Not Ranked
This was not a new site. Is has been a machine shop for probably 30 years or more.
There were no beams sunk into bedrock. They basically dig a pit and completely line it with anti-vibration material. They build the reinforced erector set using roughly 3/4" and 1" rebar. The cement is poured creating a free floating block of cement is essence. The machine is mounted on this pad. For the most part, it works well unless they are machining something that is really pounding. You can generally stand on the pad, then step off, and feel a difference in your feet. I used to work at a company where we had a very large CMM installed in the floor so you could drive the forklift on and off. It had a 30' x 30' x 20' deep piece of granite as the base. The CMM was mounted on the granite.
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