Question

A Valley curve is formed by a descending gradient of 1 in 20 meeting an ascending gradient of 1 in 25. Design the length of the valley curve based on both the conditions, if the design speed adopted is 60 kmph. Assume allowable rate of change of centrifugal acceleration as 2.736 Kmph/sec. Perform check.

If the above curve is reversed to form a Summit curve calculate the length of summit curve for SSD of 65m and OSD of 300m. Perform check.

Answer 1

Please give feedback.