Redesign my structural slab

Job ID: 33912482

Budget: $250 – $750 USD

My supervisor notice that there is a fatal mistake it might do a deflection on the slab therefore he advise me to redesign my structural but only for slab .

There is very important notes to be considered :

1- i did start the building and reach up to columns stage ( no way go back and change the columns Desgin or the foundation)
2- all my pipes for plumbing and electrical is on the ceiling .
3- most of the AC on ground floor and also the master room in the first floor are duct split .