Logo
Home Study Material Contact Search
AI Chat FREE
  1. engineering
  2. civil engineering
  3. an earthwork contract requires to cut and move exc

An earthwork contract requires to cut and move excavated rocks. The site is a typical limestone...

Free

60.1K

Verified Solution

Question

Civil Engineering

An earthwork contract requires to cut and move excavated rocks.The site is a typical limestone rock formation in a cut section,which is 15,000 ft long, 85 ft wide, and 3 ft deep. Seismographictests indicate a seismic wave velocity of 5,000 fps for the rocklayer material. The contractor proposes to rip the rock with a370-hp crawler tractor. Answer the following questions.
What is the total duration of the rock cut project assuming 10hours per day work?

Answer & Explanation Solved by verified expert
4.2 Ratings (606 Votes)

Detailed solution is as follows,

Tractor Productivity

For the given seismic wave velocity,ie., 5,000 fps and using 370 hp tractor ,referring the tractor production chart,

Productivity =560 bcy/hr

Quantity of rock

Given Length =15000 ft

Width = 85 ft

depth =3 ft

Volume of rock = 15000 x 85 x 3

                       =3825000 cft

Total duration required to cut

Per day productivity =productivity per hour x no of hours worked in a day

                             =560 x 10

                             =5600 cft

No of days required to complete the work = total volume/productivity per day

                                                            =3825000/5600       

                                                            =683 days
Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:
  • Unlimited Question Access with detailed Answers
  • Zin AI - 3 Million Words
  • 10 Dall-E 3 Images
  • 20 Plot Generations
  • Conversation with Dialogue Memory
  • No Ads, Ever!
  • Access to Our Best AI Platform: Zin AI - Your personal assistant for all your inquiries!
Become a Member

Other questions asked by students

Q

Assuming DNA polymerization by each polymerase in the DNA Pol III holoenzyme proceeds at a rate...

Biology
Q

Whats the code to open a text file and every line in that text file that...

Programming
Q

Part A: A spherical wave with a wavelength of 4.0 m is emitted from the origin....

Physics
Q

A pendulum 2.20 m long is released (from rest) at an angle ?0=30.0?. (Figure 1) Part A Determine...

Physics
Q

Which statement is true of an e-distributor? a. An e-distributor offers services from different vendors in separate packages. b. An...

General Management
Q

A_________ forms when the electron cloud is shared unequally. This can cause themolecules to form________...

Biology
Q

a What is the tangential acceleration of a bug on the rim of a 13...

Physics
Q

A college offers a self paced course in algebra College officials are interested in the...

Statistics
Q

7 Determine if the following integral converges or diverges 8 5 1 1 0 1...

Calculus
Q

Choose all the expressions that are equivalent to 1 Select one or more 1 sin...

Algebra
Q

HELP Required information Exercise 9-19A Calculate the issue price of bonds (LO9-7) [The following...

Accounting
Q

A company uses cost-plus pricing and has a total cost of $160.00 per unit at...

Accounting