Question

The relation between intensity of wind pressure P and Velocity V is taken as
1. P∝ V
2. P ∝  V^1/2
3. \(P \propto \frac{1}{V}\)
4. P ∝ V²

Answer 1

Correct Answer - Option 4 : P ∝ V²

Explanation:

The code divides the country into six zones for wind velocity calculations.

Design wind velocity in m/sec at a height z (Vz), from basic wind speed Vb in m/s at the height of z m at the locality is given by:

Vz = k1 × k2 × k3 × Vb

k1 = probability or risk factor

k2 = terrain, height, and structure size factor

k3 = topography factor

Pz = design wind pressure in N/m at a height, z

Pz = 0.6 × Vz2

So,

P ∝  V2