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Z251 Ina highway. I in 50 elevation gradient meets a | in 400 tall gradi- Curves '573 Andsince of 1:00 in and at a reduced level of 150.00 m. If the sight distance be determine the length of the vertical curve and the reduced levels of the tangent the apex of the curve using 30 m chain. Assume the eye level of driver to be before the road surface and the height of the obstacle to be 0. I m. puton Refer to Fig. 12.64. * 91% F - 92% E Fig. 12.64