Originally Posted by Bondo
Ayuh,.... Put in radiant tubing, over atleast 2" of foam board in yer Floor....
You bet. That is already in the build plan though I have not researched the foam underlayment much. Once major concern I have is the stiffness of the floor. we will be installed very high precision cnc machines on the floor where, believe it or not, they will certainly move the floor. Many machines require well over 12" of concrete but we are only doing 8" in the cnc area so our steel network and pad will be critical. Pouring special support pillars is not an option because the machines will get moved from time to time.
I certainly intend to maximize the performance of the sub grade and may even set all my tubing in floable fill which is basically sand with a slight amount of portand in it to max it stiff. Might really help in the large slab pour too.
Certainly open to ideas on this.