A.
Number of copies: six paper prints.
B.
The drawing.
(1)
Size shall be 20 inches by 36 inches or 18 inches by 20 inches. If
more than one sheet is required, match lines shall be shown.
C.
Title block and notations.
(1)
Total number of lots proposed for each tract and for each section
if the subdivision is to be filed in sections.
(2)
North arrow and scale.
(3)
Name of the subdivision.
(4)
Post office address of the subdivision.
(5)
School district and fire district.
(6)
Water company or district.
(7)
Name and address of the developer and the owner.
(8)
Total acreage of the subdivision.
(9)
Zoning district.
(10)
Name, address, license number and seal of the professional engineer
or land surveyor who prepared the drawings. Date of the original preparation
and of each subsequent revision.
(11)
Lots should be numbered in consecutive order on the plan.
D.
Key map. Key map at a scale of one inch equals 600 feet, showing
proposed subdivision streets and surrounding streets, existing or
proposed, and also any municipal boundary or any county, state or
federally owned lands or waters that lie within 500 feet of the premises.
E.
The plan. A complete subdivision boundary description.
(1)
Existing conditions:
(a)
Boundaries and recorded owners of adjacent properties and of
adjacent properties which are part of a subdivision.
(b)
Topographic contours at two-foot intervals in the United States
Coast and Geodetic Survey datum referred to mean sea level. Contours
shall extend 200 feet beyond the subdivision boundary line. Smaller
or larger contour intervals may be used due to the nature of the terrain,
after approval of the Planning Board. Marshes, ponds, streams and
other similar conditions on the subdivision or within 200 feet of
the boundaries showing the waterline as of the date of the survey,
depth of the water at critical points and whether water bodies are
tidal.
(c)
Existing streets on the subdivision and within 200 feet of its
boundaries, including name, location, width, center line elevations
at intersections and critical points, and type of street improvement.
(d)
Drainage structures on the subdivision and within 200 feet of
its boundaries, including type of structure, location, invert elevations,
gradients and sizes of pipe or other structures.
(e)
Utilities, such as water, gas or electric on the subdivision
and within 200 feet of its boundaries.
(f)
Test hole data, including location, elevation and boring log.
Borings shall be taken to a minimum depth of 15 feet or to groundwater
in all locations where drainage structures requiring seepage are to
be constructed and at any other location that the Village Engineer
or Planning Board may request.
(g)
Buildings or other structures located on the proposed subdivision
or within 200 feet of its boundaries.
(2)
Proposed conditions.
(a)
Proposed street profiles, showing tentative grades, elevations
and datum used, stationed to conform to center-line stationing as
shown on the plan; proposed street names and right-of-way widths.
(b)
Lot lines and dimensions to the nearest foot.
(c)
Approximate area of each lot in square feet.
(d)
Easements or reserved areas with notations referring to the
purposes or restrictions.
(e)
Preliminary stormwater drainage system including sizes, tentative
invert elevations and locations of all piping and structures.
(f)
Watershed outlines and their approximate area in acres.
(g)
Preliminary drainage calculations.
(h)
Building setback line.
A.
Number of copies: six black and white prints (three cloth and three
paper).
E.
The plan.
(1)
Exact bearings and dimensions of all property lines.
(2)
Street names as approved by the Planning Board.
(3)
Lots numbered in consecutive order.
(4)
Water main locations and sizes.
(5)
Fire hydrants or fire wells.
(6)
Sanitary waste disposal system as approved by the Suffolk County
Department of Health or Department of Environmental Control.
(7)
Two concrete monuments at each street intersection. The subdivision
shall be tied in to the New York State Coordinate System where practical.
(8)
Exact area of each lot.
(9)
Accurate dimensions on all exterior and interior property lines,
including lot lines.
F.
Signed statements.
(2)
Whichever of the following is applicable:
(a)
"The Subdivider has irrevocably offered to cede title to the
Village of Sag Harbor of the land areas designated for streets, and
any other lands noted on this Plat for dedication to the Village.
Approval of this Plat does not constitute acceptance by the Village
of the offer of dedication."
(b)
"No offer of dedication of the streets or reserved areas, as
they appear on this Plat, is made to the public, nor is the Incorporated
Village of Sag Harbor in any way responsible for their maintenance."
|
Owner
|
A.
Number of copies: Original linen and three black and white prints.
D.
F.
Design calculations. Final design calculations shall be submitted
on sheets 8 1/2 inches by 11 inches in size in a form acceptable
to the Village Engineer or authorized agent and signed by the developer's
engineer.
The following criteria shall be the basis for the design of
all streets and stormwater collection systems:
A.
Streets. All streets and highways shall be designed in accordance
with the following minimum standards:
(1)
Street widths.
|
Type of Street
|
Right-of-Way Width
(feet)
|
Paved Width
(feet)
| |
|---|---|---|---|
|
Collector
|
66
|
34
| |
|
Street
|
50
|
24
|
(3)
Vertical alignment.
(a)
Gradients of all streets shall conform as much as possible to
the natural terrain, but shall not be more than 6% nor less than 1/2
of 1%.
(b)
All changes in grade of more than 1% shall be connected with
a vertical curve.
(c)
The length (L) in feet of a vertical curve shall be related
to the algebraic difference in the percent of grade (A) and a constant
(K = 28 for minor streets and K = 50 for collector streets) according
to the following formula:
|
L = KA
| |
|---|---|
|
This formula shall be used for both sag and crest vertical curves.
|
(d)
Road gradients approaching intersections shall not exceed 3%
commencing at a point at least 50 feet from the nearest intersecting
right-of-way line measured along the center line of the road.
(5)
Cul-de-sac streets. Dead-end or cul-de-sac streets are generally
not desirable unless it can be shown to the Planning Board that through
traffic on such streets is not essential to the street system. Cul-de-sac
streets shall not exceed 400 feet in length and shall terminate in
a circular turnaround having a minimum right-of-way radius of 50 feet
and a minimum paved radius of 35 feet.
B.
Stormwater collection systems. All stormwater collection systems
shall be designed in accordance with the following minimum standards:
(1)
Formulas.
(a)
The collection system shall be designed in accordance with the
rational method of design, using the formula:
|
Q = A•ir
| ||||
|---|---|---|---|---|
|
Where:
| ||||
|
Q
|
=
|
Discharge in cubic feet per second.
| ||
|
A
|
=
|
Tributary drainage area in acres.
| ||
|
i
|
=
|
Coefficient of runoff of the drainage area and shall be selected
in accordance with drainage area conditions but in no case will less
than the following values be accepted:
| ||
|
Zoning District
|
Hilly Terrain
|
Flat Terrain
| |
|---|---|---|---|
|
Residence A
|
0.28
|
0.22
|
(b)
The rainfall intensity (R) in inches per hour shall be determined
by the following formula:
|
R =
|
120
t + 20
|
|
Where:
| ||||
|---|---|---|---|---|
|
t
|
=
|
Time of concentration in minutes.
| ||
(c)
Pipes, conduits or ditches shall be designed by the use of the
Manning formula:
|
V =
|
1.486 x R 2/3 x S 1/2
N
|
|
Where:
| ||||
|
V
|
=
|
velocity in feet per second.
| ||
|
R
|
=
|
hydraulic radius in feet
| ||
|
n
|
=
|
0.015 for reinforced concrete pipe 18 inches in diameter or
less.
| ||
|
n
|
=
|
0.013 for reinforced concrete pipe larger than 18 inches in
diameter.
| ||
|
N
|
=
|
0.025 for earth ditches.
| ||
|
n
|
=
|
0.013 for paved ditches.
| ||
|
S
|
=
|
slope in feet per foot.
| ||
|
Design velocities shall be limited to three feet per second
minimum and 15 feet per second maximum.
| ||||
(2)
Installation.
(a)
Manholes. The maximum distance between manholes shall be 350
feet. Manholes shall be provided wherever branches are connected,
pipe sizes are changed or there are changes in pipe alignment or pipe
gradients.
(b)
Catch basins. No more than two catch basins shall be interconnected
before being connected to a manhole.
(c)
Piping. Pipelines shall be laid on accurate grade and in a straight
line between the manholes, pipelines shall be placed as nearly as
possible on the center line of the road.
(3)
Seepage pools. Seepage pools shall provide a storage capacity of
20% of the computed runoff based upon a four-inch rainfall.
(4)
No stormwater drainage system shall be so designed and constructed
as to direct surface water runoff directly into any surface water
body or tidal or freshwater wetland, without first passing through
a suitable structure designed, to entrap pollutants before discharge
of the drainage water into surface water bodies or tidal or freshwater
wetlands.
[Added 12-3-1985]
A.
Standard details. All manholes, catch basins, seepage pools, recharge
basins and road cross sections shall be constructed in accordance
with the Planning Board's Standard Detail Sheets. Reproducibles
of these drawings may be obtained at the Planning Board office. A
print of the appropriate Standard Detail Sheet shall be incorporated
in each set of final road and drainage plans submitted for the Village
Engineer's or Planning Board's approval.
B.
Portland cement concrete.
(1)
Proportioning. Concrete shall consist of one part portland cement,
two parts of clean, washed sand and four parts of three-fourths inch-broken
stone or clean, washed gravel.
(2)
Strength. All concrete shall have a minimum compressive strength
of 3,500 pounds per square inch when tested 28 days after pouring.
(3)
Temperature. Concrete shall be poured at a minimum temperature of
40° F. and rising.
(4)
Curing. Concrete shall be maintained in a moist condition for at
least five days after placement.
(5)
Rejection. All concrete shall be deposited with a designed slump
of four inches to five inches. Any concrete not acceptable to the
Village Engineer shall be rejected and immediately removed from the
job site.
C.
Reinforcing steel.
(1)
Material. All reinforcing steel shall conform to ASTM Specification
A15-62T with deformations conforming to ASTM Specification A305-56T,
or to the latest ASTM specifications.
(2)
Placing. Reinforcement shall be accurately placed in accordance with
the approved plans and shall be held securely in place during the
pouring of the concrete.
D.
Drainage piping.
(1)
Material. All drainage piping shall be reinforced concrete pipe in
accordance with ASTM Specification C76-62T, or the latest ASTM specifications.
(2)
Placing. All drainage piping shall be accurately laid to the grades
as shown on the plans. Pipe shall be well bedded in place and laid
with bell ends up grade with all joints adequately cemented.
E.
Road construction. All streets shall be paved with an asphaltic concrete
wearing surface to the minimum widths as hereinbefore shown. The base
course shall consist of a mixture of soil and bitumen on an approved
subbase and subgrade. The cross section shall be as shown on Standard
Detail Sheet Number 2.
F.
Clearing and grubbing. All trees, stumps, large stones and debris
shall be removed from the construction area to a distance of six feet
from the edge of the pavement.
G.
Preparation of subgrade. All topsoil shall be removed from the construction
area and stockpiled for use on bank slopes. Before any base course
material is placed, the subgrade shall be carefully shaped to the
approved cross section and profile and then compacted with a self-powered
roller weighing at least 10 tons to a compacted density of 95% at
optimum moisture content. In case unsuitable material is encountered
at the subgrade level, such as loam or clay, it shall be removed to
a depth of at least 12 inches and backfilled with suitable material
in four-inch layers to the subgrade elevation. Upon completion of
the subgrade compaction, the developer shall request an inspection
by an authorized representative of the Village and shall not proceed
with further road work until such inspection has been made and the
work approved.
H.
Base course. The base course shall consist of a combination of soil
and bitumen uniformly mixed and compacted to a depth of four inches.
(1)
Soil. Soil for the base course shall consist of existing material,
approved selected material or a combination of these materials. It
shall consist of a mixture of nonplastic, well graded sand, silt and
clay conforming to the following minimum standards:
(a)
Liquid limit 25 maximum: sand 70 to 85%.
(b)
Plasticity index six maximum: silt 10% to 20%.
(c)
Shrinkage limit 14 to 20: clay 5% to 10%.
(d)
Centrifuge moisture equivalent, 15 maximum: passing No. 10,
20% to 100%.
(e)
Shrinkage ratio 1.7 to 1.9: passing No. 40, 10% to 70%.
(f)
Volume change, zero to 10: passing No. 200, 3% to 25%.
(g)
Lineal shrinkage: zero to three.
(2)
Bituminous material. The bituminous material shall be liquid at normal
temperatures and shall have normal penetrating qualities. The following
kinds are acceptable:
(3)
Job mix. The developer shall submit a laboratory analysis of the
soil to be used in the base course to the Village Engineer. The analysis
shall show the soil gradation, loose dry weight, Florida bearing value,
sand equivalent, plasticity index, admix required and amount and type
of bituminous material to be used per square yard.
(4)
Preparation of soil. The soil shall be plowed to a depth of approximately
that of the stabilized base course and for the full width of the proposed
surface. After plowing, the soil shall be disced, harrowed and all
roots, foreign matter and stones larger than one inch in diameter
shall be removed.
(5)
Moisture content of soil. Mixing operations shall not be performed
when the moisture content of the soil is such as to prevent a uniform
mixture of the soil and bitumen.
(6)
Applying and mixing bituminous material. After the soil has been
adjusted to the proper moisture content and shaped to the approved
line and grade, the bitumen shall be applied uniformly over the entire
base course by means of a pressure distributor. No single application
of bitumen shall exceed 0.5 gallons per square yard. Mixing shall
be done with blade graders, disc harrows or approved mechanical pulvimixers.
Continuous mixing shall follow immediately after each application
of the bitumen and the mixing shall continue until the soil and bitumen
are thoroughly mixed, homogenous and uniform in appearance.
(7)
Aeration. The mixture shall be aerated by loosening and turning the
material by means of plows, harrows, blades or other approved mechanical
methods until the mixture becomes tacky.
(8)
Shaping. As soon as the mixture becomes tacky, it shall be shaped
to the specified uniform thickness and approved cross section and
profile.
(9)
Compacting. Immediately following shaping of the base course, it
shall be compacted with a self-powered roller weighing at least 10
tons. Rolling shall continue for a minimum of six rollings and as
many more as necessary to remove all tracks produced by the roller
wheels. Along places not accessible to the roller, the base course
shall be tamped thoroughly with mechanical tampers or approved hand
tampers weighing not less than 25 pounds having a bearing area not
exceeding 48 square inches. Upon completion of the base course compaction,
the developer shall request an inspection by the Village Engineer
and shall not proceed with further road work until such inspection
has been made and the work approved.
I.
Asphaltic concrete paving. After completion and approval of the base
course, asphaltic concrete with a minimum thickness of 1 1/2
inches shall be placed.
(1)
Materials.
(a)
Asphalt cement. The asphalt cement shall meet the following
requirements:
[1]
Homogenous and free from water.
[2]
Specific gravity at 77° F. shall be 1.00 to 1.04 for petroleum
asphalts.
[3]
Penetration at 77° F., 100 grams, five seconds shall be
85 to 100.
[4]
Percentage penetration at 39.2° F., 200 grams, one minute
to the penetration at 77° F. shall be not less than 30.
[5]
The loss on heating at 325° F. shall be not more than 1%
and the penetration of the residue shall be not less than 60.
[6]
Solubility in carbon tetrachloride shall be not less than 99.5%
for petroleum asphalts.
[7]
It shall not flash below 34.7° F. when tested by the Cleveland
open cup method.
[8]
The ductility at 77° F. shall not be less than 60.
(b)
Asphaltic concrete. The asphaltic concrete shall consist of
a uniform mixture of broken stone, sand mineral filler and hot asphalt
cement in accordance with the following:
|
Material
|
Sieve Size
(square openings)
|
Percent Passing by Weight
| |
|---|---|---|---|
|
Broken stone
|
1/2 inch
|
100
| |
|
Broken stone
|
3/8 inch
|
50 to 100
| |
|
Sand and stone screenings
|
No. 4
|
30 to 70
| |
|
No. 10
|
22 to 45
| ||
|
No. 40
|
22 to 35
| ||
|
No. 80
|
7 to 20
| ||
|
No. 200
|
3 to 6
|
|
The normal asphalt content shall be 5% to 7 1/2% by weight
of total mix. The upper limit may be raised when using absorbative
aggregate. The coarse aggregate shall consist of clean, durable broken
stone showing a percent of wear when tested by the Deval method, ASTM
Designation D-2-33, or subsequent revisions, of not more than 3.5.
It shall show not over 10% loss when subjected to five cycles of a
sodium or magnesium sulphate soundness test, ASTM Designation C-88-41T,
or subsequent revisions. Coarse aggregate shall be considered to be
that portion retained on the No. 4 sieve. The fine aggregate shall
consist of clean, natural washed sand, rock sand or a combination
of any of these materials.
|
(2)
Placement. Prior to the arrival of the mixture on the job, the base
course shall be cleaned of all loose and foreign material. The paving
shall be deposited on the base course by an approved mechanical spreader
and compacted to a minimum thickness of 1 1/2 inches with a self-powered,
ten-ton two-wheel roller. Rolling shall continue until all irregularities
and roller marks have disappeared and the surface shows no further
compressibility. All pavement not accessible to the roller shall be
tamped with heated tampers weighing not less than 25 pounds and having
a bearing area not exceeding 48 square inches. The finished surface
shall be smooth and even and shall not vary more than 1/4 inch in
10 feet from the cross section nor more than 3/8 inch from true elevation.
The installation of the asphaltic concrete paving shall be coordinated
with the Village Engineer, who shall inspect the work to determine
that it complies with this code.
[Amended 6-4-1985 by L.L. No. 11-1985]
J.
Shoulders. After curing of the base course, the shoulders shall receive
a double surface treatment of blue stone.
(1)
First application. MC-2 at the rate of 0.5 gallons per square yard
shall be applied and covered with three-eights-inch blue stone at
the rate of 35 pounds per square yard and then rolled with a ten-ton
roller.
(2)
Second application. RC-2 at the rate of 0.5 gallons per square yard
shall be applied and covered with three-eighths-inch blue stone at
the rate of 20 pounds per square yard and then rolled with a ten-ton
roller. All excess and loose stone and other material shall be removed.
K.
Bank slopes. Bank slopes shall be topsoiled and seeded as directed
by the Village Engineer or the Planning Board.
L.
Street signs. Street signs shall be provided at all intersections
and shall conform to the detail shown on Standard Detail Sheet Number
2.
M.
Street trees. Street trees shall be provided in all subdivisions.
(1)
Trees shall be of nursery stock of an approved species grown under
the same climatic conditions as at the location of the subdivision.
(2)
The average trunk diameter measured at a height of six feet above
the finished ground level shall be a minimum of two to three inches
depending on good practice with reference to the particular species
to be planted.
(3)
Trees shall be planted at intervals of from 40 to 60 feet apart,
depending upon the species, along both sides of the street and shall
be located within the street right-of-way eight feet from the property
line. Where there are existing trees appropriate to this use, they
shall be preserved and used insofar as practical.
(4)
All planting shall be done in conformance with good nursery and landscape
practice.
N.
Fire wells. Fire wells shall be provided in all subdivisions where
a public water supply is unavailable. Fire wells shall be installed
where groundwater is within 15 feet of the proposed center-line elevation
of the road and shall be spaced a maximum of 1,000 feet apart.
O.
Concrete monuments. Monuments shall be of concrete of 3,500 pounds,
30 inches in length, four inches square at the top, six inches square
at the bottom with a minimum of four three-eighths-inch reinforcing
rods, 28 inches long running the length of the monument. The top shall
be beveled 1/2 inch with a twelve-penny galvanized nail in the center
protruding 1/4 inch.
