Lesson 4/Learning Event 1
plant). The area under this line is the total hours of paving required from the plant to a point
dtotal miles from the plant. If we calculate the values for A, B, and d1 we can easily find this
area by geometry.
The inverse paving speed (A) between the plant and d1 is calculated using the following
equation:
A = Inverse paving speed in hours/mile
W = Width of the paving in feet
FCT = Thickness of the paving in inches
UW = Unit weight of the paving material in pounds/cubic foot
M = Maximum plant output in tons/hour
The constant .22 is for conversion of units.
The distance d1 is calculated using the following equation:
d1 = Distance in miles from the plant to where the inverse paving speed starts to
increase
N = Number of trucks available for hauling
S = Average travel speed of the trucks in miles/hour
D = Dump size of each truck in tons
M = Maximum plant output in tons/hour
The inverse paving speed (B) at the end of the project is calculated using the following equation:
B = Inverse paving speed at the end of the project in hours/mile
A = Inverse paving speed from the plant to d1
dl = Distance in miles from the plant to where the inverse paving speed starts to
increase
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