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Geotechnical Engineering Questions with Correct Answer2
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Geotechnical Engineering Questions with Correct Answer2
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Geotechnical Engineering Questions with CorrectAnswers
How are Ka and Kp related? Correct Answer-Ka= 1/Kp
Relative Compaction Correct Answer-Original Soil Density/ Compacted
Soil Density
What happens to the dry unit weight of soil during compaction, if the
moisture content is increased? Correct Answer-(1) The dry unit weight
first increases, reaches a peak value, and then decreases.
What is the best way to obtain a clay sample for consolidation testing?
Correct Answer-By using a Shelby Tube
Degree of Consolidation (U) Correct Answer-U= (settlement in time
t)/ultimate settlement
Coefficient of Consolidation (Cv) Correct Answer-Rate of Consolidation
Coefficient of Compressibility Correct Answer-
Virgin Curve--Synonyms Correct Answer-(1) Virgin Compression Line
(2) Normally Consolidation Line
,Drainage Path (Hd) Correct Answer-Maximum distance path for pore
water to exist a soil layer
How does the drainage path differ for single drainage and double
drainage? Correct Answer-*Single Drainage*--Hd is the depth of the
soil layer.
*Double Drainage*--Hd is 1/2 the depth of the soil layer.
Terzaghi Equation for Rate of Consolidation Correct Answer-
Compression Index (Cc) Correct Answer-Slope of the virgin curve;
measures the compressibility of normally consolidated soil
Recompression Index (Cv ) Correct Answer-Slope of the recompression
line; measures the compressibility of overconsolidated soil.
Define overconsolidated, normally consolidated, and underconsolidated
soil? Correct Answer-(1) Normally consolidated: OCR= 1
(2) Oveconsolidated: OCR>1
(3) Underconsolidated: OCR <1
Raft Foundation Equation Correct Answer-
Raft Foundation--Synonyms Correct Answer-Mat, Pad
, When should raft foundations be used? Correct Answer-When
individual footings would compromise 1/2 or more of the under building
area.
Net Bearing Capacity Correct Answer-Qnet= Qult-overburden stress
Overburden stress= Df*Soil Density
Eccentricity Correct Answer-Deviation of a curve from circularity
Ultimate Bearing Capacity (Qu) Correct Answer-The theoretical
maximum bearing capacity of a soil
Allowable Bearing Capacity (Qa) Correct Answer-Qa= Qnet/Safety
Factor
Preconsolidation pressure Correct Answer-AKA *maximum overburden
stress*
Maximum past pressure experienced by a soil at a given depth.
Overconsolidation ratio Correct Answer-OCR= Preconsolidation
pressure/present pressure
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