On a railroad, a -8% grade meets a +0.40% grade at station 2 + 700m whose elevation is 30.00m above datum. The maximum allowable change in grade per section having a length of 20m is 0.15. It is desired to place a culvert pipe to drain the flood waters during heavy downpour.
On a railroad, a -8% grade meets a +0.40% grade at station 2 + 700m whose elevation is 30.00m above datum. The maximum allowable change in grade per section having a length of 20m is 0.15. It is desired to place a culvert pipe to drain the flood waters during heavy downpour.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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On a railroad, a -8% grade meets a +0.40% grade at station 2 + 700m whose elevation is 30.00m above datum. The maximum allowable change in grade per section having a length of 20m is 0.15. It is desired to place a culvert pipe to drain the flood waters during heavy downpour.
a. At what station will the culvert pipe will be installed?
b. At what elevation must the invert of the pipe be laid if the pipe has a diameter of 0.90m and the backfill is 0.30m deep?
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