User Account

All Pages

Calculate the number of cycles per loader

Assignment Help Civil Engineering
Reference no: EM132158443

1. A truck for which the information in. Figure applies operates over a haul road with a +4% slope and a rolling resistance of 90 lb/ton. If the gross vehicle weight is 70,000 lb. determine the truck's maximum speed.

2. A project to move packed earth requires you to decide whether to use a dozerlscraper operation or excavator/truck operation. Determine the most economical operation based on the dcpzeriscraper operation estimated at $1.25/cy. All equipment carries a rated heaped capacity, has a fill factor of 100%, and works 45-min hours. Excavator costs $95/hr (including operator), cycle time is 0.28 min, and bucket heaped capacity is 5.0 cy. Truck costs $150/hr (including operator), dump time is 0.5 min (maneuver, dump, turn), heaped capacity is 31.7 cy, and 12 trucks are available for the project. Hauling equipment operates in one direction from A to B to C and finally to D.

Section

Load

Length (ft)

Speed (mph)

A

full

3,000

9

13

full

2,500

17

C

empty

3,000

36

D

empty

3,000

16

3. An earthmoving project has available one loader with a 6-cy heaped capacity bucket and a larger loader with a 7-cy heaped capacity bucket for filling 45.9-cy heaped capacity off-road trucks. All equipment operates at 50-min hours. Loaders produce a bucket fill factor of 90%, and truck fill factor is 100%. Loaders do not "short load." Loader cycle time is 0.6 min for both loaders (no travel). Truck dump time is 0.5 min (includes maneuvering, dumping, and turning).

The loaded trucks climb uphill through the following three sections and return empty downhill through the same sections. Trucks operate at rated loaded and empty weights.

Section

Load

Length (ft)

Speed loaded
(mph)

Speed empty
(mph)

1

full

2,000

10

42

2

full

500

7

42

3

empty

1,000

8

42

Calculate the number of cycles per loader to fill each truck. Calculate the number of trucks required for each loader.

Based on the number of trucks you determine, develop a curve for the $/cy production cost vs. trucks curve for a range of -1-2 trucks. Use the following hourly rates (including operator) for each piece of equipment:

6-cy capacity loader $120/hr 7-cy capacity loader $125/hr 45.9-cy off-mad truck $130/hr

Verified Expert

The assignment is about three questions which are regarding with the truck operations. For the first question the performance curve is used. And for the other two problems the design procedure is used for the calculations

Reference no: EM132158443

Questions Cloud

Research about the windows network security : Research the Internet to obtain information on Windows network security.Review the critical considerations to prepare a procedure guide.
What factors will influence the decision : Search "scholar.google.com" or your textbook. Discuss the technical skills required to have a CSIRT response team consisting of employees with other job duties.
Identify the proper phase in the pdca cycle : Identify the proper phase in the PDCA cycle for each security administration task discussed in the lab.
Establish a sample hardware asset list : You are part of a disaster recovery team charged with completing the asset inventory at a small business that primarily sells a small selection of products.
Calculate the number of cycles per loader : Calculate the number of cycles per loader to fill each truck and Calculate the number of trucks required for each loader
Describe the different types of operating systems : Find articles that describes the different types of operating systems (Linux, Unix, Android, ROS, z/OS, z/VM, z/VSE, etc). Do not select MS WINDOWS.
Describe how the two work together : Put yourself in the shoes of an IT Security Analyst that needs to describe the differences of a BCP and DR plan to a group of managers.
Define a work breakdown structure : As the project manager for an IT department, you have been assigned to manage the project of deploying a new VoIP phone system to the company's campus.
How often should servers be backed up : What is installed when you choose the RSAT-DFS-MGMT-Con feature? What are the different types of data backup that are performed?

Reviews

Write a Review

Civil Engineering Questions & Answers

  Determine which should be the tangent function

in the first couple steps you are using the sine function to derive that the interior triange BCG is a right triangle. However, the sine function, by definition, is opposite divided by hypotenuse.

  Which compressor should he buy and why

A diver is planning to salvage a Spanish galleon located in 200 feet of water. He plans to use a diving suit that will be supplied with air from a hose (assume this to be amply sized) connected to a compressor that he will locate in his boat on the s..

  Estimate the average time headway of this traffic stream

An observer has determined that the time headways between successive vehicles on a section of highway are exponentially distributed and that 60% of the headways between vehicles are 15 seconds or greater.

  The initial and after-consolidation void ratio of the sample

A saturated sample of soil, 38mm in diameter and 75mm high, hasbeen prepared for a triaxial test. Total mass of the sample was measured as 144.6grams, and the initial moisture content determined at 25.2%. The Specific Gravity of thesolids was estimat..

  Determine what is the braking efficiency on a road

A car is traveling up a 3% grade on a road that has good, wet pavement. The engine is running at 2500 rpm. The radius of the wheels is 15 inches, the driveline slipage is 3% and the overall gear reduction ratio is 2.5 to 1

  Determine the power developed by the force

determine the power developed by the force when t = 5s. Hint: First determine the time needed for the force to cause motion.

  Compare the total reactor volume required for removal

Compare the total reactor volume required for 90% removal of a substance that decays according to first-order kinetics with a rate constant of 0.05 day -1 in a CM system that contains a single reactor against a system that contains three CM reacto..

  Find the required minimum area for the heat transfer neglect

Saturated liquid water at 1000 kPa flows at 2 kg/s inside a 10 cm outer diameter steel pipe and outside of the pipe is a flow of hot gases at 1000 K with a convection coefficient of h = 150 W/m2 K

  What error results from curvature and refraction

A small plot of land has measured dimesnions of 50 by 150 ft. the incertianity in the 50-ft is +/- 0.01 ft. Calculate the uncertianity eith which the 150-ft must be measred to ensure that the total uncertainty is not greater than 150%.

  Determine the load p if the total elongation of the system

A 0.25 in diameter copper rod BC is securely attached between two identical 1 in diameter steel rods (AB and CD). Find the load P if the total elongation of the system is measured to be 0.0312 in. Esteel= 29,000ksi, Ecopper=17,000ksi.

  Find the slope of line ab expressed as a percentage

Two readings ie 1.64m and 0.73m were taken during leveling procedure to define the slope of a centerline of a bridge at points A and B. If distance AB=50 m, find the slope of line AB, expressed as a percentage

  Determine the criteria/sub-criteria weights

Determine the criteria/sub-criteria weights using the following methods (use your own judgments).

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

Submit Assignment

Academics

Major Subjects

Majors

Get In Touch

whatsapp: +1-415-670-9521

Phone: +1-415-670-9521

Email: [email protected]

TERMS & POLICIES

HELP & SUPPORT

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd