Hydraulics and Geotechnical
Engineering Principles 2025/2026 Exam
All Answers and Illustrations Given
Porosity - 🧠ANSWER ✔✔Ratio of volume of voids and volume of soil.
Void Ratio - 🧠ANSWER ✔✔Ratio of volume of voids and volume of soil
solids.
Degree of Saturation - 🧠ANSWER ✔✔Ratio of volume of water and volume
of soil.
Porosity Range - 🧠ANSWER ✔✔0 ≤ n ≤ 100
Void Ratio Range - 🧠ANSWER ✔✔0 ≤ e
Degree of Saturation Range - 🧠ANSWER ✔✔0 ≤ S ≤ 100
Unit Phase Diagram - 🧠ANSWER ✔✔The volume of water is taken as unity.
Loam - 🧠ANSWER ✔✔Mixture of sand, silt, and clay size particles in
approximately equal proportions.
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Darcy's Law - 🧠ANSWER ✔✔Principle involved in the relationship between
submerged unit weight and saturated unit weight of a soil.
Soil in Civil Engineering - 🧠ANSWER ✔✔The unaggregated and
uncemented deposits of minerals and organic particles covering the earth's
crust.
Water Table Rise Effect - 🧠ANSWER ✔✔Equal increase in pore water
pressure and total stress.
Shear Strength of Soil - 🧠ANSWER ✔✔Is directly proportional to the angle
of internal friction of the soil.
Effective Stress on Soil - 🧠ANSWER ✔✔Decreases voids ratio and
increases permeability.
Coefficient of Compressibility - 🧠ANSWER ✔✔The ratio of stress to strain.
Stiff Cohesive Soil - 🧠ANSWER ✔✔Unconfined compression strength, in
kPa, is between 100 to 200.
Soft Cohesive Soil - 🧠ANSWER ✔✔Unconfined compression strength, in
kPa, is between 0 to 25.
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
Engineering Principles 2025/2026 Exam
All Answers and Illustrations Given
Porosity - 🧠ANSWER ✔✔Ratio of volume of voids and volume of soil.
Void Ratio - 🧠ANSWER ✔✔Ratio of volume of voids and volume of soil
solids.
Degree of Saturation - 🧠ANSWER ✔✔Ratio of volume of water and volume
of soil.
Porosity Range - 🧠ANSWER ✔✔0 ≤ n ≤ 100
Void Ratio Range - 🧠ANSWER ✔✔0 ≤ e
Degree of Saturation Range - 🧠ANSWER ✔✔0 ≤ S ≤ 100
Unit Phase Diagram - 🧠ANSWER ✔✔The volume of water is taken as unity.
Loam - 🧠ANSWER ✔✔Mixture of sand, silt, and clay size particles in
approximately equal proportions.
1
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
, Darcy's Law - 🧠ANSWER ✔✔Principle involved in the relationship between
submerged unit weight and saturated unit weight of a soil.
Soil in Civil Engineering - 🧠ANSWER ✔✔The unaggregated and
uncemented deposits of minerals and organic particles covering the earth's
crust.
Water Table Rise Effect - 🧠ANSWER ✔✔Equal increase in pore water
pressure and total stress.
Shear Strength of Soil - 🧠ANSWER ✔✔Is directly proportional to the angle
of internal friction of the soil.
Effective Stress on Soil - 🧠ANSWER ✔✔Decreases voids ratio and
increases permeability.
Coefficient of Compressibility - 🧠ANSWER ✔✔The ratio of stress to strain.
Stiff Cohesive Soil - 🧠ANSWER ✔✔Unconfined compression strength, in
kPa, is between 100 to 200.
Soft Cohesive Soil - 🧠ANSWER ✔✔Unconfined compression strength, in
kPa, is between 0 to 25.
2
COPYRIGHT©JOSHCLAY 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE. PRIVACY
STATEMENT. ALL RIGHTS RESERVED
