Wind Loading Calculator Eurocode 4

Eurocode 4 refers to Eurocode 1 (EN 1991-1-4) for wind load calculations in composite structures:

\[ F_w = c_s c_d \times c_f \times q_p(z_e) \times A_{ref} \]

Wind Zone:

Terrain Category:

Building Height:

Building Width:

Building Depth:

Wind Force (Fw):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is Eurocode 4 Wind Loading?

Eurocode 4 (EN 1994) for composite steel and concrete structures refers to Eurocode 1 (EN 1991-1-4) for wind load calculations. This calculator provides simplified wind force estimation for composite structures according to these standards.

2. How Does the Calculator Work?

The calculator uses the basic wind load formula from Eurocode 1:

\[ F_w = c_s c_d \times c_f \times q_p(z_e) \times A_{ref} \]

Where:

\( F_w \) — Wind force (N)
\( c_s c_d \) — Structural factor (simplified to 1 in this calculator)
\( c_f \) — Force coefficient
\( q_p(z_e) \) — Peak velocity pressure at reference height
\( A_{ref} \) — Reference area

Explanation: The calculation considers wind zone, terrain category, building dimensions, and height to estimate the wind force on the structure.

3. Importance of Wind Load Calculation

Details: Accurate wind load estimation is crucial for designing composite structures to ensure stability and safety under wind actions, preventing excessive vibrations or structural failure.

4. Using the Calculator

Tips: Select the appropriate wind zone and terrain category, enter building dimensions in meters. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why does Eurocode 4 refer to Eurocode 1 for wind loads?
A: Eurocode 4 focuses on composite design while Eurocode 1 provides general wind load provisions applicable to all structures.

Q2: What are typical wind zones in Europe?
A: Zone I (inland) has lower wind speeds than Zone II (coastal) and Zone III (offshore). National annexes provide specific values.

Q3: How does terrain category affect wind loads?
A: Rough terrain (higher category numbers) creates more friction, reducing wind speed near the ground compared to open terrain.

Q4: What are limitations of this simplified calculator?
A: It doesn't account for complex shapes, dynamic effects, or directional factors. For final design, consult full Eurocode procedures.

Q5: How important is wind load for composite structures?
A: Very important, especially for tall buildings where wind often governs lateral stability design of the composite system.