A banked circular highway curve is designed for traffic moving at 63 km/h. The radius of the curve is 204 m. Traffic is moving along thehighway at 45 km/h on a rainy day. What is the minimum coefficient of friction between tires and road that will allow cars to take theturn without sliding off the road? (Assume the cars do not have negative lift.)n onNumberiUnits

Given:- Radius of the curve, R= 204 m designed speed , v= 63 km/h = 56 km/h (1000 m/1km)( 1…

Answered: A banked circular highway curve is…

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

TRANSPORTATION ENGINEERING A standard HL-93 Truck impends to overturn on a super elevation highway curve at a speed if 60 mph. The height of its center of gravity is 2.9m and the distance of the two front tires is 2.9 m. The superelevation is 10 degrees. •Compute the radius of the curve assuming no skidding resistance. (Use f=1.0) •Determine the value of left reaction on wheels due to centrifugal force, RCL.
A car having a weight of 40kN 5 points is moving at a certain speed around the curve. Assuming no lateralpressure between the tire and pavement and considering a centrifugal ratio of 0.30, Compute the force in kN that will tend to pull the car away from the center of the curve. assume f = 1.0 for fatigue design.
The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60 km/hour, and the design coefficient of lateral friction between the tyre and the road surface is 0.15. The estimated value of coefficient of friction needed (if no superelevation is provided) will be
A vehicle moving at a speed at a speed of 90 kph along an incline surface having aslope of 5%. If the coefficient of friction is 0.20, determine the braking distance.
The radius of a horizontal circular curve on a highway is 120 m. The design speed is 60 km/hour, and the design coefficient of lateral friction between the tyre and the road surface is 0.15. The estimated value of superelevation required (if full lateral friction is assumed to develop), and the value of coefficient of friction needed (if no superelevation is provided) will, respectively, be (a) (c) 1 11.6 1 11.6 and 0.10 and 0.24 (b) (d) 1 10.5 1 12.9 and 0.37 and 0.24
A car having a weight of 40 kN is moving at a certain speed around the curve. Assuming no lateral pressure between the tire and the pavement, compute for the following if the centrifugal ratio is 0.30. (a) Compute the force that will tend to pull the car away from the center of the curve. (b) If the degree of the curve is 4 degrees, determine the maximum speed that the car could move around the curve. (c) Compute for the embankment angle to be provided for this speed if the skid resistance is 0.12.
Car B is towing car A at a constant speed of 10 m/s on an uphill grade when the brakes of car A are fully applied causing all four wheels to skid. The driver of car B does not change the throttle setting or change gears. The masses of the cars A and B are 1400 kg and 1200 kg, respectively, and the coefficient of kinetic friction is 0.8. Neglecting air resistance and rolling resistance, determine (a) 5m 10 m/s 10 m/s the distance traveled by the cars before they come to a stop, (b) the tension in the cable.
Estimate the horsepower required to accelerate a 2,500-lb vehicle traveling 30 mph up a 5% grade at the rate of 6 ft/sec². The vehicle has a frontal cross-sectional area of 20 ft2. The roadway has a straight alignment and a badly broken and patched asphalt surface Assume the drag coefficient = 0.3 and a rolling resistance =34 Use the following: (a) Inertia resistance, F, =? (compute) (b) Grade resistance, F =? (compute) (c) Rolling resistance, F, = 34 lb (d) Curve resistance, F = 0 (e) Air resistance; Use the formula :F= 0.0006AV² (f) Horsepower
The car has a mass of 1.6 Mg and center of mass at G. If the coefficient of static friction between the shoulder of the road and the tires is μs = 0.4, determine the greatest slope θ the shoulder can have without causing the car to slip or tip over if the car travels along the shoulder at constant velocity.
A standard HL-93 Truck impends to overturn on a super elevation highway curve at a speed if 60 mph. The height of its center of gravity is 1.8 m and the distance of the two front tires is 1.8 m. The superelevation is 10 degrees. •Compute the radius of the curve assuming no skidding resistance. (Use f=1.0) •Determine the value of left reaction on wheels due to centrifugal force, RCL.
1. A driver is travelling at 50 mph is 80 m from a wall ahead, if the driver applies the brake immediately at t=2 secs, and begins slowing down at 10m/s^2.a. Find the distance from the stopping point to the wall.b. Determine the braking time or the time during deceleration.c. Determine the average skid resistance, assuming brake efficiency of 70%. 2. A two lane road with design speed of 80 kph has horizontal curve of radius 480 m. Design the rate of superelevation. By how much should the outer edges of the pavement be raised with respect to the center line, if the pavement is rotated with respect to the center line and the width of the pavement at the horizontal curve is 7.5 m?
35. Determine the minimum speed of a car at the point the brakes are immediately applied to avoid a collision based upon a yaw mark chord measuring 70.4 feet and a middle ordinate measuring 6 feet. The drag factor C² M of the road surface is 1.4 (Use-Mand S=√15fr ) A. 34.2 MPH B. 9.9 MPH C. 16.4 MPH D. 47.2 MPH

SEE MORE QUESTIONS

Recommended textbooks for you

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Structural Analysis

Civil Engineering

ISBN:

9781337630931

Author:

KASSIMALI, Aslam.

Publisher:

Cengage,

Structural Analysis (10th Edition)

Civil Engineering

ISBN:

9780134610672

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Principles of Foundation Engineering (MindTap Cou…

Civil Engineering

ISBN:

9781337705028

Author:

Braja M. Das, Nagaratnam Sivakugan

Publisher:

Cengage Learning

Fundamentals of Structural Analysis

Civil Engineering

ISBN:

9780073398006

Author:

Kenneth M. Leet Emeritus, Chia-Ming Uang, Joel Lanning

Publisher:

McGraw-Hill Education

Sustainable Energy

Civil Engineering

ISBN:

9781337551663

Author:

DUNLAP, Richard A.

Publisher:

Cengage,

Traffic and Highway Engineering

Civil Engineering

ISBN:

9781305156241

Author:

Garber, Nicholas J.

Publisher:

Cengage Learning

SEE MORE TEXTBOOKS