5. A crawler hoe having a 3-cy bucket and whose cost per hour, including the wages to an operator, is $86, will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 25 ft. Determine the cost per bank cubic yard for each condition. Condition (1) (2) (3) (4) Material Sandy clay Hard clay Rock, well blasted Sand and gravel Depth of excavation (ft) Angle of swing (degrees) 10 60 88 18 15 20 90 90 00 150 Percent swell Efficiency factor (min-hr) 45 50 24 20 50 50 55 35 13

5. A crawler hoe having a 3-cy bucket and whose cost per hour, including the wages to an operator, is $86, will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 25 ft. Determine the cost per bank cubic yard for each condition. Condition (1) (2) (3) (4) Material Sandy clay Hard clay Rock, well blasted Sand and gravel Depth of excavation (ft) Angle of swing (degrees) 10 60 88 18 15 20 90 90 00 150 Percent swell Efficiency factor (min-hr) 45 50 24 20 50 50 55 35 13

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter12: Pile Foundations

Section: Chapter Questions

Problem 12.13P: A concrete pile 16 in. 16 in. in cross section is shown in Figure P12.13. Calculate the ultimate...

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11.2 A crawler hoe with a 3-cy bucket and a cost per hour, including the wages to an operator, of $86 will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 25 ft. Determine the cost per bank cubic yard for each of the stated conditions. Condition Material Depth of excavation (ft) Angle of swing (degrees) Percent swell Efficiency factor (min-hr) (1) Sandy clay 10 60 20 45 (2) Hard clay 18 90 50 (3) Rock, well blasted 15 90 50 (4) Sand and gravel 20 150 13 55
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A crawler hoe having a 3 1/2 cy bucket and whose cost per hour, including the wages to an operator, is $130 will excavate and load haul units under each of the stated conditions. The maximum digging depth of the machine is 26 ft. Determine the cost per bank cubic yard for each condition. (1) Rock, well blasted Condition (2) Sand and Material gravel 15 Depth of excavation (f) Angle of swing (degrees) Percent swell 14 90 120 15% Efficiency factor (min per hr) 40 45 $0.916/bcy 50.451/bcy 50.954/bcy $0.417/bcy 50.897/bcy $0.394/bcy 50.988/bcy O 50 378/bcy
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