I searched the forums for this, but if I missed the answer somewhere - please point me in the right direct. I have structure that is built over a crawlspace. I would like to convert the first floor to a concrete pad to be used as a garage. There are no utilities located in this crawlspace. At first it would seem simple - remove sub-floor/joists - backfill with dirt and compact - add gravel - then pour concrete... but the dilemma arises at the perimeter walls. The exterior load bearing walls are built on top of the sub-floor/joists/sill plate. Any suggestions what to do with the sill/joists/sub-floor directly under the walls? Pouring the concrete around them does not seem to be correct as they would eventually rot. thanx in advance for your suggestions

I have an 8 foot wall to build in an open room with 20 foot ceiling... is it enough for me to attach the wall to the exterior walls or do i need additional points of attachment.. the wall will be 24 feet long.. made of wood framing and permanent.. and the floor it will be put on is wood w/ wood framing .. thanks for ne help