OO-R-2853
3.4 Materials. Materials used shall be free from defects which would
adversely affect the performance or maintainability of individual components or
of the overall assembly. Materials not specified herein shall be of the same
quality used for the intended purpose in commercial practice. Unless otherwise
specified herein, all equipment, material, and articles incorporated in the work
covered by this specification are to be new and fabricated using materials
produced from recovered materials to the maximum extent possible without
jeopardizing the intended use. The term "recovered materials" means materials
which have been collected or recovered from solid waste and reprocessed to
become a source of raw materials, as opposed to virgin raw materials. Unless
otherwise specified, none of the above shall be interpreted to mean that the use
of used or rebuilt products is allowed under this specification.
3.5 Interchangeability. All rollers of the same classification furnished
with similar options under a specific contract shall be identical to the extent
necessary to insure interchangeability of component parts, assemblies,
accessories, and spare parts.
3.6 Maintainability. The roller shall be designed so that components are
readily accessible for repair or replacement, with minimum removal or
disturbance of adjacent parts or components, using general purpose tools.
Operating parts, accessories, and drain outlets shall be readily accessible for
regular maintenance service.
3.7 Safety. All reciprocating, rotating, or moving parts of equipment shall
be guarded when such parts are exposed to contact by personnel or otherwise
might create a hazard, including exhaust pipes and other lines which may be
subject to high temperatures. Fuel tanks shall be located in a manner which
will not allow spills or overflows to run onto the engine, exhaust, or
electrical equipment. Exhaust or discharges from equipment shall be directed so
that they do not endanger personnel or obstruct the view of the operator. All
points requiring lubrication during operation shall have fittings located or
guarded so as to be accessible without hazardous exposure to personnel
performing these operations. Nonfunctional sharp edges, projecting points, and
excessive length of fastening devices shall be avoided. When noise level in the
area of the operator's location exceeds 85 decibels (dB), the manufacturer shall
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install a warning decal or plate that reads: "CAUTION - HEARING PROTECTION
REQUIRED", or similar statement. Exterior noise shall not exceed 88 dB. The
roller shall be furnished with a backup alarm which operates automatically when
traveling in the reverse direction. The alarm may be of the limited duration
design as commonly used on compaction equipment.
3.8 Performance. When the roller is furnished with a tamping foot drum (see
3.12), it shall be capable of compacting fine and coarse grained soils as
classified in accordance with ASTM D 2487 to a density of 90 percent modified
proctor as determined in accordance with ASTM D 1557. When the roller is
furnished with a smooth drum (see 3.12), it shall be capable of compacting hot
or cold mixed asphaltic concrete, of not less than 3 inches (75 millimeters
(mm)) ħl/2-inch (12 mm) loose depth, to a smooth compacted surface in not more
than five passes. The roller shall withstand the strain imposed upon it without
any damage or deformation when operated at maximum speeds and functions as
specified herein.
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