RCC slab (1:2:4) is to be provided as a room having internal dimensions 4m x 3.5m. Wall thickness = 30 cm, projection of slab 20 cm. Assume percentage of steel = 1%. Find the quantity of steel in kg.

Ans.

 Data given :

Room internal size = 4m x 3.5m

Wall thickness = 30 cm

Slab projection = 20 cm

Steel = 1%



Assuming slab thickness as 12 cm.

Volume of slab = 5 x 4 x (12/100)

                          = 2.4 Cu.m.

Quantity of steel = 2.4 x (1/100)

                            = 0.024 Cu.m.

1 cu.m. of steel  = 78.5 qunital

Therefor, Quantity of steel in quintal

= 0.024 x 78.5

= 1.88 quintals

i.e 188 kg