Exam Details
| Subject | Soil Mechanics and Foundation Engineering | |
| Paper | ||
| Exam / Course | Diploma in Civil Engineering (DCLE - G) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | December, 2016 | |
| City, State | new delhi, |
Question Paper
No. of Printed Pages: 4 IBCE-046 I
DIPLOMAIN CML ENGINEERING DCLE(G)
Term-End Examination
OOU92 December, 2016
J
BCE-046 SOIL MECHAf;lICS AND FOUNDATION ENGINEERING
Time hours Maximum Marks: 70
Note: Question no. 1 is compulsory. Attempt any four questions from the remaining five questions.
1. Choose the correct answer. 7x2=14
The minimum water content at which the soil just begins to crumble when rolled into threads of3 mm dia is known as Liquid Limit
(ii) Plastic Limit
(iii) Shrinkage Limit
Permeability Limit The active earth pressure of a soil is proportional to (where O is the angle of friction) tan (450 O tan2 (450
(iii) tan2 (450
tan (450 O)
The rise of the ground surface due to frost action is called Frost heave
(ii) Frost swell
(iii) Frost bulge
(iv) Frost expansion The pressure of organic matter in soil (Bearing Capacity is abbreviated as BC) Increases the BC
(ii) Decreases the BC
(iii) Makes BC remain unchanged
Has no effect on BC The maximum value of dry density is obtained at (Water Content Maximum WC
(ii) Minimum WC
(iii) Optimum WC
(iv) Normal WC The shearing strength of a cohesionless soil depends on Dry density
(ii) Rate of loading
(iii) Confining pressure
(iv) Nature of loading The compression index of the soil with liquid limit. remains constant
(ii) decreases·
(iii) increases
(iv) has no relation
2. Define the following: 7 x 2=14 Seepage Velocity Permeability Laminar Flow Quicksand Specific Gravity Density Void Ratio
3. A soil sample has a unit weight of 105.7 kg/cum and a saturation of 50%. When its saturation is increased to 75% its unit weight rises to 112·7 kg/cum. Determine the Void Ratio and the Specific Gravity of this soil.
What are the factors that affect the following? Permeability
(ii) Shear strength of soil 2x7=14
4. Calculate the ultimate and allowable bearing capacity for the footing shown in the sketch with a factor of safety of at least 2. <img src='./qimages/8410-4.jpg'>
c=O
O 35°
y 18.10 kN/m3
wn and Gs =2.68
Given Nq 33.3 and Ny 33.92.
5. Write short notes on the following:
Alluvial Soils Vane Shear Test Mohr-Coulomb Theory Resistivity Profiling
6. Explain in detail the classification of coarse grained and fine grained soil.
What are the differences between Triaxial test and Direct shear test Explain the use and reasons for selection. 2x7=14
DIPLOMAIN CML ENGINEERING DCLE(G)
Term-End Examination
OOU92 December, 2016
J
BCE-046 SOIL MECHAf;lICS AND FOUNDATION ENGINEERING
Time hours Maximum Marks: 70
Note: Question no. 1 is compulsory. Attempt any four questions from the remaining five questions.
1. Choose the correct answer. 7x2=14
The minimum water content at which the soil just begins to crumble when rolled into threads of3 mm dia is known as Liquid Limit
(ii) Plastic Limit
(iii) Shrinkage Limit
Permeability Limit The active earth pressure of a soil is proportional to (where O is the angle of friction) tan (450 O tan2 (450
(iii) tan2 (450
tan (450 O)
The rise of the ground surface due to frost action is called Frost heave
(ii) Frost swell
(iii) Frost bulge
(iv) Frost expansion The pressure of organic matter in soil (Bearing Capacity is abbreviated as BC) Increases the BC
(ii) Decreases the BC
(iii) Makes BC remain unchanged
Has no effect on BC The maximum value of dry density is obtained at (Water Content Maximum WC
(ii) Minimum WC
(iii) Optimum WC
(iv) Normal WC The shearing strength of a cohesionless soil depends on Dry density
(ii) Rate of loading
(iii) Confining pressure
(iv) Nature of loading The compression index of the soil with liquid limit. remains constant
(ii) decreases·
(iii) increases
(iv) has no relation
2. Define the following: 7 x 2=14 Seepage Velocity Permeability Laminar Flow Quicksand Specific Gravity Density Void Ratio
3. A soil sample has a unit weight of 105.7 kg/cum and a saturation of 50%. When its saturation is increased to 75% its unit weight rises to 112·7 kg/cum. Determine the Void Ratio and the Specific Gravity of this soil.
What are the factors that affect the following? Permeability
(ii) Shear strength of soil 2x7=14
4. Calculate the ultimate and allowable bearing capacity for the footing shown in the sketch with a factor of safety of at least 2. <img src='./qimages/8410-4.jpg'>
c=O
O 35°
y 18.10 kN/m3
wn and Gs =2.68
Given Nq 33.3 and Ny 33.92.
5. Write short notes on the following:
Alluvial Soils Vane Shear Test Mohr-Coulomb Theory Resistivity Profiling
6. Explain in detail the classification of coarse grained and fine grained soil.
What are the differences between Triaxial test and Direct shear test Explain the use and reasons for selection. 2x7=14
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Subjects
- Construction Equipment
- Construction Management
- Construction Supervision and Building Maintenance
- Irrigation Engineering
- Prestressed Concrete
- Soil Mechanics and Foundation Engineering
- Technical Documentation
- Transportation Engineering