Rooftop pergola Wind Load

I tried to use a patio umbrella with a weight base for my rooftop patio, and it was too much wind resistance and not enough weight. So I want to install this Mirador 80S 10'x10' Pergola. It weighs 308 pounds. It's rated for 73 or 82 mph winds. However, my HOA would like a wind load assessment, do you know somebody in northern Virginia that could do this? Since this is a townhome, I was planning on mounting each corner posts on a 50lb granite patio umbrella base. That would make the total weight of the pergola over 500lbs. I could make it 2 patio umbrella bases per corner post for an additional 200 pounds of weight, but wonder if that's overkill. The posts and cross pieces don't seem like they would provide significant wind resistance. I welcome any advice. submitted by /u/Upstairs-Comment6277 [link] [comments]

Jun 19, 2025 - 21:56

I tried to use a patio umbrella with a weight base for my rooftop patio, and it was too much wind resistance and not enough weight.

So I want to install this Mirador 80S 10'x10' Pergola. It weighs 308 pounds. It's rated for 73 or 82 mph winds.

However, my HOA would like a wind load assessment, do you know somebody in northern Virginia that could do this?

Since this is a townhome, I was planning on mounting each corner posts on a 50lb granite patio umbrella base. That would make the total weight of the pergola over 500lbs. I could make it 2 patio umbrella bases per corner post for an additional 200 pounds of weight, but wonder if that's overkill. The posts and cross pieces don't seem like they would provide significant wind resistance.

I welcome any advice.

submitted by /u/Upstairs-Comment6277
[link] [comments]