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Tile drains have to be installed in an agricultural land having soil permeability of $2.3 \times 10^{-3} \mathrm{~mm} \mathrm{~s}^{-1}$. An impermeable stratum exists at $3.2 \mathrm{~m}$ below the land surface, and it is desired to keep the water level at least $1.0 \mathrm{~m}$ below the land surface. The average discharge of the drainage system is $2.0 \mathrm{~mm}$ day $^{-1}$. If the tile drains are planned to be placed at $1.5 \mathrm{~m}$ below the land surface, the drain spacing in $\mathrm{m}$, assuming the equivalent depth to be the same as the tile depth, is
(A) 10.6
(B) 12.4
(C) 13.9
(D) 19.7


Question ID - 157389 | Toppr Answer

Tile drains have to be installed in an agricultural land having soil permeability of $2.3 \times 10^{-3} \mathrm{~mm} \mathrm{~s}^{-1}$. An impermeable stratum exists at $3.2 \mathrm{~m}$ below the land surface, and it is desired to keep the water level at least $1.0 \mathrm{~m}$ below the land surface. The average discharge of the drainage system is $2.0 \mathrm{~mm}$ day $^{-1}$. If the tile drains are planned to be placed at $1.5 \mathrm{~m}$ below the land surface, the drain spacing in $\mathrm{m}$, assuming the equivalent depth to be the same as the tile depth, is
(A) 10.6
(B) 12.4
(C) 13.9
(D) 19.7

1 Answer - 5876 Votes

3537

Answer Key : (A,B,C,D) -

(A) 10.6
(B) 12.4
(C) 13.9
(D) 19.7



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