I was sitting at a light this morning next to a convenience store and they rent a corner of the parking lot to a farmer during the summer for a farmers market. Yesterday I saw them setting up their framework today they had the canvas cover on. My guess is the tent thing is 16 x 24 and the store must have rules about driving anchors into the parking lot. They have 6 round poured concrete things with eye hooks in the top and straps going to the corners and midway the long side. I was going to take a picture as the light changed but ran out of time. These hold down blocks were 3 foot in diameter and 3 foot tall. I have no idea how they figured that out. But they were not taking any chances.