A 4-yard dragline is being used to excavate a canal in wet. sticky clay. The average swing angle is 75 degrees, the average depth of cut is 11 ft. and job efficiency is 44 minutes per hour. If the dragline, must excavate 1.578 BCY of material, how long

A 4-yard dragline is being used to excavate a canal in wet. sticky clay. The average swing angle is 75 degrees, the average depth of cut is 11 ft. and job efficiency is 44 minutes per hour. If the dragline, must excavate 1.578 BCY of material, how long

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter15: Retaining Walls, Braced Cuts, And Sheet Pile Walls

Section: Chapter Questions

Problem 15.22P

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Engineering Economics Principles

Engineering economics (engineering economy) is a sub-field of economics to study the use and application of the economic principles in the engineering analysis of decisions along with the systematic evaluation of the advantages of project costs inclusive of engineering design and analysis. It emphasizes microeconomics (a subset of economics) for researching the behavior of people in the decision-making process of assigning and determining multiple alternatives to the usage of some of the restrained resources and merging economic theory and engineering practice in a practical manner. It depicts the logical framework of economics in addition to the analytical application of statistics and mathematics.

Question

A 4-yard dragline is being used to excavate
a canal in wet. sticky clay. The average
swing angle is 75 degrees, the average
depth of cut is 11 ft. and job efficiency is 44
minutes per hour. If the dragline, must
excavate 1.578 BCY of material, how long
will it take to complete the job HRS)?

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