Answer Posted / i.rajamohamed. p.s.y.e.college

M20 ratio is 1:1.5:3( TAKE 20mm aggregate)

(i)add ratio= 1+1.5+3= 5.5

(a) volume of aggregate = 1\7*1.57 = 0.22m3
(b) volume of sand =1.5/7*1.57= 0.33m3
(c) volume of cement =3/7*1.57 = 0.67m3*1440=964 kg.

(note: 1.57 for 1m3 box)

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