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Wind Resistivity and Design Considerations

Blade Signs: Wind Resistivity and Design Considerations

Blade signs, also known as projecting signs or flag-mount signs, are a popular type of signage for businesses of all sizes. They are mounted to a building façade or architectural surfaces, such as a post or pole, at an angle perpendicular to the flow of traffic. Blade signs are typically double-sided to be viewed from both directions.

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One of the most important considerations when designing a blade sign is wind resistivity. Blade signs are exposed to the elements, so they need to be able to withstand high winds without being damaged. There are a number of factors that affect the wind resistivity of a blade sign, including:

  • Size and shape: Larger blade signs are more susceptible to wind damage than smaller signs. Signs with complex shapes are also more likely to be damaged by wind than signs with simple shapes.
  • Materials: Blade signs are typically made of metal, wood, or acrylic. Metal signs are the most durable and wind-resistant, but they are also the most expensive. Wood and acrylic signs are less expensive than metal signs, but they are also less durable and wind-resistant.
  • Construction: The way a blade sign is constructed also affects its wind resistivity. Signs that are well-constructed with strong welds and fasteners are more likely to withstand high winds than signs that are poorly constructed.

In addition to the factors listed above, there are a number of design considerations that can help to improve the wind resistivity of a blade sign. These include:

  • Using a truss structure: A truss structure is a triangular framework that provides additional strength and support to a blade sign. Truss structures are especially important for large blade signs.
  • Using wind vents: Wind vents are openings in the sign face that allow wind to pass through without causing damage. Wind vents can help to reduce the wind load on a blade sign.
  • Using rounded corners: Rounded corners are less likely to catch the wind than sharp corners. This can help to reduce the risk of wind damage.

If you are considering installing a blade sign, it is important to consult with a qualified sign company to ensure that the sign is properly designed and constructed for your specific location and wind conditions.

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Here are some additional tips for improving the wind resistivity of your blade sign:

  • Make sure that the sign is securely attached to the building or pole. Use heavy-duty brackets and fasteners that are rated for the wind conditions in your area.
  • Inspect the sign regularly for signs of damage. If you find any damage, make repairs immediately to prevent further damage.
  • Consider having the sign professionally inspected and maintained on a regular basis.

By following these tips, you can help to ensure that your blade sign is wind-resistant and will last for many years to come. 

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