What is the effect of groundwater on excavation stability?
A. Increases shear strength
B. Reduces weight
C. Decreases stability due to pore pressure
D. No effect
Answer: Option C
Solution (By Examveda Team)
Groundwater reduces effective stress and increases pore pressure, making slopes and excavations less stable and more prone to failure.This Question Belongs to Geological Engineering >> Engineering Geology For Construction
What is the most important geological consideration before constructing a dam?
A. Soil fertility
B. Rock type and structure
C. Surface vegetation
D. Proximity to roads
Which test is commonly used to determine rock strength for construction suitability?
A. Permeability test
B. Schmidt hammer test
C. Sieve analysis
D. Vane shear test
What geological structure is most hazardous for tunnel construction?
A. Horizontal bedding
B. Fault zone
C. Anticline fold
D. Massive granite
The unconfined compressive strength of a rock is a measure of its:
A. Tensile strength
B. Load-bearing capacity without lateral support
C. Weathering rate
D. Porosity
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