Determine variables requested below for a horizontal curve with the following characteristics. Length of curve 1255', Radius 1200', sta of PC 12+00 superelevation rotated about the roadway centerline, 3 lane roadway, 14ft lane width, entire road section normal crown=2%, road design speed=60 mph, max superelevation=8% 3) The Lr of the curve, in ft, is: O 77.5 310 692 O 1200 1255

Traffic and Highway Engineering
5th Edition
ISBN:9781305156241
Author:Garber, Nicholas J.
Publisher:Garber, Nicholas J.
Chapter15: Geometric Design Of Highway Facilities
Section: Chapter Questions
Problem 13P
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Determine variables requested below for a horizontal curve with the following
characteristics.
Length of curve 1255', Radius 1200', sta of PC 12+00 superelevation rotated
about the roadway centerline, 3 lane roadway, 14ft lane width, entire road
section normal crown=2%, road design speed=60 mph, max
superelevation=8%
3) The Lr of the curve, in ft, is:
77.5
O 310
692
1200
1255
Transcribed Image Text:Determine variables requested below for a horizontal curve with the following characteristics. Length of curve 1255', Radius 1200', sta of PC 12+00 superelevation rotated about the roadway centerline, 3 lane roadway, 14ft lane width, entire road section normal crown=2%, road design speed=60 mph, max superelevation=8% 3) The Lr of the curve, in ft, is: 77.5 O 310 692 1200 1255
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Given data:

Speed = 60 mphmax super elevation = 8%3 Lane roadway

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