Question

SITUATION 2: EFFECTIVE STRESS An engineer investigates a granular soil deposit, 4 meters thick, overlaying a...

SITUATION 2: EFFECTIVE STRESS

An engineer investigates a granular soil deposit, 4 meters thick, overlaying a 5 meter thick clay. The
water table is present between the interface of the granular soil and the clay. The moist unit weight
of the sand is 15.6 kN/m3

, while the clay has a saturated unit weight of 17.8 kN/m3

a.) What is the vertical effective stress at the bottom of the clay?

b.) If the water table rises to the level of the soil surface, what is the effective stress at the bottom
of the clay layer.

c.) If the same soil structure is below a river that is known to be 3 meters deep, what is the
effective at the bottom of the clay layer?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Calculate the total overburden stress, pore water pressure, and effective overburden stress at a depth of...
Calculate the total overburden stress, pore water pressure, and effective overburden stress at a depth of 12 feet for the given soil profile. A 2 ft sand layer with total unit weight of 107 pcf that is overlaying a 14 ft deep saturated clay layer with a total unit weight of 118 pcf, sitting on the bedrock. The groundwater table is 2 ft below the ground surface.
At a reclamation site, a 6-m thick sand layer overlies a 5.8-m thick clay layer, which...
At a reclamation site, a 6-m thick sand layer overlies a 5.8-m thick clay layer, which is underlain by impermeable rock stratum. The water level is initially 2.5 m above the ground surface. The saturated unit weights of sand and clay are 19 kN/m3 and 17 kN/m3, respectively. A 5-m thick layer of fill will be placed on the original ground surface, and the unit weights of fill are 19 kN/m3 and 20 kN/m3 above and below water table, respectively....
A layer of sand extends from ground level to a depth of 9 m and overlies...
A layer of sand extends from ground level to a depth of 9 m and overlies a layer of clay, of very low permeability, 6 m thick. The water table is 6 m below the surface of the sand. The saturated unit weight of the sand is 19 kN/m3 and that of the clay 20 kN/m3; the unit weight of the sand above the water table is 16 kN/m3. Over a short period of time the water table rises by...
A layer of soil consists of 3m thick of moderately dense sand having water content of...
A layer of soil consists of 3m thick of moderately dense sand having water content of 40% and specific gravity of 2.81 which in turn underlain by dense clay with water content of 56% and a specific gravity of 1.65. The groundwater table is at the ground surface. Sketch this scenario Obtain an expressive for determining the in-situ vertical stress at a point 5m below the ground surface. Determine the effective unit weight of each soil strata (NB: refer from...
b) A sample of moist soil has a mass of 18.18kg and occupies a total volume...
b) A sample of moist soil has a mass of 18.18kg and occupies a total volume of 0.009 m3. When dried in an oven, the dry mass is 16.13kg. The specific gravity of the soil solids is 2.70. (Acceleration of gravity, g = 9.81 m/sec2.) Determine: Wet density Dry unit weight Void ratio Water content Degree of saturation c) A 4.5 m deep deposit of silty sand lies above a 6 m deep deposit of gravel. The gravel is underlain...
The soil profile at the bottom of a 10-ft deep lake consists of 3 feet of...
The soil profile at the bottom of a 10-ft deep lake consists of 3 feet of high plasticity clay (γsat= 118 pcf) above 12 feet of silty sand (γsat= 124 pcf). Below the silty sand is a 20-ft-thick layer of poorly graded sand(γsat= 123 pcf). During a drought, the lake depth reduces to only 5 feet. Calculate the change in total stress, effective stress, and pore water pressure at the center of the SP layer due to drought conditions.
Determine the effective stress increase in the soil at a depth of 4 m below the...
Determine the effective stress increase in the soil at a depth of 4 m below the footing of area 3 x 5 m2 under an axial load of 4500 kN. Also determine the increase in the stress due to a drop of the water table from originally 1 m below the footing to 5 m below the footing bottom. Please help me with this question with graph and calculation details, thanks.
Q1. Complete the following table, provided for a sandy soil (Gs =2.65). Accordingly, find the dry...
Q1. Complete the following table, provided for a sandy soil (Gs =2.65). Accordingly, find the dry unit weigh of this soil. Mass (t) Vol. (m3) Air 13.46 Water 13.25 Solids 50.00 Total Q2. A soil specimen has a moisture content of 21%, a void ratio of 0.6, and a specific gravity of 2.7. Determine the bulk unit weight of this soil. Q3. If we are dealing with a very soft clay soil in the site, which field test equipment will...
2: Two meters of fill (=2.04 Mg/m3) are compacted over a large area of soil (thus...
2: Two meters of fill (=2.04 Mg/m3) are compacted over a large area of soil (thus 100% of its influence is felt throughout the depth). Above the compacted fill, a 3*3m spread footing loaded with 3000 kN is placed. Assume that the average density of the soil is 1.68 Mg/m3, and the water table is very deep. Then it is required to (a) compute and plot the profile of effective vertical stresses at the middles of ten 2m intervals or...
Using the data in Textbook Problem 8.8: a. Plot the vertical effective consolidation stress versus void...
Using the data in Textbook Problem 8.8: a. Plot the vertical effective consolidation stress versus void ratio on both arithmetic and semi-log graphs. For the arithmetic graph, constrain the vertical axes to 0.55 and 0.95; and the horizontal to 0 to 1,500 kPa; for the semi-log graph, use the same vertical axis constraints, but use 10 kPa and 10,000 kPa to ease interpretation. Plot the data points only, and draw in a smooth curve by hand. Plot each graph on...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT
Active Questions
  • Assume the following information regarding U.S. and European annualized interest rates: Currency                          &n
    asked 12 minutes ago
  • What is the basis of reliability for the following: 1)Dying declaration 2) business records 3)excited utterness...
    asked 12 minutes ago
  • P6-9 (L02,4) (Analysis of Business Problems) James Kirk is a financial executive with McDowell Enterprises. Although...
    asked 20 minutes ago
  • Written story about someone who engages in primary deviance and then becomes a secondary deviant. Make...
    asked 24 minutes ago
  • If you have an elastic sample that you want to analyze by TEMI Which sample preparation...
    asked 25 minutes ago
  • Philosophy: Compare and contrast Plato’s notion of form to that of Aristotle’s. How do their respective...
    asked 25 minutes ago
  • Metal Oxide Varistors MOV's are non-ohmic variable resistors used in surge protectors to stunt away excessive...
    asked 52 minutes ago
  • GreenTree Financing lent an engineering company $100,000 to retrofit an environmentally unfriendly building. The loan is...
    asked 1 hour ago
  • A piano tuner using a 264 Hz tuning fork hears 6beats per second while playing the...
    asked 1 hour ago
  • The electric field of a uniformly charged ring centered at the origin and laying on the...
    asked 1 hour ago
  • At a temperature of 252.4°C, the average velocity (meters / second) of a propane, C3H8, molecule...
    asked 1 hour ago
  • Ultrasound probes can resolve structural details with sizes approximately equal to the wavelength of the ultrasound...
    asked 2 hours ago