If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

1.

If a 0.7% upgrade meets a 0.65% downgrade at a summit and the permissible rate of change of grade per chain length is 0.10%, the length of the vertical curve, is

[A].	10 chains
[B].	12 chains
[C].	14 chains
[D].	16 chains

Answer: Option C

Explanation:

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