Question

Subject Test
Note:
You are attempting question 5 out of 12
In a tile drainage system, the drains are laid with their centre 1.5m below the ground
level. The impervious layer is 9 m below the ground level and the average annual daily
rainfall in the area is 80cm. If 1% of thus rainfall is to be drained in 24 hours to keep the
highest position of the water table Im below the ground level. Find the spacing of the
drains.
a) 0.68 m
b) 0.23 m
c) 0.48 m
d) 0.39 m​

Answer 1

Answer:

a) 0.68 m

मुझे लगता है की यह सही उत्तर हैं

Answer 2

the spacing of the 0.68 meter