You actually need to talk to the guys that designed and built the building when it comes to the design of the floor structure not the sup.... just be VERY careful.... that 200KGs might just be the straw that will break the camels back...
Just take into account that Mekaeel's building has been built in the early 80's - when the buildings was still built to withstand REAL EARTHQUAKES!
Not like today's buildings where cost-saving is the MAJOR factor in building new buildings....

