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- A 300 m radius highway curve is to be superelevated so that skidding will not be impending at speeds below km 100 . If the minimum u is assumed to be 0.2, what superelevation in mm is required for a 8 m roadway? hr What will be the most comfortable speed for the passengers on this curve if it has the superelevation found above?Highway 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 10mA 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 help
- A highway curve with a radius of 600 m is to be banked for a speed of 80 km/hr. What should be theangle of bank so that at the design speed, there will be no frictional force necessary on the tire in adirection perpendicular to the plane of rolling?You are asked to design superelevation for a horizontal simple of radius (2290.0 ft.) in Al- Hilla city, the design speed (90 Km/hr.), the roadway lane width (3.65) m, with lanes and normal crown slope (1.55%). what superelevation you recommended. Calculate with aid of sketch the all elevation of cross and longitudinal section due to superelevation development. (Revolving the traveled way about centerline, the elevation of centerline (C.L) = 33.34 m, use f=0.05).Engineers group have been decided to design a highway with vertical curve in order to transfer the traffic volume through it, with a (1.90) percent grade meting (- 3.90) percent grade. The vertical curve length (984.00) ft. (Use fSkidding= 0.35, t = 2.5 sec.), sight distance you :recommended is 677 ft. 505 m. O 605 ft. O 650 ft. O 600 ft. O
- A vehicle is moving on two lane National Highway on a horizontal curve of radius 150 m at a design speed of 80 kmph, what is the extra widening required to negotiate this curve? Consider length of wheel base as 6 m.A large grain elevator is located 40 ft from the centerline of a two- lane highway, which has 12-ft lanes. The elevator is situated on the inside of a l12° horizontal curve. a) Assuming that the elevator is the only sight restriction on the curve, what is the minimum sight distance along the curve? b) What should be the maximum speed recommended for this curve? c) If the designer wants to have the design speed of 10 mph higher that the recommended speed, what is the distance required for the movement of the elevator?Q- The extra widening required for a two-lane national highway at a horizontal curve of 300 m radius, considering a wheel base of 8m and a design speed of 100kmph is..
- A two-lane minor road intersects a two-lane undivided major road at 90 degrees,forming a four-leg intersection with traffic on the minor road controlled by a yield sign. A building islocated 185ft from the center line of the outside lane of the major road. The design speed on themajor road is 60 mi/h and the design speed on the minor is 35 mi/h. The approach grade on the minorroad is 3%. A passenger car on the minor road would like to cross the major road. Using theAASHTO procedure, determine the minimum distance required that the building must be from thenearest lane on the minor road● Problem 11: A two lane road with design speed 80kmph has horizontal curve of radius 480m. Design the rate of super elevation for mixed traffic. 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 7.5m.The radius of a horizontal curve on an existing highway was field- measured to be 275 m. The on this two-lane pavement highway is 6.8 m wide, and the elevation difference between the inside edge and outside edge of the curve is 0.544 m. The posted speed limit on the road is 100 km/h. Determine the minimum radius of curvature to permit safe operation at the speed limit. 1