2. A horizontal curve with spiral is designed for a two-lane road in mountainous terrain. The following data are known: - Design speed = 100 km/h - Deflection angle = 32 degrees Station of PI: 16+192.50 Superelevation rate, e = 0.06 - Lane width = 3.65 m Normal cross slope, q = 0.02 Slope of the O.E. @tangent runout = 1:400 Required: Determine the length of spiral curve and stations of TS, SC, CS, and ST.
2. A horizontal curve with spiral is designed for a two-lane road in mountainous terrain. The following data are known: - Design speed = 100 km/h - Deflection angle = 32 degrees Station of PI: 16+192.50 Superelevation rate, e = 0.06 - Lane width = 3.65 m Normal cross slope, q = 0.02 Slope of the O.E. @tangent runout = 1:400 Required: Determine the length of spiral curve and stations of TS, SC, CS, and ST.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:2. A horizontal curve with spiral is designed for a two-lane road in mountainous terrain. The following
data are known:
Design speed = 100 km/h
Deflection angle = 32 degrees
Station of PI: 16+192.50
Superelevation rate, e = 0.06
Lane width = 3.65 m
Normal cross slope, q = 0.02
Slope of the O.E. @ tangent runout = 1:400
Required:
Determine the length of spiral curve and stations of TS, SC, CS, and ST.
Draw a neat sketch for the development of superelevation if the cross-section is rotated about the
centreline.
Draw neat sketches for the highway's cross-section at stations: (15+900), (16+017), (16+080),
and (16+115)
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