Step 5 Balanced number trucks = 34.8 min 4.8 min = 7.25; round down to 7 trucks. Step 6 Truck production 9.5 cy/cycle 34.8 min/cycle 50 min 13.7 cy/hr. hour Step 7 Production 6 trucks: 13.7 cy/hr × 6 trucks = 82.2 cy/hr 7 trucks: 13.7 cy/hr x 7 trucks = 95.9 cy/hr 8 trucks: 13.7 cy/hr × 8 trucks = 109.6 cy/hr, loader controls at 107 cy/hr 9 trucks: 13.7 cy/hr x 9 trucks = 123.3 cy/hr, loader controls at 107 cy/hr A balance curve is developed to illustrate how the number of trucks affects production. 160 140 cy/hr 120 Loader production 100 80 80 60 60 40 40 20 20 Truck production Balance point 2 4 6 Trucks 8 10 12

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Related questions
Question

Sketch the balance curve for a truck-hauling operation with two excavators operating in tandem at 175 (cy)/(hr) each and trucks operating at 42 (cy)/(hr) each.

Make sure to indicate the balanced number of trucks (similar to the picture).

Step 5 Balanced number trucks =
34.8 min
4.8 min
= 7.25; round down to 7 trucks.
Step 6
Truck production
9.5 cy/cycle
34.8 min/cycle
50 min
13.7 cy/hr.
hour
Step 7 Production
6 trucks: 13.7 cy/hr × 6 trucks = 82.2 cy/hr
7 trucks: 13.7 cy/hr x 7 trucks = 95.9 cy/hr
8 trucks: 13.7 cy/hr × 8 trucks = 109.6 cy/hr, loader controls at 107 cy/hr
9 trucks: 13.7 cy/hr x 9 trucks = 123.3 cy/hr, loader controls at 107 cy/hr
A balance curve is developed to illustrate how the number of trucks affects production.
160
140
cy/hr
120
Loader production
100
80
80
60
60
40
40
20
20
Truck production
Balance
point
2
4
6
Trucks
8
10
12
Transcribed Image Text:Step 5 Balanced number trucks = 34.8 min 4.8 min = 7.25; round down to 7 trucks. Step 6 Truck production 9.5 cy/cycle 34.8 min/cycle 50 min 13.7 cy/hr. hour Step 7 Production 6 trucks: 13.7 cy/hr × 6 trucks = 82.2 cy/hr 7 trucks: 13.7 cy/hr x 7 trucks = 95.9 cy/hr 8 trucks: 13.7 cy/hr × 8 trucks = 109.6 cy/hr, loader controls at 107 cy/hr 9 trucks: 13.7 cy/hr x 9 trucks = 123.3 cy/hr, loader controls at 107 cy/hr A balance curve is developed to illustrate how the number of trucks affects production. 160 140 cy/hr 120 Loader production 100 80 80 60 60 40 40 20 20 Truck production Balance point 2 4 6 Trucks 8 10 12
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