I'm planning my second home birth (due in three weeks or so) and I have been planning all along to rent the same inflatable birth tub that I used last time. However, we are now renting in a two family house and have the second and third floors. The third floor used to be an attic, which is a huge concern for ... well.... my mother at first...but she's managed to put me into a bit of a tizzy over it :) Has anyone had experience with a birth tub being used not on the ground floor of a house? I know the best thing to do would be to ask a structural engineer but I don't have the money for that right now :/ I'm guessing that this tub holds about 150+ gallons of water, which could be a significant amount of concentrated weight. Any thoughts?