Any person, firm or corporation desiring to
lay out and construct any proposed new street, highway or public way
in the Town of Brookfield shall first submit a plan of the proposed
facility to the Planning Commission for its approval as prescribed
by Chapter 126 of the General Statutes of the State of Connecticut.
This plan shall conform to the standards set forth in the Subdivision
Regulations of the Town of Brookfield as to form and content.
Roads shall meet the following design criteria:
B. Right-of-way. The minimum width of the right-of-way
shall be as follows:
C. Pavement width. The minimum width of the paved surface
as measured from face of curb to face of curb shall be as follows:
D. Curve radius.
(1) The minimum radius of all horizontal curves at the
center line shall be as follows:
(2) Curve radii shall be based on design speeds as set
forth by the State of Connecticut Geometric Design Standards.
E. Gradient. The minimum gradient of all streets shall
be 0.5%. The maximum gradient shall be as follows:
F. Cul-de-sac.
(1) Where culs-de-sac are permitted, the following minimum
radius for right-of-way shall be used:
(c)
Collector: not permitted.
(2) Dead-end streets with culs-de-sac shall not exceed
1,500 feet in length unless an alternate means of access for emergency
vehicles is provided which is acceptable to the Planning Commission.
The Planning Commission may waive the requirement for an alternate
means of access for emergency vehicles if the Commission finds that
such alternate means of access is not required for public safety.
[Amended 12-19-1977]
(3) Where an alternate means of access for emergency vehicles
is required, the Planning Commission shall determine the standards
of construction and impose such conditions as it finds necessary to
insure adequate and proper maintenance of said emergency accessway.
The Planning Commission may require that the applicant post a permanent
maintenance bond in an amount satisfactory to said Commission to insure
adequate and proper maintenance of said accessway.
[Added 12-19-1977]
(4) The diameter for the paved portion of the cul-de-sac
shall be as follows:
(c)
Collector: not permitted.
G. Curbs. Bituminous concrete curbing shall be installed
on all roads where finished center-line grades exceed 5% and are required
by the Board of Selectmen or Town Engineer.
H. Vertical curves. 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. Using the basic
formula of L equals KA where A equals the algebraic sum of grades,
the following K factor shall be used:
(4) Residential: K equals 25.
I. Cross slope of pavement. The transverse slope of all
paved sections shall be at the minimum rate of 3/8 inch per foot as
shown on the standard detail.
J. Driveway entrances. Where driveways have been constructed
prior to the petition for acceptance, said driveways shall conform
to the standard detail as to configuration. Driveway entrances shall
be paved with bituminous concrete into the right-of-way line. In all
cases the gutter line of the roadway shall be maintained in a true
line and grade.
K. Street signs. Street signs shall be required at all
intersections. To ensure uniformity the developer shall pay to the
municipality a sum to be determined by the Board of Selectmen per
required sign and his responsibility under this provision shall end
upon payment of this sum.
L. Mailboxes. When homes within a subdivision are occupied
prior to acceptance of the street, it shall be the responsibility
of the developer to erect mailboxes where said street intersects the
nearest public highway. The mailboxes shall be erected as directed
by the Postmaster, and they shall be maintained in good order until
the street is accepted as a public highway. The developer shall remove
same when postal service is supplied to the individual home.
Storm drainage shall be provided and designed
in accordance with the following standards:
A. Pipe. Sufficient pipe shall be installed within the
subdivision to carry existing watercourses and to drain the proposed
roads and/or easements which may reasonably be expected to be constructed
at some future date on adjoining property which normally drains across
the area of the proposed subdivision or which, in the opinion of the
Board of Selectmen or Town Engineer, would be the most practical course
for such drainage. Cross-lot drainage shall be piped to at least 30
feet behind proposed buildings and/or leaching systems. If in his
judgment there will be no substantial danger from soil erosion or
danger to the public health and safety, the Board of Selectmen or
Town Engineer may permit the discharge of rivers and large streams
in their natural courses and may permit the discharge of stormwater
and established watercourses in open ditches across proposed lots
of one acre or larger. All pipe shall be of such diameter, not less
than 15 inches, as will, in the judgment of the Board of Selectmen
or Town Engineer, be sufficient to properly carry stormwater expected
to enter the pipe from the proposed subdivision and from other properties
when developed which normally drain across the area of the proposed
subdivision. The minimum slope for fifteen-inch pipe shall be 0.75%.
The intent of this subsection is that pipes shall be installed the
full length in all proposed roads to permit the connection of house
storm drains and cellar drains where required by ground conditions.
B. Manholes. Manholes shall be provided at each change
in direction or grade of the pipe and shall not be spaced more than
300 feet apart. Manholes shall be constructed as shown on the standard
detail. Only precast concrete units or solid concrete blocks shall
be used.
C. Catch basins.
(1) Catch basins shall be provided in order that surface
water will not travel without interception more than as shown in the
following schedule of grades and distances:
(a)
Fifty-hundredths percent to 1.00%: 250 linear
feet.
(b)
One and zero hundredths percent to 5.00%: 300
linear feet.
(c)
Five and zero hundredths percent to 10.00%:
250 linear feet.
(2) Each basin shall be connected to a manhole or adjacent
catch basin where no manhole exists. Construction shall conform to
the standard detail. Only precast concrete units or solid concrete
blocks shall be used.
D. Underdrains.
(1) In all roadway areas where a high water table is found
to exist, either before commencing or during actual construction of
the roadways, the developer shall be required to install underdrains
as directed by the Board of Selectmen or Town Engineer or his duly
authorized agent, to protect the stability of the roadway.
(2) If required, perforated concrete or metal pipe shall
be used, backfilled with washed gravel or crushed rock 1/2 inch nominal
size to a depth of at least 12 inches over the top of the pipe. The
remainder of the trench shall be backfilled with bankrun gravel as
approved by the Board of Selectmen or Town Engineer.
(3) Sufficient pitch shall be provided to allow this underground
water to run freely to a point of discharge. The size and type of
conduit shall be as directed by the Engineer.
E. Discharge. The discharge of all stormwater shall be
into suitable drainage structures or watercourses. Where the discharge
shall be onto private property within or adjoining the proposed subdivision,
property easements and discharge rights for the Board of Selectmen
or Town Engineer shall be secured by the applicant before approval
of the final map and acceptance of the drainage plan is requested
by the developer.
The storm drainage system shall be constructed
in accordance with the following standards and procedures:
A. Pipe. All pipe used shall be of reinforced concrete
meeting State Highway Department specifications. In some instances
the Engineer may recommend use of corrugated metal pipe where he feels
such pipe will provide a more satisfactory drainage system.
B. Joints. The joints of all pipe shall be shoved tight.
Pipe laid in sandy, silty or other soil where, in the judgment of
the Engineer, there is the possibility of silting shall have joints
thoroughly sealed with 1:3 portland cement mortar or other approved
method.
C. Catch basins and manholes. Catch basins and manholes
shall be constructed in accordance with the approved plans. Manholes
shall be constructed of solid concrete radial manhole blocks eight
inches thick or of precast concrete units. Catch basins shall be constructed
of eight-inch solid concrete blocks or precast concrete units.
D. Headwall, culverts and bridges. Headwalls, culverts
and bridges shall be constructed where required, in accordance with
good engineering practice and as specified by the Engineer.
E. Open ditches. Open ditches may be permitted at the
discretion of the Engineer. The size of the waterway shall be of sufficient
size to convey all water expected to be discharged and shall be suitably
stabilized against erosion. The side banks shall be moderately sloped,
not less than three horizontal to one vertical and then seeded or
otherwise stabilized paved bottom sections and rip-rap slopes shall
be provided when directed by the Engineer to prevent scour and erosion.
When, in the opinion of the Engineer, a guard
railing is necessary to protect the traveling public, the subdivider
shall install same as directed. The guard railing shall consist of
the two-cable variety and shall conform to the applicable State Highway
Department specification.
Prior to the placement of the base course, all
utilities are to be installed together with service extensions to
each lot within the property line. The intent of this section is to
provide all required underground services to each lot prior to the
placement of base course and finished pavement.
[Added 6-26-1975]
The Board of Selectmen shall approve the names
of new streets and have the authority to change the name of any street
where confusion exists in similar sounding names or street-numbering
sequences. For the purpose of this section, streets shall be defined
to include any road, highway, avenue, lane or right-of-way providing
access to more than one structure and/or living unit.