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.
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 6m
Chapter 15 Solutions
Traffic and Highway Engineering
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Similar questions
- 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.arrow_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_forward2 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_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_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
- ASAParrow_forwardFind the length of transition curve and extra width of pavement required on a horizontal curve of radius 300 m of a two lane highway passing through rolling terrain for a design speed of 80 kmph. (Assume all other data as per IRC recommendations)arrow_forwardBFS in an eight-lane freeway has two interchanges in six miles along level terrain. The lane width is 11-ft. The left shoulder is 5.0 ft. The right shoulder width is also 5.0 ft. The traffic volume in the analysis period is 3225 veh/h which consists of 14% heavy trucks. Assume PHF is 0.926. What is the LOS? To increase the FFS, the engineer decided to redraw the pavement marking to create four 12-ft lane per direction, with no left shoulder and a 6.0 ft right shoulder. What is the new FFSarrow_forward
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