Friends If you examine the architectural project I have given below, the 1st basement floor is a very small part. half remains on the ground. Half down. I think we're going to do this with the jeans-making process. I don't have a good command of project works yet. I have done a couple of projects, but I would be very grateful if someone could explain how to do it in a more descriptive way. How am I going to build the foundation and the floor like this? In fact, if you add a short 5-minute drawing by showing it only in the basement, it would be good both for me and for the friends who want to have information about this subject after us...