weight calculation of steel bar and its formula

 weight calculation of Steel bar and how to calculate the weight of Steel bar of different size like 8 mm 10 mm 12 mm 16 mm 20 mm 25 mm 32 mm and 50 mm etc and weight calculation of  steel bar

description :- calculate the weight of Steel bar  and when  we use reinforcement of concrete there is  a steel bar require for construction .you know that different size of Steel bar supply by supplier having length 12 metre, how we calculate total length of Steel bar in kilogram.

What is admixture of concrete and it types

Why need calculation  of weight of Steel bar:-You know that  Steel bar having length 12 metre of different size like 8 mm, 10 mm, 12 mm, 16 mm, 20 mm, 25 mm, 32 mm, 40 mm, 45 mm and 50 mm size.  so we have to convert length of Steel bar in weight in kilogram.

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Steel bar

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Steel bar

●uses:- you know that Steel bar used  in building construction work and civil engineering like formation of dam, culvert ,Bridge formation, pillar formation etc.

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Steel bar

● size of Steel bar and number of Steel bar in one bundle:-

Dia.       Number  Length 

8mm—–10nos—–12m

10mm—-7nos——–12m

12mm—-5nos ——–12m

 16mm——3nos—–12m

20mm——2nos——12m

25mm——1nos——12m

32mm——1nos——12m

40mm——-1nos—–12m

45mm——1nos——12m

50mm——1nos——12m

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Steel weight calculation formula

how to calculate weight of Steel bar:-the calculation of weight of Steel bar in kg per metre, there is a unique formula and easy calculation of different size of Steel bar having length 12 metres

Weight =(Dia)*2/162×Length
W =( D)*2 L/162 kg

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Steel weight calculation formula

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derivation of this formula:- we have to calculate weight of Steel bar  in Kilogram per metre so

Weight=volume of steel × density of steel

Weight= cross sectional area×Length×densit

 W =πD*2/4×L×density    W=weight of steel      π=3.14     D= diameter of Steel bar in mm    L= length of Steel bar =1m    Density=7850kg/m3

Putting all the value we get

          Weight=3.14×Dmm*2/4×1m×7850kg/m3

Now we have to to convert millimetre square into metre square

1mm*2 = 1/1000m×1/1000m =1/1000000m*2 ( * square)

So weight =3.14×D m2/4000000×1m×7850kg/m3

Weight =D*2 ×26649/4000000 kg

 Weight= D*2×0.006162 kg

It can be written as follow

  Weight= D*2/1/0.006162 kg

 When we divide 1/0.006162 we get 162 so

Weight =D*2 ×L/162 kg/m

 Example 1:-

Calculate the weight of 8 mm Steel bar having length 12 metre and 10 number of Steel in one bundle:-

 calculate the weight of 8 mm Steel bar
Calculate the weight of Steel bar

8mm steel bar

● weight =D2×L/162

1)for 1m

Weight=8×8×1÷162=0.39kg

2) for 12m

W=8×8×12÷162=4.74kg

3) for 1bundle

=8×8×12×10÷162=47.407kg

●Example 2

● how to calculate weight of 10 mm size Steel bar having 12 metre length  and 7 number of Steel in one bundle:-

How to calculate weight of 10 mm Steel bar
Calculate the weight of Steel bar

10mm steel bar

●weight calculation:-

1) for 1m weight=10×10×1÷162=0.617 kg

2) for 12m W=10×10×12÷162=7.407kg

3) for 1bundle =10×10×12×7÷162=51.85kg

●Example 3

● how to calculate weight of 12 mm size Steel bar having length 12 metre and 5 number of steel bar in one bundle:-

Calculate the weight of 12 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1)for 1m =12×12×1÷162=0.889kg

2)for 12m =12×12×12÷162=10.667 kg

3) for1bundle

=12×12×12×5÷162=53.333kg

●Example 4

how to calculate weight of size of 16 mm Steel bar having 12 m length and 3 number of steel bar in one bundle

Calculate the weight of 16 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1) for 1m W=16×16×1÷162=1.58kg

2) for 12m W=16×16×12÷162=18.96kg

3) for 1 bundle

=16×16×12×3÷162=56.889kg

●Example5:-

how to calculate weight  of size of 20 mm Steel bar having length 12 metre and 2 number of steel bar in one bundle:-

Calculate the weight of 20 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1) for 1m  W =20×20×1÷162=2.469kg

2) for 12m W=20×20×12÷162=29.629kg

3) for 1 bundle =20×20×12×2÷162=59.259kg

●Example 6:-

how to calculate weight of Steel bar of size 25 mm having length 12 metre:-

Weight of 25 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1) for 1m W=25×25×1÷162=3.858kg

2) for 12m W=25×25×12÷162=46.296kg

●Example7

● how to calculate weight of 32 mm size of Steel bar having length 12 metre:-

Calculate the weight of 32 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1) for 1m W=32×32×1÷162=6.32kg

2) for 12m W=32×32×12÷162=75.85kg

●Example 8:-● how to calculate weight of Steel bar size of 40 mm having length 12 metre:-

Calculate the weight of 40 mm Steel bar
Calculate the weight of Steel bar

● weight calculation:-

1) for 1m W=40×40×1÷162=9.876kg

2) for 12 m W=40×40×12÷162=118.518kg

●Example 9

● how to calculate weight of Steel bar of size 45 mm having length 12 metre

● weight calculation:-

1) for 1m W=45×45×1÷162=12.5kg

2) for 12m W= 45×45×12÷162=150kg

●Example 10

● how to calculate weight of Steel bar size 50 mm having length 12 metre

● weight calculation:-

1) for 1m W =50×50×1÷162=15.432kg

2) for 12m W=50×50×12÷162=185.185kg

How to calculate weight of different size of Steel bar  in Kilogram per foot (Kg/foot)

● in foot calculation

 formula of weight =D*2/533×L

                                    Kg/Foot

 ●Note:-

D= diameter of Steel bar in millimetre
L= length of Steel bar in foot=39 foot
Density= 222 kg/ft3

●Derivation of formula:-

Weight=Volume×density

W=πD*2/4×L×density
W=3.14×Dmm*2/4×1ft×222kg/ft3
1mm*2.  =1/304.80×304.80 ft*2

W=(3.14×Dft×1ft/4×304.80×304.80)×222kg/ft3

W = D*2 ×0.001878 kg/foot

Weight=D*2/1/0.001878 kg/foot

Weight =D*2/533 ×L kg/ft

●Example 1:-

● how to calculate weight of Steel bar of 8 mm size having length 39 foot and 10 number of steel bar in one bundle-

Calculate weight of 8 mm Steel bar kg/ft
Calculate the weight of Steel bar

● weight calculation:-

1) for 1foot

W=8×8×1÷533=0.12 kg

2) for 39 ft W=8×8×39÷533=4.68kg

3) for 1 bundle W= 8×8×39×10÷533=46.80 kg

●Example2

● how to calculate weight of Steel bar having size 10 mm and 39 feet long having 7 number of steel bar in one bundle

●solve:-

1) for 1foot W=10×10×1÷533=0.1876kg

2) for 39 feet W=10×10×39÷533=7.317kg

3)for 1bundle W=10×10×39×7÷533=51.219kg

●Example3

● how to calculate weight  of Steel bar having size 12 mm and 39 feet long and 5 number of steel bar in one bundle:-

● solve:-

1) For 1foot W=12×12×1÷533=0.270kg

2) For 39 feet W= 12×12×39÷533=10.53 kg

3) For 1 bundle W=12×12×39×5÷533=52.68kg

●Example 4

how to calculate weight of Steel bar 16 mm size having length 39 feet and 3 number of steel bar present in one bundle

●solve:-

1) for 1foot W=16×16×1÷533=0.80kg

2) for 39 feet W=16×16×39÷533=18.73kg

3) for 1bundle W=16×16×39×3÷533=56.195kg

●Example5

● how to calculate the weight of Steel bar size 20 mm having length 39 feet and 2 piece of Steel bar in one bundle

●Solve :-

1) for 1foot W=20×20×1÷533=0.75 kg

2) for 39 feet W=20×20×39÷533=29.268kg

3) for 1bundle W=20×20×39×2÷533=58.536kg

●Now your turn:- any quiry , questions about this topics calculation of different size of Steel bar, please 🙂🙂comment share and ask questions, your questions are welcome 🙏in this blog

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