Home Wind-Rated Carports: MPH Claims, Anchoring & Evidence
Wind-Rated Carports: MPH Claims, Anchoring & Evidence
A wind-speed number is not a universal certificate. Compare the exact configuration, calculation/test basis, anchoring, enclosure assumptions and local design requirement before relying on a carport wind claim.
MPH alone is not enough
Two products can both advertise a wind speed while relying on different standards, assumptions, geometry and anchoring. Current Arrow pages state up to 100 MPH and explain that the figures assume a standalone, securely anchored structure, with calculations referenced to ASCE 7-05 on the family page. VersaTube publishes exact-configuration values such as 130 MPH on several Classic kits and states that ratings assume a completely and securely anchored frame. Canopia publishes lower product-specific tested wind values on some aluminum/polycarbonate models.
CarportFit preserves the published basis and does not sort a 130-MPH label above a 100-MPH label as though every manufacturer used an identical design method.
Current examples show configuration matters
| Current example | Published wind evidence | What not to assume |
|---|---|---|
| VersaTube Classic 12×20×7 | Up to 130 MPH | Do not transfer that value to every VersaTube width/height; the 30×20×7 record in the same current catalog is 115 MPH. |
| Arrow 12×20×7 | 100 MPH in current manufacturer narrative | Do not ignore the standalone/securely anchored assumptions or current structured-field conflicts. |
| Canopia Colorado 14×16 | Tested to 68 MPH | Do not treat the value as equivalent to an installed-provider certification package without checking the basis. |
| Canopia Verona 10×17 | Tested to 56 MPH | Do not transfer a family/brand reputation to a different product configuration. |
Wind performance depends on the whole structure
- Anchors and foundation: uplift resistance depends on the load path into concrete/soil.
- Open vs enclosed configuration: adding walls changes wind pressures and can invalidate assumptions behind an open-frame claim.
- Width, height and frame spacing: a rating for one configuration does not automatically transfer to another.
- Exposure and local design criteria: site-specific requirements are outside a generic product label.
- Engineering documentation: some installed providers can supply certified configurations/drawings for a location; that is different from a retail product-page rating.
Use the rating to narrow candidates, then verify the project
CarportFit can help surface exact products with documented wind evidence and installed providers for your state, but the final local design still belongs to the provider/manufacturer and permitting process.
Installed “certified” configurations are a different purchase path
Current installed-provider listings can advertise wind/snow packages and engineered drawings for configured buildings. For example, Carport Central currently markets certified configurations with location-dependent wind/snow claims and included anchoring/bracing. CarportFit treats that as an installed-provider capability, not as proof that every provider product has the same rating everywhere.
If local certification is non-negotiable, choose the installed path in the Finder, enter your state, and confirm ZIP/project requirements with the provider before ordering.
Manufacturer/provider references
- VersaTube Classic 12×20×7 Exact-product source publishing up to 130 MPH and anchored-frame assumptions.
- Arrow steel carport family Current manufacturer source publishing up to 100 MPH with standalone/anchoring and local-code conditions.
- Canopia Colorado 14×16 Current product source publishing a tested 68-MPH wind-resistance claim.
- Carport Central certified installed example Provider example showing location-dependent certification, engineered drawings and anchoring as an installed configuration path.
Frequently asked questions
What does a 100 MPH wind rating mean for a carport?
Only the manufacturer's exact published claim and conditions. Check the configuration, calculation/test basis, anchoring, enclosure assumptions and whether the value is applicable to your local design requirement.
Is a higher MPH number always a better carport?
Not necessarily. Ratings from different manufacturers may use different standards, assumptions and configurations. Fit, foundation, engineering documentation and local requirements matter alongside the advertised speed.
Does enclosing a carport affect its wind rating?
It can. Adding walls changes wind pressure behavior, so an open-frame rating should not automatically be carried over to a partially or fully enclosed configuration.
Can CarportFit certify a carport for hurricane or high-wind code?
No. CarportFit can compare documented manufacturer/provider evidence, but project certification and locally adopted design requirements must be handled through the exact manufacturer/provider, engineering and permitting process.
Why can two sizes from the same brand have different wind ratings?
Width, height, frame spacing, bracing and other configuration details can change structural performance. Ratings should be stored and compared at the exact configuration level whenever possible.