Bar bending schedule for footing provides you information on the total quantity of steel rods, length of steel rods required and Cutting length of a steel rod at the site. So let us see how we can do it.

Here you can see below the reinforcement detail of an isolated footing. The total length and **width of a column are 2000 millimeters** and **1500 millimeters** respectively. The **height of footing is 300 millimeters**

Now let us calculate bar bending schedule for footing step by step.

**Given,**

Diameter of Both bars in X direction and Y direction are** 12 mm.**

Clear cover of the footing is **50 mm.**

C/C center to center spacing of steel rods is **150 mm.**

## Reinforcement detail for bar bending schedule for footing

## Calculation of **Bar bending schedule for footing**

### Step – 1 Calculate the effective length of steel rod in X and Y direction using the formula given below.

Effective length = Total length – both sides covers

**Calculation**

Effective length along X direction = 2000 – (2 x 500) = 1900 mm

Effective length along Y direction = 1500 – (2 x 500) = 1400 mm

### Step-2 Calculate numbers of bars by using formula given below.

Use **Spanning of steel rod **as mentioned above.

No. of bars along (X) direction = (1400/150) + 1 = 10 nos.

No. of bars along (Y) direction = (1900/150) + 1 = 14 nos.

### Step-3 Calculate Cutting length of Steel Bars using formula below

**Cutting length of bar along (X) direction:**

(Effective length + bends) – bend deductions

[1900 + 2(300 – 50 – 50)] – (2 x 2 x 2) = 2252 mm or 2.25 meter**Cutting length of bar along (Y) direction:**

(Effective length + bends) – bend deductions

[1400 + 2(300 – 50 – 50)] – (2 x 2 x 2) = 1752 mm or 1.75 meter### Bend deduction is calculated as given below

**Deduction of the length of bars due to bending at a different angle:**

45 Degree = 1d

90 Degree = 2d

135 Degree = 3d

Where d is the diameter of steel rods.

### Step-4 Calculate total length of steel rods

**Along (X) direction** = No. of bars x Length of one bars = 2.25 x 10 = 22.5 meter

**Along (Y) direction** = No. of bars x Length of one bars = 1.75 x 14 = 24.5 meter

### Step- 5 Calculate the unit weight of steel rod using formula

**You can read here for how to calculate unit weight of steel rod**

### Step-6 Calculate total weight of steel rod

**Total Weight of steel** = **Unit weight** x **Total Length of steel rod**

Add **5% of wastage** of steel to get actual total weight of steel bars.

## Summary of Bar bending schedule for footing in Table

Hence in this way we can calculate bar bending schedule for footing.

I hope this article remains helpful for you.

Happy Learning – Civil Concept

**Contributed by,**

**Civil Engineer – Ranjeet Sahani**

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