HOW TO FIND UNIT WEIGHT OF STEEL BARS

HOW TO FIND WEIGHT OF STEEL BARS




After designing of Rcc elements we know only diameter of bars and numbers of bars
But we don’t know weight of steel bars
Now we are discussed to how find weight of steel bars
Weight of steel bars are required to preparation of estimation

Example 1

Formula ,   weight = d2/162
                              D=diameter of bar in mm
We know the length of bars from the bar bending schedule
For example,   assume length of steel bar = 40 feet (12m)
                                              Diameter of bar =8 mm f
                                                                       W =82/162
                                                                            =0.395 kg/m
Weight of 8 mm  1 meter length bar            =0.395 kg
                                                    So  ,                  =12 x 0.395
                                                                             =4.75 kg
Weight of 8mm f diameter 1 meter length bar =4.95 kg
 The above   process same for all diameters of bars
Below I am provide many diameter bars unit weight
Keep in mind -------length of bar L in meter
                        ------- diameter of bar D in mm


Diameter of bar f in mm
Weight of bar per meter length in kg
6 mm f
0.222 kg
8 mm f
0.395 kg
10 mm f
0.617 kg
12 mm f
0.888 kg
16 mm f
1.580 kg
20 mm f
2.469 kg
22 mm f
2.987 kg


Example 2

How to calculate  weight of 20mm f , 10 meter length bar
For using above table
Weight  of 20 mm diameter bar for 1 meter length =2.467 kg
So                                                                                       =10 x 2.467
                                                                                           = 24.67 kg
Example 3

If the length is in foot then how to calculate weight of steel bar
Formula  , weight =D2 L/533
10mm f bar =0.188 kg/ft
12 mm f bar=0.270 kg/ft
16 mm f bar=0.480 kg/ft
20 mm f bar=0.750 kg/ft
22 mm f bar=1.175 kg/ft


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