[TheForge] Re: chinese airhammer anvil ratios

[Loyd Craft]

I've come to this particular discussion rather late, but feel like 
chiming in with my two bits...

On the topic of big heavy machinery on the floors of your shop, I was 
taught that when pouring your floor, and best to do this before you even 
think about building the walls itself, you excavate out any areas that 
are going to get heavy machinery and pour a big footing, and use 
expansion joint to keep that section of floor separate from the rest of 
the shop floor when pouring.

I do not even pretend to know first hand how to calculate the size, but 
a friend who is in the masonry business is quite often digging out 
refrigerator sized holes for medium sized equipment and car/truck sized 
ones in jobs for heavy industrial buildings.    Really sucks up the 
concrete, but picture one bag of quickrete weighing 80 pounds and then 
stack them to the size of a refrigerator or full size car and you're 
talking some real mass carrying those vibrations deep into the soil.

If I had to install a big heavy piece of equipment that did a lot of 
pounding I'd be thinking about jutting out a lean-to addon to my shop 
and burying that concrete.   In the long term it might be cheaper doing 
that than replacing your floor or shaking the heck out of your building 
over the years.