1) Calculate the time required to grade and finish 30 km of road formation of 9.0 m width for two-lane road with motor grader having width of 3.0 m, using six passes with speed for each of the successive two passes as 5 kmph, 7 kmph and 9 kmph respectively. Assume machine efficiency based on operator skill, machine characteristics and working conditions as 80%. 2) Calculate number of transit mixers (TM) required for transporting concrete from central batching plant to site. The cycle time data of a 6 m³ typical transit mixers is given below: Loading time of TM = 6.0 minutes. Travel time of loaded TM to site = 30 minutes Average waiting time at site = 5.0 minutes Discharge time of concrete at site through concrete pump 15 Travel time for return trip = 24 minutes minutes. If the central batching plant having average output of 60 m³/hr is to run continuously, work out the requirement of no. of concrete pumps and TM.
1) Calculate the time required to grade and finish 30 km of road formation of 9.0 m width for two-lane road with motor grader having width of 3.0 m, using six passes with speed for each of the successive two passes as 5 kmph, 7 kmph and 9 kmph respectively. Assume machine efficiency based on operator skill, machine characteristics and working conditions as 80%. 2) Calculate number of transit mixers (TM) required for transporting concrete from central batching plant to site. The cycle time data of a 6 m³ typical transit mixers is given below: Loading time of TM = 6.0 minutes. Travel time of loaded TM to site = 30 minutes Average waiting time at site = 5.0 minutes Discharge time of concrete at site through concrete pump 15 Travel time for return trip = 24 minutes minutes. If the central batching plant having average output of 60 m³/hr is to run continuously, work out the requirement of no. of concrete pumps and TM.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
![1) Calculate the time required to
grade and finish 30 km of road
formation of 9.0 m width for two-lane
road with motor grader having width
of 3.0 m, using six passes with speed
for each of the successive two
passes as 5 kmph, 7 kmph and 9
kmph respectively. Assume machine
efficiency based on operator skill,
machine characteristics and working
conditions as 80%.
2) Calculate number of transit mixers
(TM) required for transporting
concrete from central batching plant
to site. The cycle time data of a 6 m³
typical transit mixers is given below:
Loading time of TM = 6.0 minutes.
Travel time of loaded TM to site = 30 minutes
Average waiting time at site = 5.0 minutes
Discharge time of concrete at site through
concrete pump 15
Travel time for return trip = 24 minutes minutes.
If the central batching plant having average
output of 60 m³/hr is to run continuously, work
out the requirement of no. of concrete pumps
and TM.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd19a2b43-7448-486b-913a-209619f9a7bc%2F597b796b-07e4-48fe-80c3-e2732c01df7b%2Fs10e0ts_processed.jpeg&w=3840&q=75)
Transcribed Image Text:1) Calculate the time required to
grade and finish 30 km of road
formation of 9.0 m width for two-lane
road with motor grader having width
of 3.0 m, using six passes with speed
for each of the successive two
passes as 5 kmph, 7 kmph and 9
kmph respectively. Assume machine
efficiency based on operator skill,
machine characteristics and working
conditions as 80%.
2) Calculate number of transit mixers
(TM) required for transporting
concrete from central batching plant
to site. The cycle time data of a 6 m³
typical transit mixers is given below:
Loading time of TM = 6.0 minutes.
Travel time of loaded TM to site = 30 minutes
Average waiting time at site = 5.0 minutes
Discharge time of concrete at site through
concrete pump 15
Travel time for return trip = 24 minutes minutes.
If the central batching plant having average
output of 60 m³/hr is to run continuously, work
out the requirement of no. of concrete pumps
and TM.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Structural Analysis](https://compass-isbn-assets.s3.amazonaws.com/isbn_cover_images/9781337630931/9781337630931_smallCoverImage.jpg)
![Structural Analysis (10th Edition)](https://www.bartleby.com/isbn_cover_images/9780134610672/9780134610672_smallCoverImage.gif)
Structural Analysis (10th Edition)
Civil Engineering
ISBN:
9780134610672
Author:
Russell C. Hibbeler
Publisher:
PEARSON
![Principles of Foundation Engineering (MindTap Cou…](https://www.bartleby.com/isbn_cover_images/9781337705028/9781337705028_smallCoverImage.gif)
Principles of Foundation Engineering (MindTap Cou…
Civil Engineering
ISBN:
9781337705028
Author:
Braja M. Das, Nagaratnam Sivakugan
Publisher:
Cengage Learning
![Fundamentals of Structural Analysis](https://www.bartleby.com/isbn_cover_images/9780073398006/9780073398006_smallCoverImage.gif)
Fundamentals of Structural Analysis
Civil Engineering
ISBN:
9780073398006
Author:
Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning
Publisher:
McGraw-Hill Education
![Sustainable Energy](https://www.bartleby.com/isbn_cover_images/9781337551663/9781337551663_smallCoverImage.gif)
![Traffic and Highway Engineering](https://www.bartleby.com/isbn_cover_images/9781305156241/9781305156241_smallCoverImage.jpg)
Traffic and Highway Engineering
Civil Engineering
ISBN:
9781305156241
Author:
Garber, Nicholas J.
Publisher:
Cengage Learning