If the formation width is 40 m and sides slope 1 vertical


The central heights of the ground above formation at three sections 100 m apart are 10 m, 12 m, 15 m, and the cross-falls at these sections are respectively 1 in 30, 1 in 40 and 1 in 20. If the formation width is 40 m and sides slope 1 vertical to 2 horizontal, calculate the volume of excavation in the 200-m length:

(a) If the centre-line is straight.

(b) If the centre-line is an arc of 400 m radius

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Civil Engineering: If the formation width is 40 m and sides slope 1 vertical
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