A vehicle is passing trough a simple curve and the drive's reaction time is 2.5 sec. towards a building that is located 7 m from the centerline of the inside lane as shown. The curve has a minimum radius of 130 m at road level. If the coefficient of friction is 0.35 and the road is in the falling gradient of 4% determine the appropriate speed limit in kph. 7 m

A vehicle is passing trough a simple curve and the drive's reaction time is 2.5 sec. towards a building that is located 7 m from the centerline of the inside lane as shown. The curve has a minimum radius of 130 m at road level. If the coefficient of friction is 0.35 and the road is in the falling gradient of 4% determine the appropriate speed limit in kph. 7 m

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

A vehicle traverses a superelevated curve at 52 kph. If the radius of the curve is 64 meters, and the coefficient of friction is equal to 0.3, calculate the angle of superelevation (θ) as measured from the horizontal.
Q- A road is provided with a horizontal circular curve having deflection angle of 55° and centre line radius of 250 m. A transition curve is to be provided at each end of the circular curve of such length that the rate of gain of radial acceleration is 0.3 m/s³ at a speed of 50 km per hour. Find the length of the transition curve required at each of the ends.
A road with 4.5% upward grade has a design speed of 90kmph, if coefficient of longitudinal friction 0.36 and driver reaction time was 2.5sec. What will be the sight distance available? Now if this road has approached a crest while meeting another downward grade of 3.6%, determine the length of the vertical curve required when object and driver are located on the same vertical curve. Considering the crest (Point of intersection or PI) RL as 110.00 develop the vertical curve table to 20m interval. Show the RL of key locations as PI or EVC even though these may not fall at regular interval chosen.
Qg:- A horizontal curve with a radius of 200 m forms part of a two-lane highway with a posted speed of 50 Kph. Determine: 1)) The distance a house can be placed from the centerline of the inside of the curve without reduced the required stopping sight distance? 2)) Length of circular curve ? Assume perception reaction time is 2.5 sec., the highway is flat, lane width = 4 m, and central angle A = 25°.
1. The stopping sight distance on a curved section of a road is 500 ft. The superelevation of the curve is 4.5%. The current radius of the curve is 900 ft. What should be the design speed on the curve? (Using AASHTO tables)
A vehicle travelling at design speed of 80 kmph on a descending gradient of 2.5% meets on ascending grade of 3%. Calculate the minimum length of vertical curve required (in meters) to facilitate smooth movement of vehicle considering head light sight distance of 100 m and assume that passenger is comfortable is all conditions,
Highway problem.
Determine the smallest radius of a curve that a car can be driven round at a speed of 90km/h-1 without overturning.The track of the car is 1.8m and the centre of gravity is 0.6m above the ground
Question 14 A blind horizontal curve has a length equivalent to 54 meters. If the the design sight distance is equivalent to 67 meters, and the middle ordinate is equivalent to 8.2 meters, Calculate the minimum radius of the curve so it can be classified SAFE. • Question 16 A vehicle traverses a superelevated curve at 52 kph. If the radius of the curve is 64 meters, and the coefficient of friction is equal to 0.3, calculate the angle of superelevation (0) as measured from the horizontal.
A vertical curve is needed to join to tangents; G₁=2% and G2-5%. Assuming the worst case scenario for braking, and the AASHTO recommended values for deceleration and perception-reaction time, calculate the minimum length of curve (ft) needed to satisfy the comfort criteria. The design speed is 50 mph. Response Feedback: G2-G₁ is positive, therefore a sag curve. A=3 Lmin-AV²146.5
A horizontal circular curve with a central line radius of 200 m is provided on 2 lane two way SH section. The width of two lane road is 7 m Design a speed of the section is 80 km/h. The break reaction time is 2.4 seconds and the coefficient of friction is longitudinal and lateral direction are 0.355 and 0.15 respectively, find the safe stopping site distance on this section and setback distance from the centre line of the inner lane