Geotech Final Exam with correct
answers
Soil Mechanics - ** VERIFIED ANSWERS **✔✔Involves the application of engineering mechanics
to understand the physical and mechanical behavior of soils and rocks
Foundations - ** VERIFIED ANSWERS **✔✔Involves the application of soil mechanics to the
analysis and design of the foundation for buildings, dams, embankments, tunnels, canals and
waterways, bridges, roads, and other systems
Geotechnical Engineering - ** VERIFIED ANSWERS **✔✔Soil Mechanics + Foundation
Engineering
Residual soil - ** VERIFIED ANSWERS **✔✔Remains at site of weathering and has texture of
mother rock, strong, well graded
Alluvial soil - ** VERIFIED ANSWERS **✔✔River deposit, poorly graded
Aeolian soil - ** VERIFIED ANSWERS **✔✔Dessert, loose sand, loess
Glacial soil - ** VERIFIED ANSWERS **✔✔Glacial lakes, mixture of boulders, sands, and clays,
usually problematic
Landfill - ** VERIFIED ANSWERS **✔✔Man-made, high settlement by decaying or organic
materials
Types of soil - ** VERIFIED ANSWERS **✔✔Boulders, gravel, sand, silt, clay
, No. 4 sieve or 4.75 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between gravel and
sand?
No. 200 sieve or 0.075 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between sand and
silt?
0.002 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between silt and clay?
Course-grained soils - ** VERIFIED ANSWERS **✔✔You can see the grains in:
Silt - ** VERIFIED ANSWERS **✔✔You can feel and maybe see grains in:
Clay - ** VERIFIED ANSWERS **✔✔This fine-grained soil type is described as creamy
Platy or flaky shape - ** VERIFIED ANSWERS **✔✔Fine-grained soil particles shapes' are described
as:
Cumulative mass retained - ** VERIFIED ANSWERS **✔✔This is the total mass of the amount
retained on the current sieve plus all previous sieves
% coarser - ** VERIFIED ANSWERS **✔✔(Cumulative mass retained/Total weight)*100=?
% finer - ** VERIFIED ANSWERS **✔✔100-%coarser=?
Coefficient of Uniformity - ** VERIFIED ANSWERS **✔✔Cu=D60/D10
Coefficient of Gradation - ** VERIFIED ANSWERS **✔✔Cc=(D30)^2/(D60D10)
Fine-grained soils - ** VERIFIED ANSWERS **✔✔The sieving process cannot be used for:
answers
Soil Mechanics - ** VERIFIED ANSWERS **✔✔Involves the application of engineering mechanics
to understand the physical and mechanical behavior of soils and rocks
Foundations - ** VERIFIED ANSWERS **✔✔Involves the application of soil mechanics to the
analysis and design of the foundation for buildings, dams, embankments, tunnels, canals and
waterways, bridges, roads, and other systems
Geotechnical Engineering - ** VERIFIED ANSWERS **✔✔Soil Mechanics + Foundation
Engineering
Residual soil - ** VERIFIED ANSWERS **✔✔Remains at site of weathering and has texture of
mother rock, strong, well graded
Alluvial soil - ** VERIFIED ANSWERS **✔✔River deposit, poorly graded
Aeolian soil - ** VERIFIED ANSWERS **✔✔Dessert, loose sand, loess
Glacial soil - ** VERIFIED ANSWERS **✔✔Glacial lakes, mixture of boulders, sands, and clays,
usually problematic
Landfill - ** VERIFIED ANSWERS **✔✔Man-made, high settlement by decaying or organic
materials
Types of soil - ** VERIFIED ANSWERS **✔✔Boulders, gravel, sand, silt, clay
, No. 4 sieve or 4.75 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between gravel and
sand?
No. 200 sieve or 0.075 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between sand and
silt?
0.002 mm - ** VERIFIED ANSWERS **✔✔What is the boundary between silt and clay?
Course-grained soils - ** VERIFIED ANSWERS **✔✔You can see the grains in:
Silt - ** VERIFIED ANSWERS **✔✔You can feel and maybe see grains in:
Clay - ** VERIFIED ANSWERS **✔✔This fine-grained soil type is described as creamy
Platy or flaky shape - ** VERIFIED ANSWERS **✔✔Fine-grained soil particles shapes' are described
as:
Cumulative mass retained - ** VERIFIED ANSWERS **✔✔This is the total mass of the amount
retained on the current sieve plus all previous sieves
% coarser - ** VERIFIED ANSWERS **✔✔(Cumulative mass retained/Total weight)*100=?
% finer - ** VERIFIED ANSWERS **✔✔100-%coarser=?
Coefficient of Uniformity - ** VERIFIED ANSWERS **✔✔Cu=D60/D10
Coefficient of Gradation - ** VERIFIED ANSWERS **✔✔Cc=(D30)^2/(D60D10)
Fine-grained soils - ** VERIFIED ANSWERS **✔✔The sieving process cannot be used for:
