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Geological Engineering · Q62

Introduction to Geological Engineering

Engineering and GATE · Geological Engineering · question 62

Q62

What does RQD (Rock Quality Designation) measure?

A.
Rock color variation
B.
Degree of rock weathering
C.
Quality of rock core recovery
Answer
D.
Depth of borehole

Answer: Option C

Solution

Answer: Option C
Solution:
RQD is a percentage representing the quality of rock core recovery during drilling.It evaluates the degree of jointing and fracture in the rock mass.Correct Answer: Quality of rock core recovery.