In highway design, curves are deliberately provided even on a straight route to break the monotony in driving which may cause serious accidents. True False
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- When designing a highway curve it is required that cars traveling at a constant speed of 33 m/s must not have an acceleration that exceeds 5 m/s2. Determine the minimum radius of curvature in meters.On a railroad, a +0.8% grade meets -0.4% grade at station 2+700 and at elevation 30 m. The maximum allowable change in grade per station is 0.2%. Determine the length of the curve, in meters.when designing a highway curve is it required that cars at a constant speed of 33 m/s must not have an accelaration that exceeds 5 m/s^2.determine the tangential component of accelaration
- A horizontal curve on a two-lane highway has its PC at station 123+70 and its PI at station 130+90. The curve has a super elevation of 0.06ft/ft and is designed for 70mi/h. SOLVE FOR horizontal alignmentFind out the length of the transition cruve for a horizontal curve. The horizontal curve external distance 20 m and central angle 4=30°. The width of the pavement 7.3m. Extra widening 0.7m. design. Speed 30 Km/h. Superelevation = 7%.The centerline of two parallel tracks is connected by a reversed curve. The angle of intersection of the first curve is 15° and the distance between parallel tracks is 30m. If the radius of the second curve is 300m.Compute the radius of the first curve.
- In a railroad layout, the centerline of two parallel tracks are connected with a reversed curve of unequal radii. The central angle of the first curve is 16° and the distance between the parallel tracks is 27.6 m. Stationing of the PC is 15 + 420 and the radius of the second curve is 290 m. Compute: a. The length of the long chord from the PC to the PTb. The radius of the first curvec. The stationing of the PTThe super elevation of the horizontal curve is 0.12 m/m. A car can travel a maximum speed of 80 kph. Find the coefficient of friction between the tire and the road if the radius is 70 m. a. 0.52 b. 0.62 c. 0.72 d. 0.42Find the characteristics for horizontal curve at glacial region (in feet) in case of maximum value of super-elevation if the design speed 100 km/hr, A-65.10, PT=236+68.14 (Assume any important values)
- A highway curve with a radius of 150 meters is banked so that there is no lateral pressure (friction) on the wheels of a car at a speed of 50 km/hr. A car weighing 16.50 KN with tread G = 1.50 meters and height h = 0.70 meters travels around the curve at 100 km/hr. What is the safe angle of inclination of the banked highway curveGiven: Design speed = 100 kph G1 = 3% ; G2 = -2% Ss = 110 m Sp = 550 m Determine the length of vertical curve.The perpendicular distance between two parallel tangents of a reversed curve is 7.5 m and the length of long chord is equal to 65 m. Compute the common radius of the reversed curve.