What is the suggested economic buttress spacing for a mean dam height of greater

Question

What is the suggested economic buttress spacing for a mean dam height of greater than 45 m?

Options:

A . 4.5

B . 4.5 to 7.5

C . 7.5 to 12

D . 12 to 15

Answer: Option D
Answer: (d).12 to 15

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