Accident when shopping at a store

I stopped at a business to buy at item, when a large section of the roof collapsed. I jumped out of the way, and was not harmed. My wife was also under the roof, and escaped injury by luck only. I didn't know this going in, but the store had a crew working on the roof at the time, which was the "straw that broke the camel's back" so to speak. I feel that the business should have closed off the area and not allowed patrons under the roof while it was worked on, or until deemed safe. If someone slower than me, or hard of hearing, they would have been killed. Do I have any sort of position to sue the store for negligence?