C.
3.02
3.03
A
shall see that all sleeves or forms are at the work and properly set in ample time to
prevent delays. He shall see that all such chases, openings, and sleeves are located
accurately and are of proper size and shape and shall consult with the Engineer and the
contractors and subcontractors concerned in reference to this work.
In case of his failure to leave or cut all such openings or have all such sleeves provided
and set in proper time, Contractor shall cut them or set them afterwards at his own
expense, but in so doing he shall confine the cutting to the smallest extent possible
consistent with the work to be done. In no case shall piers or structural members be cut
without the written consent of the Engineer.
The Contractor shall not cut or alter the work of any subcontractor or any other contractor,
nor permit any of his subcontractors to cut or alter the work of any other contractor or
subcontractor, except with the written consent of the contractor or subcontractor whose
work is to be cut or altered or with the written consent of the Engineer. All cutting and
patching or repairing made necessary by the negligence, carelessness, or incompetence of
the Contractor or any of his subcontractors shall be done by or at the expense of the
Contractor and shall be the responsibility of the Contractor.
All cutting and coring shall be performed in such a manner as to limit the extent of
patching.
All holes cut through concrete and masonry walls, slabs or arches shall be core drilled
unless otherwise approved. No structural members shall be cut without the approval of
the Engineer and all such cutting shall be done in a manner directed by him. No holes
may be drilled in beams or other structural members without obtaining prior approval.
All work shall be performed by mechanics skilled in this type of work.
CORING:
Coring shall be performed with an approved non-impact rotary tool with diamond core
drills. Size of holes shall be suitable for pipe, conduit, sleeves, equipment or mechanical
seals to be installed.
If holes are cored through floor slabs they shall be drilled from below.
All equipment shall conform to OSHA standards and specifications pertaining to plugs,
noise and fume pollution, wiring and maintenance.
Provide protection for existing equipment, utilities and critical areas against water or
other damage caused by drilling operation.
Slurry or tailings resulting from coring operations shall be vacuumed or otherwise
removed from the area following drilling.
CUTTING:
Cutting shall be performed with a concrete wall saw and diamond saw blades of proper
2022 Sewer Replacement Project Cutting, Coring and Patching
Nashua, NH 01735-2
