Q2) Given a design speed of 70 km/h, a horizontal curve radius of 550 m, a road platform width of 10 meters, and an initial slope of 1% for a two-lane highway, superelevation is applied by rotating the road about its inner line (maintaining constant elevations along the inner line). a) Calculate the required superelevation rate. b) Determine the superelevation application length. c) Illustrate the cross-section of the roadway at each 1% change in superelevation, including all necessary information on the drawings.
Q2) Given a design speed of 70 km/h, a horizontal curve radius of 550 m, a road platform width of 10 meters, and an initial slope of 1% for a two-lane highway, superelevation is applied by rotating the road about its inner line (maintaining constant elevations along the inner line). a) Calculate the required superelevation rate. b) Determine the superelevation application length. c) Illustrate the cross-section of the roadway at each 1% change in superelevation, including all necessary information on the drawings.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Q2) Given a design speed of 70 km/h, a horizontal curve radius of 550 m, a road platform width
of 10 meters, and an initial slope of 1% for a two-lane highway, superelevation is applied by
rotating the road about its inner line (maintaining constant elevations along the inner line).
a) Calculate the required superelevation rate.
b) Determine the superelevation application length.
c) Illustrate the cross-section of the roadway at each 1% change in superelevation, including
all necessary information on the drawings.
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