11.Two vertical parabolic curves have been connected to form aroadway by three gradients: -5.30 %, 4.10 % and -3.70 %respectively. If the length of the second curve is half the length ofthe first curve, compute the following:c. The length of the first curve in yard if the second curve has adesign speed of 70 kph for passing sight distance with thedriver's eye height assumed to be 1.5 m and object height of0.33 m.

Given - Three Gradient g1 = -5.30% , g2 = 4.10% , g3 = -3.70% Design speed = 70kph. Object height =…

11. Two vertical parabolic curves have been connected to form a roadway by three gradients: -5.30 %, 4.10 % and -3.70 % respectively. If the length of the second curve is half the length of the first curve, compute the following:

11. Two vertical parabolic curves have been connected to form a roadway by three gradients: -5.30 %, 4.10 % and -3.70 % respectively. If the length of the second curve is half the length of the first curve, compute the following:

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Both vertical and horizontal curves on the same section of a highway are designed at the same speed. A vertical sag-curve on this highway connects G1=-7% and G2=? % grades and is 300 m long. If a horizontal curve on this highway is on a two-lane section with 3.6-m lanes, has a central angle of 43 degrees and a superelevation of 4%,
Road Engineering (Railway Engineering)
Design a length of vertical curve for a sag curve based on 1. Comfort Ride 2. Headlight Sight Distance Design Speed = 40 mph SSD = 305 g1 = -3.2% g2 = +2.4%
A vertical curve (with EQUAL tangent lengths) is to connect a +1.35% gradient to a -2.25% gradient on a highway designed for a speed of 80 kmph. The K value for the highway is 55 and the minimum required length is to be used. The reduced level and through chainage of the intersection point of the gradients are 78.34 metres and 667.49 metres respectively. i) ii) Calculate the reduced levels and the chainages of the tangent points. Calculate the reduced levels at exact 25 metre multiples of through chainage along the curve. ii) Calculate the through chainage and the reduced level of the highest point on the curve.
An equal-tangent vertical curve is designed for the year 2030 for a design speed of 70 mi/h to connect grades G1 = 1.2% and G2 = - 2.1%. In 2030, vehicles have become smaller so that the driver's eye height is assumed to be 3.0 ft above the pavement and roadway objects are assumed to be 1.0 ft above the pavement surface. Compute the design curve length for the year 2030. A. 1178.02 В. 1032.09 C. 974.12 D. 980.25
1. Two vertical parabolic curves have been connected to form a roadway by three gradients: -5.30 %, 4.10 % and -3.70 % respectively. If the length of the second curve is twice as the length of the first curve, compute the following: a. The length of the second curve in ft given that the design speed of the first curve is 80 kph assuming a vertical radial acceleration of 0.3m/s for comfort criterion. b. The length of the second curve in m if the headlight height of the vehicle is 0.73 m above the first curve and the inclined upward angle of the headlight beam relative to the horizontal plane of the vehicle is 1.57'. The design speed for the first curve for this situation is 90 kph. c. The length of the first curve in yard if the total length of the roadway is 745 m given that the second curve has a design speed of 70 kph for passing sight distance with the driver's eye height assumed to be 1.5 mand object height of 0.33 m d. The total length of the roadway in km if a bridge structure…
The gradient for a B.G railway line such that the grade resistance together with curve resistance due a 4° curve which will be equivalent to a simple ruling gradient of 1 in 150 is
Please answer question below and include all steps on how you got the answer
A sag curve connects a -1.5 percent grade with a +2.5 percent grade on a rural arterial highway. The criterion selected for design is the minimum stopping sight distance, and the design speed of the highway is 70 mph. Assume the perception-reaction time of 2.5 seconds and a deceleration rate of 11.2 ft./sec^2. a. Determine the length of the curve. b. Compute the elevation of the curve at PVC and PVT if the grades intersect at station (475 + 00) at an elevation of 300 ft.
A two-lane highway (one 3.6 m lane in each direction) goes from normal crown with 2% cross-slopes to 10% superelevation by means of a spiral transition curve. Determine the minimum length of the transition if the difference in grade between the centerline and edge of traveled way is limited to1:200.Round up to the next largest 20m interval.(b) Draw the superelevation diagram for the transition described in part a ,The station of the TS is 160+00
Quick...