To estimate the amount of bitumen required for the
prime coat, multiply the area to be treated by the rate of
application. Under certain conditions, the estimate
should include sufficient bitumen for an additional
width of 1 foot on each side of the surface course to be
constructed on the primed base.
The formulas for a prime coat estimate are as follows:
For computing gallons:
For computing drums:
Tack Coat
A tack coat is a coating of asphalt on an existing paved
surface that provides a bond between the existing surface
and the new surface, The two essential properties of a tack
coat are as follows: (1) it must be very thin and (2) it must
uniformly cover the entire surface of the area When tack
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