Important points


  • Weight of 1 cement bag = 50 kg


  • Volume of 1 bag cement = 0.035 m3 (cubic meter)

                                                     = 35 litre (0.0347 meter cube)

  • Unit weight of steel = 7850 kg/m3 = 78.5 qunital/m3


  • Weight of cement in 1 m3  volume = 28.8 bags = 1440 kg


  • Cement grade and its proportion of mix.


Grade
Proportion
M 5
1:5:10
M 7.5
1:4:8
M 10
1:3:6
M 15
1:2:4
M 20
1:1.5:3
M 25
1:1:2

  • Use waterproofing material ‘Impermo’ or ‘Dr. Fix It’ chemical powder.


  • 1 m3  =  500 bricks


  • Size of 1 brick (without mortar) = 19 cm x 19 cm x 19 cm


  • Size of 1 brick (with mortar) = 20 cm x 20 cm x 20 cm


  • 1 m3 = 30 bags of cement for practical purpose.


  • Volume of cement (OPC)  1 m3 = 1440 kg


  • Binding wire – quantity of binding wire depends upon nature of reinforcement for every 10 sq.m. slab approxi. 2.7 kg of 18 gauge soft black iron wire is required.


  • 1 quintal = 100 kg.


  • 1 m3 of wet volume of concrete = 1. 54 m3 of dry volume.


  • 1 m3 of wet volume of mortar = 1.33 m3 of dry volume.