The wing walls constructed to the parallel of the the abutments at both at their ends is called –
(a) Straight wing wall, (b) return wing wall, (c) splayed wing wall, (d) none of these.
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Answer:
return wing wall
Explanation:
Return wing walls: used where banks are high and hard or firm. Their top width is 1.5 m and face is vertical and back battered 1 in 4.[2] Scour can be a problem for wing walls and abutments both, as the water in the stream erodes the supporting soil.[
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