Evaluate cost and production using a 3-cy hoe to load wet gravel into 14-cy-size trucks. Assume a bucket fill factor of 105% and that the hoe bucket swing cycle time is 24 sec. Use the information in table below, a truck net empty weight of 36,860 lb, and a rated payload of 40,000 lb. Dump time will be 1.3 min. The haul distance is 2.5 miles from the pit to the plant up a 3% grade. The rolling resistance of the haul road will be maintained at 3%. The hoe and operator cost $97 per hour, and trucks cost $49 per hour. Assume the efficiency is 60min/hr. What is the truck cycle time? What is the loader cycle time? What is the number of trucks? What is the production of the truck, if you know that the loader will control that production? What is the total cost in dollars $ and in ($/lcy)? Total resistance% Speed(mph) 0 35 2 35 4 22.5 6 12.5 8 7
Evaluate cost and production using a 3-cy hoe to load wet gravel into 14-cy-size trucks. Assume a bucket fill factor of 105% and that the hoe bucket swing cycle time is 24 sec. Use the information in table below, a truck net empty weight of 36,860 lb, and a rated payload of 40,000 lb. Dump time will be 1.3 min. The haul distance is 2.5 miles from the pit to the plant up a 3% grade. The rolling resistance of the haul road will be maintained at 3%. The hoe and operator cost $97 per hour, and trucks cost $49 per hour. Assume the efficiency is 60min/hr. What is the truck cycle time? What is the loader cycle time? What is the number of trucks? What is the production of the truck, if you know that the loader will control that production? What is the total cost in dollars $ and in ($/lcy)? Total resistance% Speed(mph) 0 35 2 35 4 22.5 6 12.5 8 7
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
Evaluate cost and production using a 3-cy hoe to load wet gravel into 14-cy-size trucks. Assume a bucket fill factor of 105% and that the hoe bucket swing cycle time is 24 sec. Use the information in table below, a truck net empty weight of 36,860 lb, and a rated payload of 40,000 lb. Dump time will be 1.3 min. The haul distance is 2.5 miles from the pit to the plant up a 3% grade. The rolling resistance of the haul road will be maintained at 3%. The hoe and operator cost $97 per hour, and trucks cost $49 per hour. Assume the efficiency is 60min/hr.
- What is the truck cycle time?
- What is the loader cycle time?
- What is the number of trucks?
- What is the production of the truck, if you know that the loader will control that production?
- What is the total cost in dollars $ and in ($/lcy)?
|
Total resistance% |
Speed(mph) |
|
0 |
35 |
|
2 |
35 |
|
4 |
22.5 |
|
6 |
12.5 |
|
8 |
7 |
Expert Solution
Trending now
This is a popular solution!
Step by step
Solved in 10 steps with 19 images
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Recommended textbooks for you
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning