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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Students have asked these similar questions
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
How much should the outer edges of the pavement be raised with respect
to the central line on a two-lane road designed to cater for mixed traffic at a speed of 65 km/hr on a
horizontal curve of radius 160 m, if
(i) the pavement is rotated w.r.t. the central line, and
(ii) the pavement is rotated w.r.t. the inner edge.
A 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.
Chapter 15 Solutions
Traffic and Highway Engineering
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Similar questions
- 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_forward2. Calculate the total stopping sight distance for a wet pavement condition, if the design speed is 100 Km/hr for the following three conditions. a. Road is flat b. The road has a 6% downslope c. The road has a 3% upslopearrow_forwardA 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_forward
- A 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_forwardWhat 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_forward
- 2 A vehicle initially traveling at (75 mile/hr.), skids to a stop taking (170) m to do so. the coefficient of skidding resistance (0.36). What should the grade be for this roadway. (Use t = 2.5 sec.).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_forwardDesign a highway with the following criteria (Determine the minimum radius, widening and check if it needs transition spiral) Design speed = 85 kph I = 20o e = 0.06 sight distance = 125m m = 10 m 2 lane road Typical car wheel length 2.5 m Width of pavement per lane = 3.6 marrow_forward
- ASAParrow_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_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_forward
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