[HISTORY: Adopted by the Wilton Town Meeting 3-7-1961, after adoption
by the Planning Commission 2-15-1961, effective 3-2-1961. Amendments noted where applicable.]
All streets shall be laid out and staked by
a licensed engineer or surveyor and shall be certified by him as to
correctness of line and grade, of completed drainage and subgrade
of road.
After the gravel road base has been completed,
shoulders graded, monument set and guard rails, if required, installed,
then an "As Built" plan and profile showing all improvements shall
be submitted and only after this "As Built" plan has been approved
by the Town Engineer and Planning Commission shall the final surfacing
of the road by applied subject to the conditions hereinafter specified.
Line and grade stakes shall be spaced not more
than 50 feet apart and shall be set and maintained in good order during
construction and until the "As Built'' map has been submitted and
accepted.
After all underground piping and drainage and
other underground structures and facilities have been installed, the
subgrade of a street shall be shaped to proper grade and cross section
at the required depth below finished grade. Fill under streets shall
be of material acceptable to the Town Engineer and be free from loam,
tree cuttings, stumps or frozen dirt and shall be thoroughly compacted.
Soft areas shall be excavated, drained and filled with gravel or selected
fill.
After the subgrade has been shaped and checked
for proper elevation and cross section by the contractor's engineer
and inspected by the Town Engineer, a gravel base, 12 inches deep
after compaction, shall be constructed of selected bank-run gravel,
which shall be well graded from maximum four inch coarse to sand consisting
of sound, durable aggregate, free from thin shale, clay, loam or vegetable
matter.
The gravel shall be placed and graded to proper
grade and cross section and, when thoroughly compacted, shall be the
thickness called for in the Town Standard Details.[1] Rolling shall be done with a roller weighing not less
than 10 tons.
The Town Engineer shall be given 48 hours' notice
before any gravel is placed.
[1]
Editor's Note: See § 10 of this
appendix.
All new roads shall be black-topped with asphaltic
concrete. Prior to the application of this final surfacing the gravel
base shall have been in place one year and the subgrade shall have
had an opportunity to demonstrate its adequacy to the satisfaction
of the Town Engineer. Any areas that show excessive settlement shall
have the gravel base removed and the subgrade soft spots excavated
and backfilled with gravel. Also if additional drainage is required
to alleviate wet conditions which caused the settlement, such drainage
shall be installed.
Streets with asphaltic concrete surfaces shall
be paved with dense graded hot bituminous concrete of mix proportions
and in accordance with construction procedures as specified in Connecticut
State Highway Form 808, Section 4.03, "Hot Asphaltic Concrete," and
Section 4.06, "Dense Graded Bituminous Concrete Pavement."
Asphaltic concrete surface shall be at least
two inches thick after rolling with a 10 ton roller and shall be true
in section and profile with maximum depression of 1/4 inch when tested
with a 10 foot long straight edge.
The Board of Selectmen may permit oiled and
sanded surfacing of roads, under certain conditions, such as repairs
or extensions to existing oiled surfaced roads or when it is deemed
in the best interests of the Town of Wilton. The oiled surfacing specifications
shall be determined by the Board of Selectmen.
The Town Engineer shall have 48 hours' notice
before paving operation begins. The street shall not be open to traffic
for 48 hours after paving.
Where called for on plans, asphalt curbs and
gutters shall be constructed of dense-mix asphaltic concrete of fine
aggregate for curbs, in accordance with standard sections as shown
on Town Standard Drawings.[1] Curbs and gutters shall be laid true to section and line
and on true grades.
[1]
Editor's Note: See § 10 of this
appendix.
Where called for on plans, concrete curbs shall
be constructed of 3,000 pounds per square inch concrete of section
shown on Town Standard Details.[1] Slump shall not exceed four inches and concrete shall
be thoroughly vibrated. Exposed faces shall be rubbed.
Forms for concrete curbs shall be set true to
line and grade and properly and thoroughly braced. In hot drying weather,
concrete shall be kept covered and moist for seven days.
Through expansion joints shall be provided,
on 10 foot centers, of 1/4 inch premoulded bitumastic expansion-joint
material.
The contractor shall notify the Town Engineer
48 hours in advance of placing concrete and no concrete shall be placed
until the forms have been inspected and approved and unless the Town
Engineer or his representative is present. The Town Engineer has the
right to request test cylinders to be made and the concrete tested
to insure compliance with concrete specifications.
No concrete shall be placed in freezing weather
unless proper precautions are taken and then only with the approval
of the Town Engineer.
[1]
Editor's Note: See § 10 of this
appendix.
Street shoulders shall be constructed according
to Town Standard Details[1] and, except where gravel is called for, disturbed areas
shall be covered with a minimum of four inches of topsoil, and a stand
of grass to the full width of the right-of-way, and as far beyond
as the disturbed areas extend. No stumps shall be buried in shoulders,
except that if existing trees have to be cut down, their stumps may
be left in place when cut off and removed to a level 12 inches below
finished grade. Healthy trees that do not obstruct the drainage or
create a traffic hazard are not to be removed.
[1]
Editor's Note: See § 10 of this
appendix.
Manholes, catch basins and headwalls shall be
built in accordance with Town standards and placed according to location
and elevations on approved plans. Where structures of special design,
such as retaining walls, bridges or box culverts are required, they
shall be designed by a licensed engineer and shall be submitted to
the Town Engineer fin approval. No structure shall be backfilled until
inspected and approved by the Town Engineer.
A.
Sewers and drains shall be laid true to line and grade
and shall be certified by a licensed engineer or surveyor that they
are in accordance with approved plans and drawings.
B.
Pipe in streets shall be reinforced concrete pipe,
State Highway Standard weight, unless heavier weight is required under
major streets. Pipe shall be laid on firm ground free of frost and
shall be firmly bedded. No rock over 12 inches in diameter shall be
backfilled over pipe. Fill over pipe shall be thoroughly compacted
to avoid future settlement.
C.
Subgrade drains, where required, shall be installed
in accordance with Town standards and shall be properly located and
graded to accomplish their function.
D.
No pipes shall be backfilled until inspected by the
Town Engineer or his representative.
[Amended 10-16-1973]
Town Standard Detail Drawings dated October
1, 1973, are a part of this ordinance. Prints may be obtained in the
Department of Public Works.
