Irrigation Engineering
Borrow pits should preferably be located in

Field on the left side of the canal
Field on the right side of the canal
Central half width of the section of the canal
Fields on both sides of the canal

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Irrigation Engineering
If A is the area of the surface, x̅ is the depth of its C.G. from the surface of the water and ω is the density of water, then

Depth of the centre of pressure is 2/3H vertically below the surface
All listed here
Total pressure on the surface is equal to ωx̅
Depth of the point at which total pressure acts is equal to its moment of inertia divided by Ax̅

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