Design standards for and installation of monuments,
curbs, gutters, water mains, sanitary sewers, storm drains, street
and other paving, streetlights and other improvements, including trees,
if required by the Board, shall meet specifications established by
the Board and appropriate Village departments. Standard streets shall
have a minimum paved width of 24 feet between curbs.
Design standards for street constructed or altered
in connection with a subdivision shall meet the following requirements:
A.
All streets shall be named, which name shall be subject
to approval of the Board.
B.
Unless the Board determines that it is impractical,
street rights-of-way shall have a width of at least 50 feet.
C.
In all cases, the width of streets and their rights-of-way
shall be at least as great as that of existing streets of which they
are extensions.
D.
Subdivisions generally shall have at least two connections
to existing streets.
E.
Block lengths generally shall not exceed 1,200 feet.
F.
A cul-de-sac (dead-end street) will not be approved,
unless provision is made for the future elimination of the cul-de-sac
or unless it can be demonstrated to the satisfaction of the Board
that there is not another practical way to develop the property. When
a cul-de-sac is permitted, either temporary or permanent, an approved
turnaround shall be provided. Such turnaround roadway shall accommodate
a minimum turning radius of 40 feet to the outside curb and have a
minimum ten foot-wide strip of land surrounding such turnaround for
right-of-way purposes. Culs-de-sac generally shall not exceed 600
feet in length. The length of the cul-de-sac shall be measured from
the center line of the intersecting roadway to the center of the turnaround.
G.
Generally, street grades shall be not less than 1%
nor greater than 7% and adjoining grades shall be connected by suitable
vertical curves.
H.
For summit and sag curves, the design speed shall
not be less than 25 miles per hour, with a nonpassing sight distance
of 200 feet, pursuant to standard engineering practice.
[Amended 11-22-2022 by L.L. No. 8-2022]
[Amended 9-27-1994 by L.L. No. 11-1994]
In subdivisions with streets, the applicant
shall grade and pave all streets, including those needed to connect
the streets in the subdivision to existing improved streets, shall
construct or landscape public areas as required by the Board and shall
install monuments, curbs, water mains, sanitary sewers, storm drains,
street signs, streetlights and other improvements shown on the final
plat and/or on the construction plan, at the applicant's expense,
in accordance with standards, specifications and procedures acceptable
to the appropriate departments of the Village.
Before the Board grants final approval for any
subdivision that creates, enlarges or alters a street, the Village
Engineer shall inform the Board whether the applicant has complied
with design standards established in this Article, in the Code of
the Village of Scarsdale and by Village departmental regulations.
Surface water control systems shall be deemed
to include pipes, ditches, culverts, retention and detention areas,
structures, swales, slopes, conduits and other runoff control measures.
The design of surface water control systems shall meet the following
requirements:
A.
For sites of two acres or more, detention facilities
shall be adequate to provide for a one-hundred-year storm.
B.
Detention facilities for a one-hundred-year storm
shall also be designed for maximum discharge rates for storm intensities
of 50, 25, 10 and two years.
C.
For sites of less than two acres, detention facilities
shall be adequate to provide for a twenty-five-year storm, unless
the Board requires greater detention capacity because of surrounding
conditions.
D.
Detention facilities designed for a twenty-five-year
storm shall also be designed for maximum discharge rates for storm
intensities of 10, five and two years.
E.
All installations shall be in accordance with standards,
specifications and procedures acceptable to the appropriate Village
department.
