### ● ** 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.

## Steel bar |

## 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.

## 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

## 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

### 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:-**

## 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:-

## 10mm steel bar |