SSC JE Civil Engineering 25-Sep-2019 Shift 1 Solved Paper

Question : 146 of 200

Marks: +1, -0

A trapezoidal canal of bottom width B, depth d with a slope z : 1 (horizontal : vertical) is formed in cutting for a length of L. It is proposed to provide lining to the canal. The surface area of lining the canal is:

$L (B +2d√{ z^2+ 1})$
$2L (B +2d√{ z^2+ 1})$
$L (B +2d√{ z + 1})$
$L(B + 2 z d)$

Validate

Solution:

A trapezoidal canal of bottom width B, flow depth d with a side slope z:l (horizontal: vertical) is formed in cutting for a length of L. It is proposed to provide lining to the canal.

The surface area of lining the canal is
= Length × Wetted Parimeter

L (B +2d√{ z^2+ 1})

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