We are building two large pergolas ( 17x24) in a garden space. They will be free standing and use fiberglass columns 10 inches by 8 feet. . We have periodic high winds so I need the strongest way to secure the columns to the ground and deter sway.
Your local building permit office will have information about the required attachment methodology. Start there since they will be the ones inspecting the structures.
Arbors Direct would love to help you out! We create custom structural fiberglass pergolas! Send us your drawings at sales@arborsdirect.com and we'll be glad to help you out. We also have methods to secure your pergola in high winds!
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