powered, handheld type, using rotary drilling mode only.
Impact and rotary
impact type drills are prohibited.
1.6.4
Finishing and Texturing
Hand tools used for placing, finishing and texturing concrete and mortar
shall be commercially available and commonly used in concrete construction
and repair. Equipment used for finishing and texturing concrete and mortar
surfaces shall be a type commonly used in the concrete construction and
repair industry for that application. Surface grinders, impact tools, and
other equipment shall conform to the requirements specified herein, except
as specifically required by the type of finish and texture, and subject to
approval.
1.6.5
Compressed Air Supplies
Compressed air shall provide clean, oil and moisture free compressed air at
the surface to be cleaned. The compressed air line shall have at least two
in-line air filters to remove oil and moisture from the air supply. The
compressed air supply shall be tested during each shift for the presence of
oil and moisture.
1.6.6
Mixing, Transporting, and Placing
Equipment used for mixing, transporting, placing, and confining concrete
and mortar placements shall be suitable for the intended purpose and be
capable of satisfactorily mixing material, and supporting placement
operations in an uninterrupted manner. Equipment shall be maintained in a
clean, good operable condition at all times. Equipment used in the work
shall be subject to approval. Defects, and deficiencies in operation or
capacity shall be resolved prior to use in the work. Equipment used for
batching, mixing, conveying, and placing of materials shall be clean, free
of old materials and contaminants, and shall conform to the material
manufacturer's recommendations.
1.6.7
Associated Equipment
Associated equipment such as mixer timing equipment, valves, pressure
gauges, pressure hoses, other hardware, and tools shall be provided as
required to ensure a continuous supply of material and operation control.
Mechanical or radio communication systems shall be used between elements of
mortar production and placement operation which are more than 30 m 100 feet
apart.
1.7
SAMPLING AND LABORATORY TESTING OF MATERIALS
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NOTE: Guidance for preparation of criteria to be
used in inspection of laboratory facilities is
contained in ASTM E 548.
**************************************************************************
Sampling and testing shall be performed by an approved independent
commercial testing laboratory, or by the Contractor subject to approval.
Should the Contractor elect to establish testing facilities, no work
requiring testing shall be permitted until the Contractor's facilities have
been inspected and approved. All sampling and testing shall be the
Contractor's responsibility.
SECTION 03900
Page 12
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