Sprinklerman
Platinum Member
We accomplished the same thing once , but we jacked up the house and added 2 courses of block . It took 4 days .
Thanks for the replies. The reason for the removing the matieral is to change the depth from 7 ft to 8 ft, and allow for a 4 in thick floor. It is in a old commercial building, no poking holes in walls!! A 7 ft basement is ok for storage, but 8 ft is allowed to be used as commercial space. I guess at the amount of matieral and difficulty make it a no go.