I do understand, I put our home through a complete basement underpin. Hand dug it deeper and installed clear span beams to be able to open up the basement to include the area that was crawl space prior. Now the basement has a clear span of 20'x20'. Did a complete kitchen remodel at the same time. Because of the way it was built in 1917 the floor joists under the crawl space had to be completely replaced, long story. we lived in he-double ell that year, 1982. Then we had the flood of a life time in 1983 ane the metro capital area was without water and most streets for navigation were closed. Not much visual on thie ole girl that I haven't redone. just 2 rooms left.