cushion up to 1/2 inch in thickness per foot of fill be placed
over the top of the pipe. In no case shall the top of any drainage
pipe be less than 18 inches below the finished grade of the pavement.
Where soft, spongy or other unstable soil is encountered at the grade
established, all such unstable soil under the pipe and, for a width
of one diameter on each side of the pipe, shall be removed and replaced
with run-of-bank gravel or other acceptable material. In all cases,
the bed shall be thoroughly compacted and shall provide a firm foundation
for the pipe.
B.Â
Pipe shall be laid to a true line and grade on the
prepared bed of the trench. Pipe laying shall begin at the downstream
end and progress upstream.
D.Â
Any additional drainage facilities not shown on the
approved plan and which may be ordered by the Town Superintendent
of Highways shall be constructed by the developer at the developer's
expense and in accordance with these specifications.
A.Â
It is the intent of this specification that all disturbed
areas within the right-of-way due to highway construction and placement
of utilities shall be restored to conditions acceptable to the Town.
B.Â
The removal of all equipment and parts, junk, rubbish,
excess material, debris of all kinds and trees damaged beyond repair
shall be included in the restoration work.
C.Â
All unpaved areas within highway rights-of-way and
newly created or stripped earth slopes shall be seeded in accordance
with Section 610-3.02 of current Standard Specifications of New York
State Department of Transportation.
D.Â
In order to control soil erosion, sodding shall be
placed on areas designated by the Town Superintendent of Highways
in accordance with Section 612-3.01 of current Standard Specifications
of New York State Department of Transportation.
A.Â
Finished tangent grades for highways shall not be less than 2.0% nor more then 10.0% except for highways meeting the criteria set forth in § 93-8D and common driveways, which shall not have a finished tangent grade in excess of 12.0%.
[Amended 11-24-2008 by L.L. No. 4-2008]
B.Â
Every change in grade shall be effected with a vertical
curve of sufficient length to ensure adequate stopping sight distance
and to provide for smooth transition. These vertical curves shall
be designed in accordance with the graph shown on Figures 5 and 6
of Appendix B of these specifications.[1]
[1]
Editor's Note: Appendix B, containing Figures
5 and 6, is located at the end of this chapter.
