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

2.4 m above the hydraulic gradient
5.0 above the hydraulic gradient
6.4 m above the hydraulic gradient
10.0 m above the hydraulic gradient

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Hydraulics & Fluid Mechanics
Fluid is a substance that

always expands until it fills any container
cannot be subjected to shear forces
cannot remain at rest under action of any shear force
has the same shear stress.at a point regardless of its motion

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