General. All roads must have a traveled portion with a width of at
least 30 feet and a right-of-way of at least 50 feet. No roads shall
have grades greater than 10%. Materials used in preparation of the
subgrade base course, stone course and finished surface shall be as
specified.
Subgrade. All loam, trees, stumps and roots shall be removed from
the fifty-foot right-of-way. Traveled portions of the roadway shall
be excavated to at least 17 inches below the proposed finished grade
of the pavement. All trees, stumps, roots and boulders shall be removed
from the site.
Preparation of subgrade. All soft spots shall be compacted with a
power roller weighing not less than 10 tons. If the base cakes up
and moves under the roller, the spongy, soft area must be removed
and replaced with a suitable material and rerolled until it compacts
firmly without movement under the roller. The base shall be shaped
to conform to the finished grade of the roadway.
All roads shall be properly drained and sufficient culverts and catch
basins installed, except that, at the crest of a grade, no portion
of any road shall drain in one direction a distance of more than 250
feet without catch basins on both sides of the road.
Culverts shall be of sufficient size to handle a normal maximum amount
of water from the area drained. All drainage pipe shall be reinforced
concrete and at least 15 inches in diameter, with a minimum of three
feet of cover, except as directed by the City Engineer.
Where the contours of lots adjacent to the road are above the road
and where subsurface drains exist and where concentrated water from
driveways exists, creating icy surfaces on the roadway, the installation
of storm drains across the entire area is required, voiding the two-hundred-fifty-foot
exception.
Drainage rights through lots shall be at least 20 feet wide, and
all drainage to at least 200 feet away from the road shall be piped
and covered. Headwalls of concrete, fieldstone or rubble masonry at
the ends of pipe shall be three feet below the flow line and a minimum
distance of three feet on all sides of the pipe in a vertical plane.
Highway posts or guardrails shall be installed where necessary.
All sanitary sewers, storm sewers, water and gas mains must be installed
prior to spreading the gravel course on the roadway. This includes
sanitary sewer, water and gas main laterals which must be installed
to at least three feet inside of the property line on each lot.
It is the responsibility of the developer to notify the Director
of Public Works that the subgrade is ready for a check of elevations.
These elevations must be checked before gravel may be spread.
The gravel shall be spread in a course of such depth that, after
rolling has been completed, it shall be not less than six inches in
depth when compacted.
The gravel shall be wetted, if necessary, and rolled with a power
roller weighing not less than 10 tons, and wetting and rolling shall
be continued until the gravel is thoroughly compacted and the surface
conforming to the grade of the roadway.
The developer shall notify the Director of Public Works that the
gravel course is completed and ready for inspection. No stone may
be spread until this stage of construction has been approved by the
Director of Public Works or his authorized agent.
One and one-half inches of crushed stone shall be applied, and the
same shall be rolled to a thickness of four inches with a power roller
weighing no less than 10 tons.
A filler shall be applied consisting of stone dust or a sharp clean
sand in sufficient amounts to fill the voids in the course stone,
and the same shall be thoroughly wetted, rolled and swept until voids
are completely filled.
The developer shall notify the Director of Public Works that the
stone course is completed and ready for inspection. No bituminous
concrete material may be applied until this stage of construction
has been approved by the Director of Public Works or his authorized
agent.
Three inches of bituminous concrete shall be applied to the stone
base. Said bituminous concrete may be applied in two courses, each
1 1/2 inches in depth.
Bituminous concrete shall be in accordance with the current Connecticut
State Highway Department's 152-C surface course, Gr. II, Section 4.02,
Form No. 809, Standard Specification, State of Connecticut Highway
Department.
Monuments. Reinforced concrete monuments six inches square and three
feet deep with a cross in the top shall be furnished and set at all
street intersections, all angles, curves and all other critical points
in street lines. The monuments are to be set in after the road construction
has been completed.
Slopes. All slopes shall have a pitch of 4:1 where the dropoff is
four feet or less. Slopes with drops greater than four feet may be
sloped on a pitch of 2:1 with sufficient guardrail protection.
Soft and yielding materials from walk and driveway areas that exist
within the confines of the legal lines of the street right-of-way
shall be removed.
Sidewalk area to eight inches below the finished grade shall be excavated
and backfilled with four inches of gravel base, and four inches of
monolithic two-thousand-five-hundred-pound concrete shall be placed
on the same. Ten inches below the finished grade for driveways shall
be excavated and backfilled with four inches of gravel base, and six
inches of monolithic three-thousand-pound concrete shall be placed
on the same.
Gravel base. A minimum of four inches of compacted bank-run gravel
on area, wetted if necessary, and rolled with a power roller weighing
not less than five tons shall be provided.
Finishing. The surface is to be finished with wood trowel marked
into five-foot sections, edged with a one-fourth-inch radius edging
tool, and expansion joints shall be every 30 feet.
Excavation. Any existing sidewalk or driveway shall be removed to
the required depth below finished grade. All softyielding material
shall be removed and replaced with suitable material.
Gravel bases of six-inch depth, after compaction, shall be placed
between wooden forms on line and grade, allowing two inches for the
placing of bituminous concrete.
A bituminous concrete surface shall be a hot mix using Type II Standard
Specification No. 809, State Highway Department, Article 4.02.03.
It shall be rolled with a roller weighing not less than 500 pounds.
Permits shall be required for the installation of all sidewalks.
The permits will be issued by the Director of Public Works. There
shall be no fee for this permit.