Engineering, 22.09.2020 19:01 clairee002
A two-lane highway (one 3.6-m lane in each direction) goes from normal crown with 2% cross-slopes to 8% superelevation by means of a spiral transition curve. The spiral curve is 60 m long. If the superelevation is attained by rotating the road section around its centreline.
Required:
Determine the minimum length of the transition if the difference in grade between the centerline and edge of traveled way is limited to 1/200. Round up to the next largest 20-m interval.
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A two-lane highway (one 3.6-m lane in each direction) goes from normal crown with 2% cross-slopes to...
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