HORIZONTAL ALIGNMENT IS THE CIRCULAR CURVE CREATED BY TWO OR MORE TANGENT LINES IN A PARTICULAR PATH. THE TOP VIEW OF A ROADWAY/RAILWAY. HOW STRAIGHT THE ROADWAY/RAILWAY SECTION IS?
VERTICAL ALIGNMENT THE CIRCULAR SLOPE CREATED BY THE GRADIENT OF A CERTAIN LAND. THE ELEVATION DIAGRAM OF A TERRAIN. HOW FLAT THE ROADWAY/RAILWAY SECTION IS?
Super-elevation refers to the banking of a roadway at a curve to counteract the effects of centrifugal force on vehicles.
When designing super-elevation, several factors are taken into account, including the speed of the vehicles, the radius of the curve, and the friction between the tires and the road.
The radius of a horizontal circular curve is 100m the design speed is 50 km/h and the design coefficient of lateral friction is 0.15. Calculate the superelevation required if full lateral friction is assumed to develop. Ans. e= 0.0466m or 4.66%
Calculate full superelevation for a circular road having a radius of 300m and it is 8m wider. Take 50 kph as the speed of the vehicle.