a vertical curve joins a -1.2% grade to a + 0.8% grade The P.I of the vertical curve is at station 75 m elevation 50.9 m above sea level The center line of the roadway must clear a pipe located at the station 75 + 40 by 0.8 m The elevation of the top of the pipe is 51.1 meter above sea level what is the minimum length of the vertical curve that can be used
a vertical curve joins a -1.2% grade to a + 0.8% grade The P.I of the vertical curve is at station 75 m elevation 50.9 m above sea level The center line of the roadway must clear a pipe located at the station 75 + 40 by 0.8 m The elevation of the top of the pipe is 51.1 meter above sea level what is the minimum length of the vertical curve that can be used
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