How Are Metal Carports Anchored to the Ground?

How a metal carport is anchored

Anchors connect the base rail to the surface below, so the right anchor depends on that surface, the soil, the structure, and the design requirements. In Northern California, where wind gusts and seismic activity are factors, selecting the correct anchoring system is critical for structural compliance and safety.

1. Concrete Expansion Anchors (Wedge Anchors)

If your carport is being installed on a 4-inch or thicker concrete slab, industrial wedge anchors are used.

• Best for: Enclosed garages and buildings on level concrete.
• How it works: A hole is drilled through the base rail into the concrete, and the anchor is hammered in and tightened to create a permanent mechanical bond.

2. Rebar Anchors (Pin Anchors)

For ground or gravel installations, rebar anchors provide basic temporary stability.

• Best for: Standard carports in low-wind areas with stable soil.
• Limitation: These may not suit designs with higher uplift demands. Confirm the anchor type and capacity for the exact structure, soil, and site criteria.

3. Helical Ground Anchors

Some ground or gravel installations use helical anchors. The appropriate anchor depends on the soil, surface, structure, and design requirements; do not assume one anchor type meets every site's wind or snow criteria.

• Best for: Projects whose specified ground-anchor system is compatible with the property and structure.
• How it works: A screw-like anchor is installed into the ground to provide resistance according to its specified configuration and site conditions.

4. Asphalt Anchors

Specifically designed for the porous and flexible nature of asphalt. These anchors are longer and have specific threading to prevent pull-out that standard concrete anchors would suffer on asphalt.

Warning: Using the wrong anchor for your ground type can void your warranty and jeopardize the safety of your property.