Kitchen Floor - Concrete Slab

Reply

  #1  
Old 05-18-07, 11:56 AM
Member
Thread Starter
Join Date: May 2007
Posts: 1
Kitchen Floor - Concrete Slab

I have an older house that has a 2' crawl space under the existing kitchen floor. I would like to remove the existing floor, backfill and pour a concrete slab for the new floor.

Question - what is the best compacting material to backfill with that is compatible with pouring concrete slab over.
 
Sponsored Links
  #2  
Old 05-21-07, 08:23 AM
Member
Join Date: Jun 2006
Location: USA
Posts: 110
Pea gravel or river sand should work fine. More important than the material choice is proper compaction. Compact the native soil first, then cover with a 6"-8" layer of fill and compact thoroughly with power equipment. Repeat in layers until you reach desired depth for the pour.

I would also use both rebar and concrete mesh in the pour. The added cost for a kitchen sized area will not be great, and should make for better stability of the slab in the long run.
 
  #3  
Old 05-21-07, 10:58 AM
jatco's Avatar
Member
Join Date: Mar 2004
Location: Vancouver, BC
Posts: 1,045
...that's going to be a lotta concrete... 2' worth!!
 
  #4  
Old 06-06-07, 08:36 PM
Member
Join Date: Apr 2007
Posts: 39
There shouldn't be 2' of concrete if it is backfilled. I wouldn't use pea gravel, as round rock doesn't compact. What I would do is put a base down of 4" minus for the first foot or so, then go with 3/4" minus for the last 8", then 4" of concrete on top of that. Like aq_guy said, compaction is the KEY! Do it in layers. I also agree where he says re-enforce it. But you should check with your local building dept. and make sure this is in fact doable, and obtain all the req'd permits. I personally have never seen a kitchen floor done like this. The initial problem I see is what are you going to do about the joists that you cut out that run under another part of the house?
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes