DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > Framing and Foundation > How to Minimize Frost Heave




Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old 06-10-2014, 03:27 AM  
Supershine
Junior Member
 
Join Date: Jun 2014
Location: Toronto, Ontario
Posts: 1
Default How to Minimize Frost Heave

Hi Everyone,

What's the best way to minimize frost heave and any cracking in the following situation:

I'm building a shed on a 9' x 10' concrete slab foundation. The frost line here is about 3'6" below grade, but I don't really want to dig that far down.

The "footing" will only be about a foot deep and the slab will be 4" thick. The entire foundation will be poured over 4" of gravel. I've included a picture that shows more or less what I'm planning.

Does anyone have any good ideas?

Thanks!



foundtion.jpg  
__________________
Supershine is offline  
 
Reply With Quote Quick reply to this message
Old 06-10-2014, 05:09 AM  
bud16415
Fixer Upper
 
bud16415's Avatar
 
Join Date: Feb 2013
Location: Erie Pa, Pa
Posts: 1,039
Liked 299 Times on 235 Posts
Likes Given: 102

Default

As far as I know there are two ways to deal with it. The first being get down below the frost line and let the frost hold the building in place. The second is to allow the building to float more suitable for sheds and such without piping. If a structure is to float it will move and in the spring go back into place. The type of foundation you show is one made to float and has to have enough strength with reinforcing to move without cracking. Around here a lot of people build a shed on a base made from treated wood to float almost like a large skid. The other method is pole barn construction where the poles only go down below the frost line. People will pour a floor inside them and will get some cracking normally or pour it in smaller sections or cut it to control the cracking.

__________________
bud16415 is offline  
 
Reply With Quote Quick reply to this message
Old 06-10-2014, 04:02 PM  
kok328
Supporting Member
HRT_SUPPORTER.png
 
Join Date: Nov 2007
Location: Grand Blanc, MI
Posts: 2,173
Liked 102 Times on 89 Posts
Likes Given: 61

Default

We have a 42" frost line code requirement in MI.
I usually go 48".
Talked to my well driller and he said he rain into 60" frost lines this year.
You may have to follow local code for the footings as well as the remainder of the build.
Here, anything over 10' x 10', requires a permit.

__________________
kok328 is offline  
 
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
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter DIY Home Repair Forum Replies Last Post
Frost on top of foundation RedBaron Framing and Foundation 10 03-01-2014 06:16 PM
Deck raised again due to frost heave! user1234 Decorating and Design 6 04-21-2011 04:04 PM
Stack Frost kok328 Roofing and Siding 5 04-27-2008 06:21 AM
frost on compressor? caldama HVAC 3 06-14-2007 08:51 PM
frost on compressor? caldama Introductions 0 06-11-2007 01:51 PM