Top 10 Geotechnical Engineering Interview Questions and Answers|geotechnical engineering interview questions and answers pdf |geotechnical engineering

Top 10 Geotechnical Engineering Interview Questions and Answers

GEOTECH FRESHERS ( LEVEL -1 ) Q & A

1. Who is the Father of Soil Mechanics?

Karl Terzaghi is known as the Father of Soil Mechanics.

He was the 1st person to write a book on soil mechanics called “Earthbow Mechaik”.

2. classify the types of soil?

• classification based on grain size
• Textural classification
• AASHTO classification system
• Unified soil classification system

3. can you explain based on grain size classification of soil ?

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Very coarse soils	Boulder size		> 300 mm
	Cobble size		80 - 300 mm
Coarse soils	Gravel size (G)	Coarse	20 - 80 mm
		Fine	4.75 - 20 mm
	Sand size (S)	Coarse	2 - 4.75 mm
		Medium	0.425 - 2 mm
		Fine	0.075 - 0.425 mm
Fine soils	Silt size (M)		0.002 - 0.075 mm
	Clay size (C)		< 0.002 mm

Gravel, sand, silt, and clay are represented by group symbols G, S, M, and C respectively.

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4. what are all the methods to find the water content of soil?

• Oven Drying Method (Simplest and most accurate)
• Pycnometer Method
• Calcium Carbide Method
• Sand Bath Method
• Torsion Balance Moisture Meter Method
• Alcohol Method

5. Which mineral is present in Black cotton soil?

Mont morillionite.

Because of Mont morillionite expansion takes place in black cotton soil. As the water bond between them is weakest.

6. How shear strength of soil is calculated?

There are two types of test to calculate the shear strength of soil –

1. Laboratory Test
2. Field Test

7. How shear strength of soil is calculated in Laboratory Test?

• Direct shear test
• Triaxial compression test
• Unconfined compression test
• Vane shear test

8. How shear strength of soil is calculated in Field Test?

• vane shear
• Standard Penetration test
• cone penetration test

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PLAN	ESTIMATION	ELEVATION	CIVIL JOBS
SOIL REPORT	COLUMN DESIGN	MCQ	EXCEL
VALUATION REPORT	FOOTING DESIGN	BOOKS	INDUSTRIAL
COLUMN DRAWING	BEAM DESIGN	VASTU	TRUSS
FOOTING DRAWING	SLAB DESIGN	HOUSE PLAN	SLAB DRAWING

9. Explain Quick Sand Condition?

When flow takes place in the soil medium in vertically upward direction then seepage pressure also acts in the upward direction resulting in the decrease of vertical effective pressure in the soil mass.

If seepage pressure is such that it equals the submerged weight of soil mass effective vertical pressure reduces to zero, in such condition cohesion less soil losses all its shear strength & soil particles have the tendency to flow along with flowing water. This condition is referred as Quick sand condition or sand boiling.

10. Difference between Compaction & Consolidation?

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