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

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

Section: Chapter Questions

Problem 1P

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Concept explainers

Measuring site work, Excavation and Piling

Bid drawings typically include very little material about the precise requirements of site work operations, measuring site work and excavation work differs from measuring most other works on a construction project. The actual site work conditions are not provided and also the dimensions of the excavations are not known during the pre-construction phase. The precise measurement of the excavation and backfill of the earth material and topsoil is important for a contractor to decide upon the total cost required for the process. All the works should be carried out under OSHA (Occupational Safety and Health Administration) standards to ensure the safety of the workers.

Question

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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