The original floor pull up the steel in the layer of cement mortar, safe?
In the structural design, the load on the board is the live load and the constant load, the constant load is generally the thickness of the board and the leveling and plastering, the live load is generally 2KN / m2, that is, 200KG a square summary, I would like to the original floor tiles All knock down for structural safety in terms of nothing, because the structural design has been taken into account the weight of tiles, you will be the original floor tiles knocked and then posted a layer of tiles for structural safety, the individual that is safe
If you are afraid of a problem, do the bottom of the paste carbon fiber, is a better way
Laying of steel on the concrete floor is not much of the load on the receiving plate, and the laying of steel on the 4 m wide plate is helpful only to the limitations of the board near the wall
