Unit conversion

 

Grade of Concrete

M5              =  1 : 4 : 8

M10            = 1 : 3 : 6

M15            = 1 : 2 : 4

M20            = 1 : 1.5 : 3

M25            = 1 : 1 : 2

M30            = 1 : 0.75 : 1.5

Here ratio like that

Cement  : Sand : Aggregates.

 

Standard Conversion factors

1 Inch         = 25.4 mm

1 Foot         = 0.3048 M

1 Yard         = 0.9144 M

1 Meter      = 3.28 ft

1 mm          = 0.394 Inch

1 Mile         = 1.6093 Km

1 Newton   = 0.10 Kg

Weight of steel per meter

6 mm          = 0.222 Kg

8 mm          = 0.395 Kg

10 mm        = 0.616 Kg

12 mm        = 0.888 Kg

16 mm        =1.578 Kg

20 mm        = 2.466 Kg

25 mm        = 3.853 Kg

We can also calculate the weight of Steel with that formula:-

(D)² / 162

D = diameter of steel bar

 

Weight of engineering material

Bitumen     = 1340 Kg/m³

Cement      = 1440 Kg/m³

Cast Iron    = 7650 Kg/m³

Steel           = 7850 Kg/m³

Ice               = 913 Kg/m³

Petrol         = 690 Kg/m³