[Ord. -/-/1985, -/-/1985, App. I, § 1-1]
One of the most important phases of engineering construction
work is adequate inspections to determine that the material and methods
of construction on a project meet the Township standards. Without
such inspections, the Township cannot be assured that public improvements
are constructed in accordance with these standards. Therefore, all
of this work must be carefully scheduled with the Township Engineer
and complete compliance with the appropriate specifications at all
steps of the operation are necessary for ultimate acceptance by the
Township.
[Ord. -/-/1985, -/-/1985, App. 1, § 1-2]
No material or equipment shall be used on any public improvement
project under these specifications until specifically approved by
the Township Engineer or qualified Township Inspector. All rejected
material or equipment shall be immediately removed from the site at
the contractor's expense. If it is necessary to conduct material tests
or to submit the equipment or materials to experts for analysis or
approval, cost of such tests shall be borne by the contractor.
[Ord. -/-/1985, -/-/1985, App. I, § 1-3; as amended
by Ord. 2004-O-26, 12/1/2004, §§ II, III]
1.
All materials entering into the construction of streets and the methods of construction and drainage shall be in accordance with the applicable requirements of the Pennsylvania Department of Transportation Applicable Specifications Form 408-83. Cross-sections shall be as detailed in Drawing D-1 of this Part 10.
A.
Grading. Roadways shall be graded for the full width of the right-of-way.
Beyond the limits of this grading, banks shall be sloped to prevent
erosion but this slope shall not be steeper than four horizontal to
one vertical with tops of slope in cuts rounded. Such slopes shall
be suitably planted or sodded with perennial grasses or other vegetation
to prevent gullying and erosion.
B.
Subgrade.
(1)
The area within the limits of the proposed road surface shall
be shaped to conform to the line, grade and cross-section of the proposed
final center line.
(2)
All unsuitable subgrade materials shall be removed or stabilized.
(3)
Wet or swampy areas shall be drained and stabilized.
(4)
Fills shall be made with suitable materials and thoroughly compacted
for full width in uniform layers of not more than eight inches thick.
There shall be no topsoil used in fill areas.
(5)
The subgrade shall be finally compacted by rolling with a three-wheel
ten-ton roller or a sheepsfoot or rubber-tired vehicle as approved
by the Township Engineer.
(6)
Backfill of trenches within the cartway and curb area shall
be mechanically tamped in uniform layers of not more than eight inches,
thoroughly compacted, 95% dry volume, prior to application of the
base course.
C.
Base Course.
(1)
Prior to the placing of course aggregate, a six-inch sub-base
shall be spread over the entire subgrade.
(2)
No material shall be placed on a wet or frozen subgrade.
(3)
Base course shall be crushed aggregate base course, ten-inch
depth, thoroughly compacted to a depth of not less than that specified
in Drawing D-1 of this Part 10.
(4)
Coarse aggregate shall be spread uniformly on the prepared bed
and thoroughly compacted with a three-wheel, ten-ton roller. Rolling
shall continue until the material does not creep or wave ahead of
the roller wheels.
(5)
Coarse aggregate shall be choked with fines and compacted in
accordance with PennDOT specifications.
D.
Bituminous Surface.
(1)
Bituminous material ID-2, hot mix, with a two-inch binder course
and a one inch wearing course shall be used.
(2)
The completed road surface shall have a uniform slope of 1/4
inch per foot from edge to center line., except that on super elevated
curves, this slope shall not be less than 1/4 inch per foot and shall
extend up from the inside edge to the outside edge of the paving.
E.
Alternate Street Construction. As an alternative, to subsections (C)(3) and (D)(1) of this § 1003, the road may be constructed of a bituminous concrete base course five inches depth and a wearing course ID-2, 1 1/2 inch depth, as per Drawing D-1 in this Part 10.
F.
Placement of Wearing Surface. No wearing surface shall be placed
on any street ultimately to be dedicated to the Township until at
least 50% of the dwelling units are completed along the street to
be so dedicated.
G.
Curb Gutter Construction Specifications.
(1)
Where curb gutters are provided, the ground shall be graded
to a slope toward the curb of 1/4 inch to the foot to the right-of-way
line and either seeded or sodded to such standards as shall be prescribed
by the Board.
(2)
Curb gutter shapes and sizes shall be approved by the Township Engineer. (See Drawing D-1 of this Part 10.) Complete details of proposed curbs shall be included in subdivision plans including physical dimensions and a concrete specification. All curb gutters shall be constructed of 4,000 p.s.i. concrete in accordance with either the applicable requirements of PennDOT specifications, Form 408-2003 (or the latest revision thereof) or Part 10, § 1003(I)(1) of this chapter, whichever is more stringent.
H.
Paved Shoulder. Where shoulders are to be provided, their construction
shall conform to the requirements of PennDOT Form 408-83, "Paved Shoulders,
Type 3." The width and slope shall conform to the standards and design
criteria of PennDOT for the appropriate class of road.
I.
Sidewalk and Path Construction Specifications.
(1)
Where required, sidewalks shall be constructed of 4,000 p.s.i.
concrete with a minimum width of four feet and thickness of four inches
on a compacted bed of slag or crushed stone four inches in depth,
except at driveway crossings, when the sidewalk thickness shall be
increased to a six-inch depth as specified in Drawing D-1 of this
Part 10. The proposed design mixes for the concrete must be submitted
to the Township Engineer for approval, and shall adhere to the following
criteria:
(a)
Maximum water; cement ratio equals 0.45.
(b)
No slag or fly ash.
(c)
Three-inch maximum slump (plus or minus one inch).
(d)
Five percent to 7% air entrainment.
(e)
Application of liquid cure and seal compound with 30% minimum
solids content applied immediately after finishing operations are
completed and the water sheen has disappeared.
(2)
Where paths are to be provided, particularly as suggested under
PRD in the Zoning Ordinance, they shall have a minimum right-of-way,
cleared of growth of six feet and a reasonably level walking way of
four feet free from large rock, roots and debris, and be reasonably
compact. A layer of tan bark, fine gravel or other permanent material
shall be provided to permit continuous use in all weather.
