B.E. (Civil Engineering) Eighth Semester (C.B.S.)

Elective - III : Advanced Geotechnical Engineering TKN/KS/16/7627

P. Pages :2 *0688*

Time : Three Hours Max. Marks : 80 _____________________________________________________________________

5.

6.

7.

.in

Explain parameters of expansive soil.

a)

OR What is swelling pressure? what is its significance?

b)

How would you identify an expansive soils from its Index properties.

6

a)

What are the effects of grain morphology?

6

b)

Explain stress-strain behavior of soil.

7

a)

OR What are effects of size, shape of sand on engineering properties of soil.

6

b)

Explain in brief grain morphology?

a)

Explain 'Electro-osmosis method' of ground water table.

6

b)

7

a)

What is the purpose of Drainage and Dewatering in soil. OR With the help of neat sketch explain 'well point system'.

b)

In seepage Analysis explain the case of flow to a slot from line sources.

6

a)

Explain secondary consolidation phenomenon and estimate secondary consolidation settlement.

7

b)

Write a short note on ' schmertmann's method for determination of preconsolidation pressure field consolidation curve. OR

7

pe

pa

6

ar

ik sh a

7

.p

4.

b)

7

w

3.

What is an Expansive soil and where it is found in India?

7

w

2.

a)

w

1.

All questions carry marks as indicated. Solve Question 1 OR Questions No.2. Solve Question 3 OR Questions No.4. Solve Question 5 OR Questions No.6. Solve Question 7 OR Questions No.8. Solve Question 9 OR Questions No.10. Solve Question 11 OR Questions No.12. Due credit will be given to neatness and adequate dimensions. Assume suitable data whenever necessary. Illustrate your answers whenever necessary with the help of neat sketches. Use of non programmable calculator is permitted.

rs

Notes : 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.

TKN/KS/16/7627

1

7

P.T.O

8.

9.

a)

An undisturbed sample of clay, 24mm in thickness, is tested in a consolidometer. The total change in the thickness of the specimen in 4.74mm when the applied pressure is 200 kN/m2 and 6.13 mm when the applied pressure is 400 kN/m2. On reducing the pressure to zero the specimen swells to a thickness of 18.50 mm. The final water content of the specimen is 32.6% and specific gravity is 2.72. The day statum, 1m thick, is sandwiched between pervious strata, and is subjected to an overburden pressure of 200 kN/m2. Estimate the probable settlement of a proposed structure, if due to its construction, the effective pressure. at the center of the clay layer is expected to be increased to 400 kN/m2

8

b)

What are the construction features & design of sand drains.

6

a)

Why dynamic soil properties are evaluated? List the various laboratory and field tests for dynamic soil properties.

7

b)

Explain strength of cyclically loaded soils.

7

b)

Describe representation of stress conditions by the Mohr circle.

a)

What is liquefaction?

b)

Explain liquefaction related phenomena.

rs

Explain stress paths.

pe

11.

a)

pa

10.

.in

OR 7 7 6 7

OR a)

Explain critical void Ratio.

b)

What is Initiation of liquefaction?

ik sh a

12.

w

w

w

.p

ar

*************

TKN/KS/16/7627

2

7 6

ADVANCED GEOTECHNICAL ENGINEERING.pdf

b) How would you identify an expansive soils from its Index properties. 6. 3. a) What are the effects of grain morphology? 6. b) Explain stress-strain behavior of soil. OR. 7. 4. a) What are effects of size, shape of sand on engineering properties of soil. 6. b) Explain in brief grain morphology? 7. 5. a) Explain 'Electro-osmosis ...

36KB Sizes 1 Downloads 68 Views

Recommend Documents

GEOTECHNICAL ENGINEERING.pdf
There was a problem previewing this document. Retrying... Download. Connect more apps... Try one of the apps below to open or edit this item.

KELLER GEOTECHNICAL CONTRACTOR.pdf
investigation of and. underpass beneath a river. 3 CPT's for a planned. harbour extension using. our all-terrain CPT-truck. 4 Soil investigation for a wind. farm in the North Sea. 5 Core-sampling for a. new container quay. Page 3 of 12. Main menu. Di

Pacifica - Geotechnical Investigation.pdf
Whoops! There was a problem loading more pages. Retrying... Pacifica - Geotechnical Investigation.pdf. Pacifica - Geotechnical Investigation.pdf. Open. Extract.

[PDF] Geotechnical Engineering
Geotechnical Engineering: Principles and Practices, 2/e, is ideal or junior-level soil mechanics or introductory geotechnical engineering courses.

17420 - Geotechnical Engineering.pdf
c) Define focus, epicenter and intensity of earthquake. d) Define specific gravity, degree of saturation and moisture content of soil. Q2. Attempt any TWO (8 Marks).