Traffic and Highway Engineering
5th Edition
ISBN: 9781305156241
Author: Garber, Nicholas J.
Publisher: Cengage Learning
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Question
Chapter 15, Problem 22P
To determine
The distance required to transition pavement cross-slope from normal crown cross-slopeon a two-lane highway.
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A pavement 12 meters is to be super elevated to allow safe negotiation of 2 degrees and 30 minutes
circular curve at a design speed of 60 kph. What will be the theoretical difference in elevation between
opposite edges of the pavement?
a. 0.942 m
b. 0.742 m
C.
0.296 m
d. 1.567 m
B2
Chapter 15 Solutions
Traffic and Highway Engineering
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- Calculate the extra width of the pavement required on a horizontal curve of radius 700 m on a two lane highway, the design speed being 80 kmph. Assume wheel base length of 6marrow_forwardi need the answer quicklyarrow_forwardA two-lane national highway passing through rolling terrain has horizontal curve of 450 m radius. Assuming design speed of 90 kmph, pavement width of 7 m, with a wheel base of 6.1 m, determine extra width of the pavement required for this curve. Assume other parameters as per relevant IRC recommendations.arrow_forward
- A pavement is to be super-elevated in a certain degree to allow a safe negotiation in acircular curve at a design speed of 60 kph. If the theoretical difference in elevationbetween opposite edges of the pavement is 0.89 meter, what will be the super-elevationin degrees to allow a safe negotiation in a curve?arrow_forwardA highway section, +2% , meet -8%at point with 52.0 m( GTs) at speed 120 Km/hr. Determine the elevation of the highest point on the pavement surface within this section.arrow_forwardA curving roadway has a design speed of 80 km/hr. At one horizontal curve, thesuperelevation has been set at 6% and the angle of side fraction is found to be 6o.Determine the impact factor 0.17 is the answer but i don't know how to get it, pls helparrow_forward
- What super-elevation rate would you recommend for a roadway with a design speed of 110 kph and a radius of 1400 ft? Assume f=0.11.arrow_forwardHighway curve with a radius of 300m is to be super elevated to accomodate a normal speed of 72 kph. Calculate the required super elevation e if the width b of the pavement is 10marrow_forwardFind the psychological widening of a pavement on horizontal curve of radius 400 m for ruling speed of 100 kmph?arrow_forward
- ASAParrow_forwardCALCULATE THE EXTRA WIDENING OF A PAVEMENT AND THE LENGTH OF TRANSITION CURVE NEEDED ON A TWO LANE HIGHWAY HAVING A LONGITUDINAL CIRCULAR CURVE OF RADIUS 300M. ASSUME DESIGN SPEED 80 KMPH, LENGTH OF WHEEL BASE OF LARGEST VEHICLE 6M. ASSUME SUITABLE DATA IF NEEDED.arrow_forwardRegarding superelevation, when a median is less than 3 m wide, the entire pavement and median may be rotated about the median 01 Centerline 02 Outside edge 3 Inside edge 04 All of the abovearrow_forward
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