[Amended 4-27-2006 by L.L. No. 2-2006]
A.
The laying and/or grading of subgrade or subbase courses
shall occur only between April 15 and the third Saturday in November
and only if the surface temperature is at least 45° F. (7.2°
C.) at the time of grading or the laying of materials.
B.
After the completion of the rough grade and prior
to the laying of the subbase course, the subgrade shall be shaped
to line and grade and thoroughly compacted with an approved self-propelled
vibratory roller weighing not less than 10 tons. All hollows and depressions
that develop under rolling shall be filled with acceptable granular
material and again rolled; this process to be continued until ninety-five-percent
standard density is achieved. The subgrade shall not be muddy or otherwise
unsatisfactory when the subbase course is laid upon it.
C.
Any soft or unstable portions of the subgrade or subbase
that develop under the roller shall be completely excavated and removed
from the right-of-way and shall be replaced with acceptable granular
material and the area regraded and compacted as above.
A.
Before fine grading or the construction of curbs and
sidewalks is started, all storm and sanitary sewers and all utilities,
including house connections and hydrants, shall have been installed
and all fill and backfill shall have been thoroughly compacted to
the satisfaction of the Town Superintendent of Highways.
B.
Fine grade shall conform to the prescribed width of
pavement and shall extend equidistant from the center line of the
road right-of-way and shall conform to the typical cross sections
of the road pavement and to the approved line and grade.
A.
After the fine grade has been constructed to the satisfaction
of the Town Superintendent of Highways, the developer shall furnish
and place a subbase course of approved New York State Department of
Transportation Item 304-2 Type 1 gravel.
B.
The materials shall be placed on the finished subgrade
by means of mechanical spreaders in six-inch compacted lifts and shall
be thoroughly compacted by rolling with a self-propelled ten-ton vibratory
roller. Water shall be added to the materials in such amounts as the
Town Superintendent of Highways may consider necessary to achieve
ninety-five-percent standard density.
C.
After compaction, the subbase course shall be true
to grade and cross sections, and any depressions shall be eliminated
by the use of additional materials, thoroughly rolled in place. In
all cases, the subbase course must be so thoroughly compacted that
it will not weave under the roller, and the total depth after compaction
shall not be less than 12 inches. Material testing may be required
by the Superintendent of Highways.
|
Specification
|
Gradation Type
|
Sieve Size Designation
|
Percent Passing By Weight
| |
|---|---|---|---|---|
|
NYSDOT 304-2.02
|
1
|
3 inch
|
100
| |
|
2 inch
|
90 to 100
| |||
|
1/4 inch
|
30 to 65
| |||
|
No. 40
|
5 to 40
| |||
|
No. 200
|
0 to 10
| |||
|
2
|
2 inch
|
100
| ||
|
1/4 inch
|
25 to 60
| |||
|
No. 40
|
5 to 40
| |||
|
No. 200
|
0 to 10
| |||
|
3
|
4 inch
|
100
| ||
|
1/4 inch
|
30 to 75
| |||
|
No. 40
|
5 to 40
| |||
|
No. 200
|
0 to 10
| |||
|
4
|
2 inch
|
100
| ||
|
1/4 inch
|
30 to 65
| |||
|
No. 40
|
5 to 40
| |||
|
No. 200
|
0 to 10
| |||
|
Underdrain filter
(NYSDOT 605-2.02)
|
II
|
1/2 inch
|
100
| |
|
1/4 inch
|
20 to 100
| |||
|
No. 10
|
0 to 15
| |||
|
No. 20
|
0 to 5
|
