The purpose of this chapter is to give the specifications for
the materials utilized in the construction of public improvements.
Shall conform to the KYTC Standard Specifications, current edition.
Shall conform to KYTC Standard Specifications current edition.
Shall conform to KYTC Standard Specifications, current edition.
Circular reinforced concrete pipe shall conform to the requirements
of AASHTO M-170, Classes I through V. Reinforced concrete elliptical
pipe shall conform to the requirements of AASHTO M-207.
Corrugated metal culvert pipe and pipe arches may be used for
the construction of culverts. All corrugated metal pipe shall be fully
bituminous coated. Pipe shall be fabricated in full compliance with
the requirements of AASHTO M-36. Coupling bands shall not be less
than 12 inches wide for metal pipe having diameters of 54 inches or
less.
Double wall HDPE pipe, with smooth flow interior, manufactured
specifically for use as storm sewer pipe may be used for storm sewer
construction. This pipe shall be sized based on a Manning Number of
no less than 0.012, shall be designed to have a minimum of two foot
cover, shall be backfilled in accordance with the manufacturer's recommendations,
and shall meet ASTM standards for storm sewer construction. At the
discretion of the Engineer, the developer shall submit manufacturer's
information to prove that a specified HDPE storm sewer pipe meets
these minimum requirements. Pipe fittings shall meet the same specifications
as the pipe.
Steel casing pipe for highway or railroad crossings shall be
bored or jacked in place, or where allowed may be laid in a properly
excavated trench. All joints between lengths shall be solidly welded
with a smooth non-obstructing joint inside. After the pipe has been
installed in the casing pipe, inspected and tested, both ends of the
casing pipe shall be sealed in a manner acceptable to the Engineer.
Any other pipes not covered above will be evaluated by the Engineer
on an individual basis to provide adequate drainage and structural
requirements.
