A 12-m wide overpass with the elevation of its bottom to be 227.45m is located across a highway parabolic curve at station 12+230. The parabolic curve has a back tangent grade of -3% that meets another tangent with a grade of +5%. These two tangents intersect at station 12+200 with an elevation of 200m above the datum. The length of the left side of the curve is 240m. a)Determine the length of the right side of the curve. A point A on the curve is located at 12+080 with an elevation of 205.15m. b)Determine the vertical clearance on the left underside of the overpass c)Determine the vertical clearance on the center bottom of the overpass. d)Determine the vertical clearance on the right underside of the overpass.

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Drainage of Pavements

Pavement Drainage holds ample significance, as it prevents the accumulation of water or any liquid on the surface of pavements and ensures proper drainage system. With proper design and gradual slopes provided, the water gets easily removed from the surface into the drains, which are essential during heavy rains and unusual weather conditions keeping it less prone to accidents and increasing the durability of the pavement structure.