To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than

[Dnyan Deshmukh]

To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than



(a) 2.4 m above the hydraulic gradient


(b) 6.4 m above the hydraulic gradient


(c) 10.0 m above the hydraulic gradient


(d) 5.0 above the hydraulic gradient

(e) none of the above.



The correct Answer Is
(b) 6.4 m above the hydraulic gradient