Trying to interpret construction drawing to see if hydronic heating is a good idea

[sprwl]

Trying to interpret a construction drawing to see what the floor is made of.

What I'm trying to figure out is whether it's a good idea to install waterborne underfloor heating on a slab built this way.

What I believe I decipher:
"100 Concrete II, Std K250 Steel Gl Surface
Flatness tolerance Class I, AMA72:E3.5
Reinforcement mesh diam5 c150 Ns50
290 Lightweight aggregate, CementStab"

 

[sprwl]

No one who has a good idea.

290 lättklinker sounds like leca balls under the slab, what concrete stab. means I'm not so sure about. But it sounds like some form of insulation, the question is whether it's enough?

 

[justusandersson]

290 lightweight concrete blocks are Lecakulor stabilized with a bit of cement. In terms of insulation, this probably corresponds to about 10 cm of styrofoam. Lecakulor is not an explicitly defined product, so it may vary. On top of the Lecakulor is a 10 cm thick concrete slab reinforced with a grid. K250 is the strength class of the concrete expressed in kp/cm2, which corresponds to 25 MPa. It is absolutely possible to install underfloor heating on this, even if it is not optimal.