Sketch a G+1 residential plan according to Vaastu Shastra and Calculation of Loads as per IS code

Column Design Calculation

1. Load Calculation on Column

we know that the Self–weight of Concrete is around 2400 kg/m3, which is equivalent to 240 kN and the Self–weight of Steel is around 8000 kg/m3.

So, if we assume a column size of 230 mm x 600 mm with 1% steel and 3 meters standard height, the self–weight of the column is around 1000 kg per floor, which is equal to 10 kN.

• Volume of Concrete = 0.23 x 0.45 x 3 =0.310m³
• Weight of Concrete = 0.310 x 2400 = 745.20 kg
• Weight of Steel (1%) in Concrete = 0.310 x 0.01 x 8000 = 24.80 kg
• Total Weight of Column = 745.20 + 24.80 = 770 kg = 7.70KN

While doing column design calculations, we assume the self–weight of columns is between 6 to 10 kN per floor.

2. Beam Load Calculation

We adopt the same method of calculations for beams also.

we assume each meter of the beam has dimensions of 230 mm x 300 mm excluding slab thickness.

Assume each (1m) meter of the beam has dimension

• 230 mm x 300 mm excluding slab.
• Volume of Concrete = 0.23 x 0.30 x 1 =0.069m³
• Weight of Concrete = 0.069 x 2400 = 165.60 kg
• Weight of Steel (2%) in Concrete = 0.069 x 0.02 x 8000 = 11.04 kg
• Total Weight of Column = 165.60 + 11.04 = 176.64 kg/m = 1.76 KN/m

So, the self-weight will be around 2 kN per running meter.

3. Wall Load Calculation

we know that the Density of bricks varies between 1500 to 2000 kg per cubic meter.

For a 6 inch thick Brick wall of 3–meter height and a length of 1 meter,

The load / running meter to be equal to 0.150 x 1 x 3 x 2000 = 900 kg,

which is equivalent to 9 kN/meter.

This method can be adopted for load calculations of Brick per running meter for any brick type using this technique.

For aerated concrete blocks and autoclaved concrete blocks, like Aerocon or Siporex, the weight per cubic meter is between 550 to 700 kg per cubic meter.

if you are using these blocks for construction, the wall loads per running meter can be as low as 4 kN/meter, use of this block can significantly reduce the cost of the project.

4. Slab Load Calculation

Let, Assume the slab has a thickness of 125 mm.

So, the Self–weight of each square meter of the slab would be

= 0.125 x 1 x 2400 = 300 kg which is equivalent to 3 kN.

Now, If we consider the Finishing load to be 1 kN per meter and superimposed live load to be 2 kN per meter.

So, from the above data, we can estimate the slab load to be around 6 to 7 kN per square meter.

5. The Factor of Safety

In the end, after calculating the entire load on a column, do not forget to add in the factor of safety, which is most important for any building design for the safe and convenient performance of the building during its design life duration.

This is important when Load Calculation on Column is done.

As Per IS 456:2000, the factor of safety is 1.5.