Suppose you want to use a hydraulic hoe and a fleet of trucks on an excavation project. If you calculate the hydraulic hoe's loading cycle time at 2.0 minutes and the truck cycle time at 25.0 minutes, what is the minimum number of trucks that you would need if you wanted the hydraulic hoe to control production? Group of answer choices 12 12.5 13 50

Suppose you want to use a hydraulic hoe and a fleet of trucks on an excavation project. If you calculate the hydraulic hoe's loading cycle time at 2.0 minutes and the truck cycle time at 25.0 minutes, what is the minimum number of trucks that you would need if you wanted the hydraulic hoe to control production? Group of answer choices 12 12.5 13 50

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Suppose you want to use one hydraulic hoe and a fleet of trucks on an excavation project. If you calculate the hydraulic hoe's loading cycle time at 2.5 minutes and the truck cycle time at 32.0 minutes, what is the minimum number of trucks that you would need if you wanted the hydraulic hoe to control production? Group of answer choices 80 12.8 13 29.5 12
Suppose you want to use one hydraulic hoe and a fleet of trucks on an excavation project. If you calculate the hydraulic hoe's loading cycle time at 2.5 minutes and the truck cycle time at 32.0 minutes, what is the minimum number of trucks that you would need if you wanted the hydraulic hoe to control production?
7. A hydraulic shovel will be used to excavate sandy clay and load it into a 12 BCY dump truck. The shovel production at 100% efficiency is estimated to be 300 BCY/hour and job efficiency is 0.80. Truck travel time is estimated to be 8.0 minutes and truck fixed cycle time (excluding loading) is estimated to be 2.0 minutes. Equipment costs for the shovel and trucks are $40/h (shovel) and $20/h (truck). A. How many trucks are theoretically required to obtain maximum production? B. What is the expected production of the system in banked measure using this number of trucks? C. What is the expected unit loading and hauling costs in $/BCY?
Given the following Mass-Haul Diagram: Mass Diagram 5000 4000 3,500 3000 2,100 6.0 2,100 7.0 2000 8.0 1,500 1,500 8.0 1000 -1,100 7.1 6.0 750 5.0 -1000 -2000 -3000 -3,000 -4000 -5000 10 15 20 25 Stations Limit of free haul = 600 ft Price of excavation = $3.50 Price of borrow = $3.75 Overhaul = $1.50 What is the limit of economic haul, in stations? Net Cumulative Yardage
In a truck and shovel operation, the time for a truck to position itself at the shovel and be loaded are 0.50 minute and 3 minutes respectively. It then takes the truck 10 minutes to haul the ore, dump it at the coarse ore bin, and return to the shovel. How many trucks do you need to keep the shovel busy with a little waiting time for the trucks?
Please show all work with units
Given the following Mass-Haul Diagram: Mass Diagram 5000 4000 3,500 3000 2,100 6.0 2,100 7.0 2000 8.0 1,500 1,500 a 8.0 1000 -1,100 7.1 6.0 750 5.0 -1000 3-2000 -3000 -3,000 -4000 -5000 10 15 20 25 Stations Limit of free haul = 600 ft Price of excavation = $3.50 Price of borrow = $3.75 Overhaul = $1.50 What is the total excavation cost to the nearest dollar? Net Cumulative Yardage
A project consists of replacing the track on an existing railroad line, involving 3,000 feet oftrack. The old track can be removed at a rate of 70 feet per hour. The old railroad ties can beremoved at a rate of 200 feet (measured along the track) per hour. The new ties can be installedat a rate of 25 feet per hour and the replacement track can be installed at a rate of 40 feet perhour. Show this operation on a linear schedule. Assume that the minimum float for an activity atany location is one day
A contractor plans to buy a backhoe machine for a construction project. The total useful hour of the machine is estimated to be 6 years with 9,000 hours of use. He estimates the unit cost to be $2.82/CY. If the backhoe has to excavate 2,000 CY of soil, what is the total cost for this operation? $5,640 $25,380 $54,000 $12,000
A contractor has a contract to construct a 12,000-ft-long tunnel in 30 months. He is trying to decide whether to do the job with his own forces or subcontract the job. He asks you to calculate the equivalent monthly cost of each alternative. His i = 1 percent per month. Production under both alternatives will be 300 ft per month. Alternative A Buy a tunneling machine and work with contractor's own forces. cost of tunneling and machine = $ 2,400,000 paid now salvage value of machine at EOM 30 = $ 540,000 cost of labor and materials = $ 250/ft for the first 10 months, increasing by 0.5%/month at EOM each month thereafter Alternative B Subcontract the work. Cost $500 per foot of advance of the tunnel heading, for the full 12,000 ft. %3D
A constructor has two subcontractors for his excavation work. Experience shows that in 60% of the time, subcontructor was available to do a job, whereas subcontractor B was available 80% of the time. Suppose Ea denotes the event that subcontractor A is available, ans Eb denotes that subcontractor B is available.a. Are Ea and Eb statistically independent? Explainb.Are Ea and Eb mutually exhaustive? Explainc.Are Ea and Eb collectively exhaustive? Explain
Determine the cost/ft for the following bit types which were used to drill the same type of formation in three wells. Which bit would you select for the next well? Assume bit cost = $10,000 and rig cost= 900 $/hr