A-A-50546
Tool chest. Tool chest shall be designed to contain the paving breaker, repair
parts, tools, accessories, and operating tools.
Set I - Set I shall consist of a 25-lb (11.5 kg) pneumatic type paving
breakar and the following items:
Set II - Set II shall consist of an 80-lb (36 kg) pneumatic type paving
breaker and the following items:
Examination. Each breaker set shall be examined for compliance with the
requirements of this document.
Performance. The 25-lb (11.5 kg) breaker, with the air consumption at 105
pound-force per square inch (psi) (724 kPa) and shall have a blow force of not
less than 9 foot-pounds (12.20 newton meters) per blow under vertical operating
conditions with no extra force applied on top of the breaker. The no load
piston speed shall be 1800 blows per minute. The breaker shall break a 2-inch
(51 mm) or thicker slab of portland cement concrete.
The 80-lb (36 kg) breaker shall operate at 105 psi (724 kPa) and break a 5-inch
(127 mm) thick slab of portland cement concrete, having a compressive strength
of not less than 3,200 psi (22 063 kPa). No load piston speed shall be 1200
blows per minute.
The 25-lb (11.5 kg) or 80-lb (36 kg) breaker shall neither malfunction nor show
signs of wear or scoring, and shall have an absence of oil vapor in exhaust air
when tested.
Consolidation. The tool chest shall be used for the consolidation of all
components of the breaker set.
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