Wind Region D
Overview
Region D covers a small part of Western Australia, extending 50 km inland from Pardoo to Carnarvon.
The regional wind speeds (Vr) in Region D range from:
66 m/s (267.6 km/h) for Importance Level 1 (IL1), up to
90 m/s (324.0 km/h) for Importance Level 4 (IL4).
Why this is important
Region D has the highest regional wind speeds in Australia.
Correct classification is critical for safe and compliant building design.
Prevents under-engineering of structures in areas subject to extreme wind loads.
Tips, best practices & troubleshooting
Always confirm the wind region in SMS by accurately pinning the site.
Double-check when quoting in WA coastal areas near Pardoo and Carnarvon.
Refer to AS 1170 standards when in doubt about classification.
Related resources
Request Engineering (Site Check)
Review & updates
Version history:
v1.0 –
v2.0 – 22 August 2025
Article information
Category: Engineering & Site Specifications
Target audience: Estimators, Sales Coordinators, Franchise Users
Business owner:
Version: v2.0
Last reviewed: 22 August 2025