Condition (1) (2) (3) Material Sandy Hard Rock, (4) Sand and clay clay well blasted gravel Depth of excavation (ft) 12 17 14 15 Angle of swing (degrees) 50 60 90 120 Percent swell 22 15 Efficiency factor (min per hr) 50 45 40 45
Condition (1) (2) (3) Material Sandy Hard Rock, (4) Sand and clay clay well blasted gravel Depth of excavation (ft) 12 17 14 15 Angle of swing (degrees) 50 60 90 120 Percent swell 22 15 Efficiency factor (min per hr) 50 45 40 45
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
A crawler hoe having a 3 -cy bucket and whose cost per hour, including the wages to an operator, is $150, will excavate and load trucks under each of the stated conditions. The maximum digging height of the machine is 26 ft. Determine the cost per cubic yard for each condition.

Transcribed Image Text:Condition
(1)
(2)
(3)
Material
Sandy Hard
Rock,
(4)
Sand and
clay
clay
well blasted
gravel
Depth of excavation (ft)
12
17
14
15
Angle of swing (degrees)
50
60
90
120
Percent swell
22
15
Efficiency factor (min per hr)
50
45
40
45
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