Hello everyone, I took a look at your design. Although it required a few minor adjustments, you generally did what was necessary, but the system was extremely costly, especially in terms of iron content. It does not seem possible that you can explain this quantity to the contractor company. (Even 1% in 100/100 columns requires 32 fi 20 reinforcement). For this reason, I suggest you change your design to, for example, secondary beam slab flooring. If there is no special situation, try the raft foundation as a permanent foundation. Good work.