Gust Factor Calculator

Engineered for Accuracy

BNBC 2020 Wind Load (Strict)

Building Length X (m)

Building Length Y (m)

Building Height (m)

Wind Direction

Location (Vb)

Occupancy Category

Exposure Category

Structure Type (Period T)

Structure Type (Kd)

Damping Ratio (β)

Topographic Factor (Kzt)

⚠️ Disclaimer & Scope of Use

This calculator applies BNBC 2020 Method 2: Analytical Procedure for wind load design on regular-shaped buildings with flat roofs using standard MWFRS.

It is NOT applicable to:

Irregular building shapes (L, T, C plans, vertical irregularities)
Structures with complex aerodynamic responses (across-wind, vortex shedding, galloping, flutter, channeling, buffeting)
Non-flat roof systems (pitched, arched, domed, etc.)

User Responsibility: For excluded cases, BNBC requires Method 3 (Wind Tunnel Procedure) or recognized literature. Users must ensure their building geometry and site conditions comply before using this tool.

Request a Quotation

Gust Factor Calculator

BNBC 2020 Wind Load (Strict)