A shovel having a 6-cy bucket whose cost per hour, including the wages to an operator, is $85 will excavate well-blasted rock with a swell percent of 60%, and load trucks under the stated condition below. The maximum digging height of the machine is 30 ft. Determine the cost per bank cubic yard. Use the average fill factor for well-blasted rock and assume the optimum height of cut for this material is 50% of the maximum digging height. Condition Height of excavation (ft) Angle of swing (degrees) Efficiency factor (min per hr) 24 75 40 Cycle Time 9 sec Load Swing loaded Dump Swing empty 6 sec 4 sec 5.sec

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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A shovel having a 6-cy bucket whose cost per hour, including the wages to an operator, is $85 will
excavate well-blasted rock with a swell percent of 60%, and load trucks under the stated condition
below. The maximum digging height of the machine is 30 ft. Determine the cost per bank cubic
yard. Use the average fill factor for well-blasted rock and assume the optimum height of cut for this
material is 50% of the maximum digging height.
Condition
Height of excavation (ft)
Angle of swing (degrees)
Efficiency factor (min per hr)
Edit View Insert Format Tools Table
24
75
40
Cycle Time
9 sec
6 sec
4 sec
Load
Swing loaded
Dump
Swing empty
5.sec
Transcribed Image Text:A shovel having a 6-cy bucket whose cost per hour, including the wages to an operator, is $85 will excavate well-blasted rock with a swell percent of 60%, and load trucks under the stated condition below. The maximum digging height of the machine is 30 ft. Determine the cost per bank cubic yard. Use the average fill factor for well-blasted rock and assume the optimum height of cut for this material is 50% of the maximum digging height. Condition Height of excavation (ft) Angle of swing (degrees) Efficiency factor (min per hr) Edit View Insert Format Tools Table 24 75 40 Cycle Time 9 sec 6 sec 4 sec Load Swing loaded Dump Swing empty 5.sec
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