Structural Analysis
6th Edition
ISBN: 9781337630931
Author: KASSIMALI, Aslam.
Publisher: Cengage,
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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%3D60 mph, max
superelevation=8%.
1) The tangent length of the curve (T) is:
310
O 692
O 1200
O 1665
O 1892
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We have to determine the value of tangent of the given horizontal curve as per the given data in the question.
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- An arterial road is to be connected to a frontage road by a reverse curve with parallel tangents. The distance between the centerline of the two tangent section is 18 m. The PC of the curve is located at station (38+125.31) and the central angle of each of the component curves is 25°. Determine the radius of each of the two curves in the reverse curve if they have the same radius and central angle. Determine the station of PT. Determine the maximum speed to be allowed on this curve if the superelevation rate is 8%.arrow_forwardDetermine 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 1255arrow_forwardanswer key is givenarrow_forward
- 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 speed3D60 mph, max superelevation=8%. 9) The difference in elevation of LEP and REP at NC, in ft, is: O 0.42 O 1.68 O 2.52 O 3.36arrow_forward4. Horizontal Curve: P.C. 12+00.00 P.I T 4= 30° P.T. This highway has a 60 mph speed limit requiring a minimum radius for any curve to be 1500'. If the curve is to begin at Station 12+00.00 and is to have a radius of 1610.10', how long will the curve be? At what station will the PI and PT go? How long will E be? (Answers should all be in hundredths.)arrow_forwardQuestion 2 Field conditions require a highway curve to pass through a fixed point. Compute a suitable equal-tangent vertical curve and full-station elevations: (Compute L, and the elevations at the full stations). Grades of g₁ = -2.50% and 82 = +1.50%, VPI elevation 2560.00 ft at station 315 +00. Fixed elevation 2567.00 ft at station 314 + 00.arrow_forward
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