The big problem for the super-rigid or super-massive schools of TT isolation is that the continuous motion of the Earth's crust (and other sources of low freq. vibration such as traffic) forces the building's foundation and structure to shake, shake, shake. Unless the TT is decoupled from the structure/foundation, the TT is susceptible to low freq. vibration, even when placed on super-massive or super-rigid platforms.
Geoff Kait, Machina Dynamica
Geoff Kait, Machina Dynamica