My mind made me read it correctly, but I'll get it corrected.
Our greenhouse is a dome which is even better for high winds since we are on top of a hill where it's windy year round. We have cement pylons sunk in the ground 3 feet all around the circle, then the greenhouse has long bolts going down into the cement. This greenhouse is safe from wind, but it's full and I'd like another one for cacti and succulents, but don't want to pay the high price we paid before. I'd rather find a cheaper one and add extra tie downs and hardware.