Step 1 Calculations 5 trucks: $135/hr + ($105/hr)(5 trucks) = $660/hr + 68.5 cy/hr = $9.64/cy 6 trucks: $135/hr + ($105/hr) (6 trucks) = $765/hr + 82.2 cy/hr = $9.31/cy 7 trucks: $135/hr + ($105/hr) (7 trucks) = $870/hr + 95.9 cy/hr = $9.07/cy 8 trucks: $135/hr + ($105/hr) (8 trucks) = $975/hr + 107 cy/hr = $9.11/cy 9 trucks: $135/hr + ($105/hr) (9 trucks) = $1,080/hr + 107 cy/hr = $10.09/cy Step 2 Plot the number of trucks against the unit production cost to visualize the impact $/cy 10.20 10.00 9.80 9.60 9.40 9.20 9.00 4 5 6 7 8 9 10 Trucks
Step 1 Calculations 5 trucks: $135/hr + ($105/hr)(5 trucks) = $660/hr + 68.5 cy/hr = $9.64/cy 6 trucks: $135/hr + ($105/hr) (6 trucks) = $765/hr + 82.2 cy/hr = $9.31/cy 7 trucks: $135/hr + ($105/hr) (7 trucks) = $870/hr + 95.9 cy/hr = $9.07/cy 8 trucks: $135/hr + ($105/hr) (8 trucks) = $975/hr + 107 cy/hr = $9.11/cy 9 trucks: $135/hr + ($105/hr) (9 trucks) = $1,080/hr + 107 cy/hr = $10.09/cy Step 2 Plot the number of trucks against the unit production cost to visualize the impact $/cy 10.20 10.00 9.80 9.60 9.40 9.20 9.00 4 5 6 7 8 9 10 Trucks
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
a truck-hauling operation with two excavators operating in tandem at 175 (cy)/(hr) each and trucks operating at 42 (cy)/(hr) each. sketch the "$/hr vs. number of trucks” curve (+- 2 truck) if each excavator operates at $(135)/(hr) and each truck operates at $(90)/(hr.) For example, if the balanced number of trucks is rounded to 6 trucks, develop data points and a curve for 4, 5, 6, 7, and 8 trucks. (similar to the picuture)
Transcribed Image Text:Step 1 Calculations
5 trucks: $135/hr + ($105/hr)(5 trucks) = $660/hr + 68.5 cy/hr = $9.64/cy
6 trucks: $135/hr + ($105/hr) (6 trucks) = $765/hr + 82.2 cy/hr = $9.31/cy
7 trucks: $135/hr + ($105/hr) (7 trucks) = $870/hr + 95.9 cy/hr = $9.07/cy
8 trucks: $135/hr + ($105/hr) (8 trucks) = $975/hr + 107 cy/hr = $9.11/cy
9 trucks: $135/hr + ($105/hr) (9 trucks) = $1,080/hr + 107 cy/hr = $10.09/cy
Step 2 Plot the number of trucks against the unit production cost to visualize the impact
$/cy
10.20
10.00
9.80
9.60
9.40
9.20
9.00
4
5
6
7
8
9
10
Trucks
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