Meteodyn EC1 v3.2.2: Monaco Added, Security Upgraded

Meteodyn EC1 v3.2.2 is live as of 12 March 2026. This release adds Monaco to the calculation perimeter and migrates the application to .NET 8, patching multiple security vulnerabilities.

Why Eurocode 1 Wind Load Calculations Are Challenging

Structural design for wind actions is governed by EN 1991-1-4 (Eurocode 1, “Actions on structures — Wind actions”). For every project, the structural engineer must determine the reference dynamic wind pressure qp from three site-specific parameters:

• The basic wind velocity Vb, extracted from the regulatory maps of the National Annex.
• The roughness length z₀, reflecting the influence of surrounding obstacles (dense urban areas, vegetation, open terrain) on the wind profile.
• The orography coefficient co, which quantifies the wind speed-up caused by local topography: hills, cliffs, escarpments.

In practice, obtaining each of these parameters manually is time-consuming and error-prone. Reading Vb from printed maps, visually estimating z₀ against a five-category terrain table, and computing co from topographic contours all require significant effort, and remain open to interpretation.

Meteodyn EC1: Automated Dynamic Wind Pressure Calculation

Meteodyn EC1 is an online application developed by Meteodyn, a wind engineering specialist with over 20 years of expertise. It fully automates the Eurocode 1 wind load calculation workflow for France, its overseas territories, and Belgium.

How It Works

The user enters the project address (or GPS coordinates) and the building height. The application then automatically computes:

• Vb from the official maps of the French or Belgian National Annex.
• z₀, sector by sector, from the CORINE Land Cover map (Copernicus programme, European Union).
• co from NASA SRTM elevation data (3 arc-second resolution), using procedure 1 of the French National Annex (equation 4.13-NA).

Results, both final values and intermediate parameters, are displayed on an interactive map, with the most critical wind direction highlighted. A full A4 PDF report documents all calculation assumptions, ready to include in a technical file.

In seconds, Meteodyn EC1 delivers a regulation-compliant, reproducible, fully documented result, replacing a manual process that typically takes several hours.

What’s New in Version 3.2.2

Monaco Added to the Calculation Perimeter

The Principality of Monaco is now covered by Meteodyn EC1. Because current regulatory maps do not provide sufficient resolution to determine with certainty whether French regulations include or exclude Monaco, Meteodyn has chosen to integrate it by continuity with the French cartographic coverage. This approach guarantees consistent results for projects located in or immediately adjacent to the principality.

Migration to .NET 8: Hardened Security

This release patches several vulnerabilities identified in .NET 6 by migrating the application to .NET 8. The transition is entirely transparent for users: no interface changes, no impact on calculation results.

Coverage: Territories Supported

Meteodyn EC1 covers all territories subject to the French and Belgian National Annexes of Eurocode 1:

• Belgium

Additional territories under study.

Key Features of Meteodyn EC1

• PDF export: complete A4 report with all calculation assumptions, ready for technical documentation.
• Ground-level calculation: the 10 m height limit has been removed — wind speed can now be estimated down to ground level for low-rise construction.
• Orography diagram: the co coefficient is illustrated with a dedicated chart showing the height of the point of interest and the relative elevation of the site (equation 4.13-NA).
• Directional results on map: all wind directions evaluated, most unfavourable direction highlighted visually.

Try Meteodyn EC1

Access the online application or request a trial to test Meteodyn EC1 on your own projects.

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