Current through Register Vol. 46, No. 39, September 25, 2024
Underground work shall be in accordance with the nationally
recognized standards, and as prescribed below. Regional offices may impose more
stringent conditions in a permit based upon prevalent weather and traffic
conditions.
(a) Installation.
(1) Pavement crossings for underground
utilities shall be accomplished by jacking, driving, drilling, boring, or
tunneling. "Open cut" installation will be approved by the department only upon
a clear demonstration of necessity or other conditions which warrant such a
procedure. Subsurface rock formations, excessive presence of boulders,
excessive and damaging skin friction during jacking operations or insufficient
rights-of-way limits to allow jacking, driving or tunneling may constitute a
necessity. Where an ongoing construction contract requires pavement removal
and/or construction of new pavement, the department may consider approving an
"open cut".
(2) The edge of the
excavation (nearest the pavement) used for driving or jacking shall not be less
than 10 feet, measured laterally from the curb, or edge of shoulder at shoulder
break, whichever provides more clearance. When the highway configuration or
other circumstances preclude the minimum offset, the department may consider
approving an alternate configuration and offset.
(b) Crossover carrier pipes.
(1) Crossover carrier pipes shall be designed
to withstand all applied and/or superimposed loadings resulting from the
roadway section, traffic, potential pipe settlements, and installation
procedures. Certain soil and/or site conditions may require encasement. Where a
cathodic system is designed to be installed for the crossover carrier pipe, the
design of any casing shall be so as not to diminish the desired level of
protection.
(2) Crossover carrier
pipe design shall be site specific, based on field investigation. The design
shall address all potential applied loads, installation methods, and loads
induced during installation. The preferred installation method when operating
below the water table or in soft ground shall employ an earth pressure balance
or comparable system in order to prevent flowing soil or ground loss and
pavement distress.
(3) Design of a
crossover carrier pipe section shall include consideration of, but not be
limited to the following:
(i) Increased pipe
wall thickness for the distance within the pavement plus possible additional
distance to allow for future highway widening.
(ii) Adequate wrapping, coating or other
treatment to protect against corrosion.
(iii) Protective jacket adequate to ensure
the integrity of the anti-corrosion material under installation and service
conditions.
(c) Longitudinal carrier pipes, including
utility service connections, shall be installed outside the area of live load
influence, unless there is no practical alternative.
(d) Temporary pavement repairs with cold
patch or other acceptable bituminous patching shall be placed as soon as
backfill is made. It shall be maintained flush with the pavement surface until
the backfill has been properly compacted, and permanent restoration of the
pavement surface completed.
(e)
Existing underground facilities shall be maintained and protected by and at the
expense of the permit applicant in compliance with Industrial Code Rule 53 (12
NYCRR Part 53).
(f) Sheeting. Where
excavation is within the pavement area or when the depth of excavation is
greater than the distance from the edge of pavement to the edge of trench,
sheeting may be required.
(g)
Backfill. Backfill material shall be of a quality and type acceptable to the
department and shall be compacted sufficiently to preclude future settlement of
the excavated area. The backfill material shall be of a quality so as not to
block or intercept the drainage of the subgrade. Excavations for service
connections shall be backfilled within two days.
(1) Within roadway. Within the roadbed limit
of a cut section or within the embankment section, the excavation shall be
backfilled using approved layer thicknesses of material acceptable to the
department, to the top of the subgrade. Material shall be compacted to an
acceptable density with approved equipment.
(2) Outside roadway. The backfill for
excavated areas shall be compacted to an approved density with acceptable
material and upper surface maintained level with the original surface. The
surface shall be treated, if required, in order to leave the surface in
essentially the same condition as it was prior to the excavation. All surplus
material and trash shall be removed and disposed of in a lawful and proper
manner. The work area shall not be left in an unsightly condition.
(3) Trenchless installations. All detrimental
voids created during the installation of a crossover pipe, regardless of
method, shall be filled. Appropriate backfill type and method of placement
shall be addressed in the design of the crossing.
(h) Pavement replacement.
(1) Temporary pavement restoration shall
consist of a minimum compacted thickness of three inches of asphalt concrete,
and approved base material of a depth to provide for permanent pavement. In
situations where heavy traffic loads are anticipated or cases where the
temporary pavement is required for a protracted period, more substantial
pavement and backfill design may be required. The asphalt concrete shall be
maintained flush with the existing pavement until permanent restoration of the
pavement.
(2) Permanent pavement
replacement will be specified in the permit.
(3) On reinforced concrete pavements, the
appropriate class of concrete shall be used. Undermined and broken slabs shall
be completely replaced. Approved joint dowels and sealer, transverse ties and
reinforcing steel shall be used as required.
(4) Asphalt concrete pavement shall be
replaced with adequately compacted base material, binder and top course
material which is at least equal in quality, mix type and thickness to the
pavement which was removed. Existing pavement should be saw-cut to provide a
clean butt joint between the old and new pavement. An emulsified asphalt tack
coat shall be applied to all existing pavement edges prior to placing the new
asphalt pavement courses.
(5)
Shoulders shall be replaced with material of like quality, thickness and type
as the existing shoulder.
(6)
Manhole frames, grates and similar appurtenances placed within the roadway
shall be approved by the department and shall be set in a workman-like manner
flush with the surface of the roadway.
(i) The department will not undertake or
accept financial responsibility for any remediation or similar activity with
respect to the removal of hazardous wastes (6 NYCRR Parts 373 and 374) and
non-hazardous solid industrial wastes (6 NYCRR Part 360) which under law would
not be required at the time but for the accommodation of utility facilities
within the right-of-way. Such responsibility and costs shall be solely those of
the utility.
