Yes it's true. And how many thousands of machine shops are just rented out warehouses with machinery on the floor??

Yes all machines should be on a isolated concrete foundation as per OEM specs. I'd be willing to bet that less the half the machines in the US are on correct foundations.

Thing will shift but if goo attention is paid matters can be caught early.
As for a home shop doing basic work I would not even sweat it.
Now if it was a large CNC or a Jig bore. You bet I'd pay big bucks for an 8000 Psi foundation how ever thick required.

Last edited by KLStottlemyer; 01/13/13.