# STEEL WEIGHT CALCULATION

### STEEL QUANTITY:

• The weight of the bar in kg/meter should be calculated as (d2 ÷ 162) where‘d’ is the diameter of the bar in mm.
• ‘L’ for column main steel in footing should be considered as a minimum of 30cm/as specified.
• For bent bar add 0.42d in straight length of the bar where‘d’ is the clear depth of beam/slab.
• For the cantilever, beam anchorage length for main steel should be 69D or the length of the cantilever whichever is greater.

#### Weight per meter of different dia of steel bar.

• 6    = 0.222 kg per meter
• 8    = 0.395 kg per meter
• 10 = 0.617 kg per meter
• 12 = 0.888 kg per meter
• 16 = 1.58 kg per meter
• 20 = 2.469 kg per meter

With help of this formula, you can find any type of dia bar weight

(d2 ÷ 162)

Where

D = diameter of bar in mm.

### Calculate the number of stirrups in the column or beam

• Number of Stirrups = (clear span/spacing) + 1
• The lap length in the column should be 45D

Where

D = diameter of bar in mm

• Lap length in beam/slab should be 69D

Where

D = diameter of bar in mm

For example- let’s Calculate 12mm Dia Bar Weight For 2 Metre Length with help of this Formula (d2 ÷ 162).

(12×12)/162 X 2  ( Dia x Dia)/162x Lenght of bars

144/162*2

The total bar weight is 1.7777 KG for 2 Metre Length.