The hole for temping asphalt trucks should be located where -
CORRECT ANSWER-Hole located in the middle third of length
of truck; 6-10 inches above the bed
Temping asphalt on the top - CORRECT ANSWER-At
engineer's discretion
Asphalt Temperature Master Range - CORRECT ANSWER-+-
30; reject loads outside
Temp every load monitored if - CORRECT ANSWER-Mix
within master range
Differes for a single load from established temp by +-25°F
Avg of five loads differes by +-15°F
Monitor until within tolerance
, 2|Page
Tack Distributor without a calibration chart - CORRECT
ANSWER-If they don't have a calibration chart you can not use
them to distribute tack
Application rate of tack for close graded mixes - CORRECT
ANSWER-Normal: 0.02-0.08 gal/yd^2
Must apply temperature correction factor
Calibration chart for distributor of tack - CORRECT ANSWER-
Must be done by a reliable and recognized firm
Chart provided to engineer prior to use
Know the temperature of asphalt cement being used for Tack
coat
Measuring tack levels - CORRECT ANSWER-Stick the
distributor before and after spraying tack
Use calibration chart for Distributor to determine amount of
asphalt in truck before and after spraying
Formula for finding the length of a tacked road - CORRECT
ANSWER-Find length of tacked road
Station - station = station lineal feet
or
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