Thanks Susan
You know, that was my initial apprehension, I did not see anything holding it down on the floor sample display at the store. As my hubby started the set-up, that base once assembled is heavy, not easy to budge. On the manual that came with it, it says the weight of this base module is 70.55 lbs. Right now, it is very windy outside, have been watching how it stands, so far so good!