Total thickness of Rcc flooring on 2nd floor

Assalam o alaikum

Dear All, I need expert advice on this matter, I had constructed 2nd floor of my 120 yrds house 1 year back with rcc and cement flooring. now i had plan to install marble on the cemented floor. my thekedar told me that 3 to 4 inches of material filling on same cemented floor then marble will be installed. after installation the combination is just like 5 inches of rcc +5 inches filling for cemented floor+ 4 inches of marble floor. is it ok to go with. plz guide

@nauman.ahmad_1 Please help the guy!