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Structural Design Specifications - Engineering

Q1:

For nominal mix concrete M 15, the required weight of fine and coarse aggregates is 350 kg and the volume of water is

A 30 litres

B 32 litres

C 34 litres

D 45 litres

ANS:B - 32 litres

Rit ans is 35 liter Fine agg + coarse agg = 350.

Ratio = 1 : 2 : 4.
Sum of aggregates = 6,
Weight of cement = 350/6 = 58.33,

For nominal M15 mix water cement ratio = 0.60 plain concrete and RCC 0.50.

Water = 58.33 X 0.60= 35 liter and RCC liy 58.33 x 0.5=30 liter and M15 330kg 32 liter recommended for is code 456 2000 page no.23.