SD-06 Test Reports
Tests
Copies of test results, within 24 hours after completion of each
test.
1.6
SAFETY PRECAUTIONS
[No smoking, or open flames shall be permitted within 8 m 25 feetof
heating, distributing, or transferring operations of bituminous materials
other than bituminous emulsions.] [When tar is used, a full-face, organic,
vapor-type respirator and protective creams shall be used by personnel
exposed to fumes. Protective creams shall not substitute for cover
clothing.]
1.7
EQUIPMENT, TOOLS, AND MACHINES
Provide equipment dependable and adequate for the purpose intended and
properly maintained in satisfactory and safe operating condition at all
times. Discontinue the use of equipment which fails to produce
satisfactory work and replace with satisfactory equipment. Calibrated
equipment such as asphalt distributors, scales, batching equipment,
spreaders and similar equipment, shall have been recalibrated by an
approved calibration laboratory within [12] [_____] months prior to
commencing work [and every [_____] months thereafter, by such laboratory
from the date of recalibration, during the term of the contract].
1.7.1
Bituminous Distributors
The distributors shall have pneumatic tires of such width and number that
the load produced on the base surface does not exceed 11.6 kg per mm 650
pounds per inch of tire width. Distributors shall be designed and equipped
to distribute bituminous material uniformly at even heat on various widths
of surface at readily determined and controlled rates ranging from 0.20 to
9.1 L/square meter, 0.05 to 2.00 gallons per square yard, with a pressure
range of 172 to 517 kPa 25 to 75 psi. The allowable variation from any
specified rate shall not exceed 5 percent. Distributor equipment shall
include a separate power unit for the bitumen pump, full-circulation spray
bars, tachometer, pressure gauges, volume-measuring devices, a thermometer
for reading the temperature of tank contents, and a hose attachment
suitable for applying bituminous material to areas not accessible with
distributor spray bar. The distributor shall be equipped for circulation
and agitation of bituminous material during the heating process.
1.7.2
Single-Pass, Surface-Treatment Machines
The machines shall be capable of spraying bituminous material and spreading
aggregate in one pass. Bituminous spraying equipment shall conform to the
requirements given above for a bituminous distributor. The machine shall
be capable of spreading aggregates at controlled amounts per square yard as
specified. In addition, the single-pass, surface-treatment machine shall
be capable of placing a surface treatment adjacent to an existing surface
treatment, forming a joint of the same thickness and uniformity as other
portions of the surface treatment. Ridges or blank spaces will not be
permitted. Joints in the second application shall be formed at least 300
mm 1 foot from those formed in the first application.
SECTION 02745
Page 8
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