By which materials shank of a spur construct, Civil Engineering

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Q. By which Materials Shank of a spur construct?

Shank of a spur is constructed of sand core and its exposed faces are protected by stone pitching. The attack at nose is very heavy and hence the nose may be constructed wholly in stone. Alternatively if attack is heavy all over the spur length or if it is easier and not very expensive to construct the spur wholly in stone, such a construction may be preferred. The apron should be in stone of the same size as used for slope protection of guide bunds.

Permeable spurs are constructed by driving wooden bally piles to achieve penetration below riverbed of 6.0 to 9.2m. The ballies are normally 22.5 to 37.5 cm in diameter. Mattress or stone carpet is provided on river bed to prevent scour.


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