25CM THICK 1.5M INNER DIA AND 6M DEPTH OF A SOAK WELL.HOW MUCH CONSTRUCTION MATERIALS REQUIRE.

25cm thick 1.5m inner dia and 6m depth of a soak well.How much construction materials require?Ratio 1:6

Answer:
Brick work needed=1[3.14x{(1.5+2)/2}]x0.25x6=8.24 cum,
1+6=7,
Dry morter=8.24x35%=2.884cum, Brick needed=8.24/(0.254x0.127x0.076)=3361 nos, sand needed=2.884(6/7)=2.47cum,
Cement needed=(2.8841)/(7x0.0347)=11.87bags.