Question

28.A metallic rod taller than the building is installed during its construction. Why is it
done so? Give reason.​

Answer 1

Answer:

A metallic rod, taller than the building, is installed in the walls of the building during its construction. One end of the rod is kept out in the air and the other is buried deep in the ground .

The rod provides easy route for the transfer of electric charge to the ground.

Answer 2

Answer:

To safeguard the buildings against the damaging effects of lightning

Explanation:

• A metallic rod taller than the building is often used during its construction. It is used in such a way that the upper end is kept out of the air and the lower end of the rod lies deep in the ground.
• This acts as the lightning conductor or lightning arrestor.

• This rod taken is always taller than the building. That has a pointed top portion. If lightning happens, then it will end up hitting the top portion of it. As a result, it attracts the excess charge or lightning bolt and passes it to the ground thereby protecting the building from damage.
• This conductor conducts the energy into the ground without harming the building.

Hence it is done to protect the building from heavy lightning damage.