Download AKTU B-Tech 5th Sem 2016-2017 Geotechnical Engineering Nce 501 Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2016-2017 Geotechnical Engineering Nce 501 Question Paper

Printed Pages: 3 NCE-50l
(Following Paper ID and Roll No. to be filled in your
Answer Books)
l?upcr ll) : 2289542 ? Roll No,
B.TECH.
Regular Theory Examination (Odd Sem - V), 2016-17
GEOTECHNICAL ENGINEERING
Time : 3 Hours Max. Marks : 100
Note: i) Attempt all questions.
ii) Marks are indicated against each questions.
iii) Assume any data suitably, if required.
1. Attempt all parts. Each part carries equal marks.
(10X2=20) '
a) De?ne the shear strength of soil.
b) Explain the coe?icient of permeability.
c) What do you mean by hydraulic conductivity?
d) De?ne void ratio, bulk unit weight and speci?c
gravity.
e) The void ratio of soil sample is 1; determine the
corresponding porosity of the soil sample.
f) Explain the isobar.
g) Brie?y explain the ?occulent grain structure.
h) Give states the Darcy?s Laws.
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. i)
j)
NCE-50l
De?ne index properties of soil.
De?ne active earth pressure in brief.
2. Attempt any ?ve questions (5X 10:50)
a)
b)
d)
g)
Explain SPT test. Write the procedure in brief.
A soil sample 40 mm thick takes 40 minute to reach
40% consolidation. Find the time taken for a clay
layer 8 m thick to reach 80% consolidation. Assume
double drainage in both case.
Compare b/w compaction and consolidations.
A soil specimen has a water content of 15% and a
wet unit weight of 25 KN/MA3. If the speci?c
gravity of solids is 2.70, determine the Dry unit
weight, void ratio, and the Degree of saturation, take
Yw=10kn/m"3.
A square footing has dimensions of 2m x 2m and a
depth of 3m. Determine its ultimate bearing capacity
in pure clay with an uncon?ned strength of 0. 1 5 N/
mnrz, ?=0? andy= 1.7 g/CmA 3 .Assume Terzaghi?s
factors for 4) = 0, as NC = 5.7; Nq =1 and Ny = 0.
Write the short notes on
i)' Field compaction control.
ii) Proctor needle method.
Drive the Laplace?s equation of continuity with all
assumptions.
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NCE-501
h) De?ne the skempton?s pore pressure parameters. '
Derive an expression for b/w pore water pressure'
and applied stress.
3. Attempt any two parts of the following (2X15=30) ?
a) Explain the ?eld methods for compaction of soil
in details.
b) A soil sample of saturated soil has a water content
of 35% and bulk unit weight of 25 KN/MA3.
Determine dry density, void ratio ?and speci?c
gravity of solid particles. What would be the bulk
unit weight of the same soil at the same void ratio
but at a degree saturation 60% take yw = 10 kn/ m A 3 .
c) What do you mean by site investigation? What are
the different purposes for which site investigation
is done?
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