Compute the minimum length of curve for Problem 25.6. (Assume h1 = 3.50 ft and h2 = 2 ft.), assume 50 mph.   Problem 25.6 is: Tabulate station elevations for an equal-tangent parabolic vertical curve with the characteristics: a 455-ft curve, grades of g1 = +2.00% and g2 = -1.50%, VPI at station 78 + 60 and elevation 7855.35 ft, stakeout at total stations. Calculate the station and elevation at the high point of the curve.

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Q: 19. What is the stationing (ft) of the EVC?

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Q: Just do question 2

A: The "A" is the algebraic difference of the grades. As shown below.

Q: You have designed a vertical crest curve which joins a +3% grade and a -4% grade. The design speed…

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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.