We built a cistern under what would be the kitchen. First, after digging out the hole for it, we poured the bottom and walls. No problem so far. Next, we constructed the top, which would be part of the whole floor of the the Dining rom and kitchen. Here is where the fun began. We had to support all that reinforced concrete, and yet the support timbers had to be removed later. This involved adding a small hatch in the top to allow me to later go down in the cistrern and , using a sledge hammer, knock okut all the supporting timber’s wedges. That part was a bit scary. Would the damn thing collapse on me?
In the next photo you can see the small hatch cover in the upper right portion of the photo. It all worked out just fine, but I sure felt scared down there with all the massive weight above me!