Exam (elaborations)
ERRONEOUS QUESTIONS AND ANSWERS IN HYDRAULICS AND GEOTECHNICAL ENGINEERING
- Course
- Institution
ERRONEOUS QUESTIONS AND ANSWERS IN HYDRAULICS AND GEOTECHNICAL ENGINEERING...
[Show more]
Seller
Follow
luzlinkuz
Reviews received
Content preview
ERRONEOUS QUESTIONS AND ANSWERS IN HYDRAULICSAND GEOTECHNICAL ENGINEERING
a. 0.8 m/day
b. 20,000 m^3/day
c. 3750 days
A confined aquifer is recharged by a continuous supply of water
from a certain source. The average thickness of the aquifer was
determined to be 25 m and the average width is 4 km. The
hydraulic conductivity (coefficient of permeability) of the aquifer
was obtained at 50 m day and its porosity is 0.25. The piezometric
heads on two wells 1 km apart are 65 m and 60 m from a common
reference datum. For the given data obtained...
a. Evaluate the seepage velocity in meters per day
*Error (K=40 m/day)
50 m per day
b. the rate of flow through the aquifer in cu. m. per day
*Error (K=40 m/day)
50 m per day
c. Evaluate the time travel, in days, from the head of the aquifer to
point 4 km downstream.
*Error (K=40 m/day)
*Error (L=3 km)
50 m per day
a. 286.3 kPa
b. 299 kPa
, c. 234 kPa
A square footing 2 m on a side is founded 1.2 m below the ground
surface for which the bulk unit weight of soil is 20 kN/m3, the
cohesion strength is 10 kPa and the angle of internal friction is 15
degrees. Under the condition of general shear failure, evaluate the
soil bearing capacity in kPa. Use Terzaghi's bearing capacity
factors.
Nc=12.86
Nq=4.45
Ny=1.52
*(Bulk unit weight is used since no Sat unit weight given)
a. If the ground water table is at the bottom of the footing.
b. If the ground water table is more than 2 m below the bottom of
the footing.
c. If the ground water table rises to the ground surface.
a. 26.88
b. 243
c. 0
A sample of soil 50 mm in diameter was tested in direct shear. A
normal force P was first applied to the sample and a direct shear
force V was applied. The following combinations of P and V
caused the specimen to exhibit failure.
a. Estimate the nearest value of angle of internal friction of the
soil, in degrees.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for CA$19.43. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
73918 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now