Those old enough may remember a movie by Billy Crystal and Robin Williams, I think called Father’s Day, where …. Oh never mind, don’t want to ruin anyone’s morning by thinking of this.There actually pretty strong. We had one here during the bathroom renovation, and they just hauled it out liquid and all off the lawn onto the truck with no effort.
It's hard to know for sure because the upper floors are covered in those blue panels, but I think the highest poured floor is the 15th and the core is up to the 18th.
Plus looks double the height of the residential floors