Installed my first 3 x 3 shed over 40yrs ago. It's been through 4 cyclones, with the last one giving 250km/hr winds and 900mm of rain for 12hrs, half from each direction as the eye of the cyclone moved over. It stood the test, with just a couple of dents from flying tree limbs to straighten. Just put up another one for my daughter, again by myself, and again adding proper roofing screws and stainless pop-rivets at strategic points. No steel strap wall bracing this time as not a cyclone area... yet...