Three independent lines of levels are run from BM1 to BM2. Route A is 6 km long, route B is 4 km long and route C is 8 km long. By route A, BM2 is 82.27 m above BM1, by route B, BM2 is 82.40 m above BM1 and by route C, BM2 is 82.10 m above BM1. 20. Compute the probable difference in elevation between BM1 and BM2. a. 82.29 m c. 82.56 m b. 82.95 m d. 82.63 m

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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.