Q64
Which of the following best explains the failure of the St. Francis Dam in California?
A.
Foundation on granite
B.
Water hammer effect
C.
Poor geological understanding of schist and conglomerate contact
AnswerD.
Subsurface mining collapse
Answer: Option C
Solution
Answer: Option C
Solution:
The St. Francis Dam collapsed due to unrecognized weaknesses at the contact between schist and conglomerate, highlighting the importance of geological mapping in engineering.