DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Bricks, Masonry and Concrete > Block foundation under cabin




Reply
 
Thread Tools Search this Thread Display Modes
Old 09-14-2012, 03:58 PM  
papakevin
Member
 
Join Date: Oct 2011
Location: Jeffersonville, IN / Louisville, KY
Posts: 89
Liked 5 Times on 5 Posts

Default Block foundation under cabin

We are having a contractor install a block foundation under an existing cabin which was previously on steel stilts. The steel was badly rusted and needed to go.

The contractor dug a trench, poured some concrete and will start building up the block foundation underneath the cabin (which they raised up) soon.

My question - how deep and wide should concrete be in order to place blocks on top of it? I'm traveling out of town on business, but have received a couple photos of the job in process. To me, the depth seems too shallow. (See attached photos). The property is in Southern Indiana, just North of Louisville, KY.

Thanks.



image-871467373.jpg   image-3727504458.jpg  
__________________
papakevin is offline  
 
Reply With Quote Quick reply to this message
Old 09-14-2012, 06:10 PM  
nealtw
Contractor
 
Join Date: Nov 2010
Location: vancouver, b.c.
Posts: 10,747
Liked 926 Times on 826 Posts
Likes Given: 1595

Default

The trench should be below frost level in your area. The concrete should be about 8" deep, give or take a little and the width depends on soil condition and the weight of the house. Our smallest footing would be 18" x 8" and 2 rebars 5/8" diameter placed 2" from the bottom of the footing.



__________________
nealtw is offline  
 
Reply With Quote Quick reply to this message
Old 09-15-2012, 04:47 PM  
papakevin
Member
 
Join Date: Oct 2011
Location: Jeffersonville, IN / Louisville, KY
Posts: 89
Liked 5 Times on 5 Posts

Default

Stopped by the property today and they have made a lot of progress, so I guess it's no longer a concern....

Assuming they should jack up the house to fit in the new top plates before it is lowered down, right?

image-268941013.jpg   image-1103133193.jpg   image-205993597.jpg   image-260842204.jpg  
__________________
papakevin is offline  
 
Reply With Quote Quick reply to this message
Old 09-15-2012, 04:49 PM  
papakevin
Member
 
Join Date: Oct 2011
Location: Jeffersonville, IN / Louisville, KY
Posts: 89
Liked 5 Times on 5 Posts

Default

Follow up question - should I spray or coat the block with something before the dirt gets back filled?

__________________
papakevin is offline  
 
Reply With Quote Quick reply to this message
Old 09-15-2012, 11:17 PM  
BridgeMan
Senior Member
 
BridgeMan's Avatar
 
Join Date: Aug 2011
Location: Cottage Grove, Oregon
Posts: 738
Liked 75 Times on 67 Posts

Default

Nice looking block work, but I think the footings are too shallow for your climate. My map shows Indiana frost lines ranging from 15" to 25", meaning there's a chance there will be some heaving in the building's future. Maybe enough compacted fill placed up against the walls will get you close to that.

And yes, you should seal the block with an asphaltic mastic, to keep from turning the crawl space into a swamp. And it wouldn't hurt a bit to extend the downspouts at least 5' away from the walls, instead of dumping the roof run-off right next to the walls like it is now.



__________________
BridgeMan is offline  
nealtw Likes This 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
My next foundation project: Iron posts supporting cabin? papakevin Framing and Foundation 22 11-22-2011 08:28 PM
Block foundation holes chrishallowell Bricks, Masonry and Concrete 3 09-05-2010 07:59 PM
Block foundation problem julienb Framing and Foundation 1 05-19-2010 12:54 PM
Spawling Foundation Block joecairl Bricks, Masonry and Concrete 9 06-27-2008 03:33 PM
Foundation Block Failing Gmang1 Bricks, Masonry and Concrete 3 06-27-2008 09:58 AM

Newest Threads

LATEST SPONSOR DEALS