Following are the steps to calculate the quantity of steel for RCC slab

1. Prepare a **bar bending schedule** in order to classify different shapes of bars (bent up bar, straight anchor bar, eos bar, curtail bar etc) and diameters.

2. List down all the **shapes of bars** from the drawing.

3. Count the **number of bars** of each of those shapes.

4. Then calculate the cutting length of each of those bars.

**Cutting length of bar =*** (length of the member **–** deduction for cover on both sides) **+ **development length.*

5. Then calculate the unit weight of each dia bars by the following formula:

**W = d^2/162**

Where d is the dia in mm and weight (w) in kg.

6. Then calculate weight of rebar

**Weight of rebar**= ** no of bars **x

**x**

*cutting length*

*unit weight*7. Add all the **weight** to get the total steel quantity.

**NOTE** – **1**. Minimum % of steel as per Indian standard are:

1. Beam (Teinsion reinforcement):

As = 0.85bd/fy of gross cross-section area.

2. Slab – 0.12% of total area

3. Column – 0.8% of cs area

**2**. Maximum % steel as per Indian standard are:

• Beam – 4 % of cross-section area.

• Slab – 4% of cross-section area.

• column — 6% of cross-section area.

**3**. **. Development Length** is usually specified in the drawings, but if not thenyou can calculate it as,

D.L = Depth – 2 times cover

**4**. **Binding wire** = 10 grams per kg of reinforcement.

**5. No. of stirrups** = (length of member – 2 x cover ) / spacing + 1

Super for civil work

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