Old 02-01-2009, 12:07 PM
dbhansen's Avatar
Master Builder
Join Date: Jun 2007
Location: Appleton, WI
Posts: 563
Default Re: Foundation and a cold Canadian winter

Originally Posted by John.Halder View Post
Did you use the Forno Bravo plans?
Glad my pictures were useful, John! Yes, I did use the Forno Bravo plans, and borrowed ideas from lots of other members' pictures. Digging the foundation was a LOT of digging, but it went surprisingly quick given our thick clay soil. This is the foundation's first winter, so I'll see how she held up once the snow melts. If you have to dig by hand, I think the floating slab might be the best way to go.


To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.
Reply With Quote
Old 02-18-2009, 09:13 AM
Join Date: Jul 2005
Location: Toronto
Posts: 106
Default Re: Foundation and a cold Canadian winter

I built mine in Canadian Winterland as well. I used the floating slab approach which I learned when I built a garage a few years back up in the Parry Sound area. The concrete slab is built with integrated footings about 12-16 inces wide and 12 inches deep. When I did the garage we did not even require insulation. The concept is to dig down your perimeter trench 12-16 wide and 12 inches deep so that the inside perimter of the trench is tapered. For example if I was looking at a cross section of the trench on the right side, the outside cut would be straight up and down. The inside cut would taper from say 16" wide at the top to 12 inches wide at the bottom. So the line would go from left to righ as you go from top to bottom. If you picture this effect all the way around you essentially create an area where when poured with conrete locks the slab into place so it cannot shift left to right. You then put in rebar into the trenches. 2 rows. Use vertical peices of rebar to hold the two rows in place and have them extend up high enough so that the actuall slab rebar grid ties into the vertical pieces. You create a rebar structure with the rebar in the footings and the slab tied together. Pour your concrete. Now if monther nature wants to play with your slab ans try to heave it a bit, the whole slab will raise and lower with frost but not impact the structure on the slab. That is the concept. Now what I did for my own is I went down far enough in the perimter to give me about 3-4inches od gravel, followed by 2 inches of blue syrofoam insulation (ridgid) and then the concrete went in over this. This has been my first winter and although I have not gone out to inspect closely, I can see my oven from my window and nothing appears to have moved. Again even if it did, the whole oven would move with the slab. I am no engineer so I cannot comment on this process being bullit proof but it worked for me and makes sense.
Reply With Quote

Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
Starting my foundation questions? Italfranco1 Pompeii Oven Construction 17 07-15-2012 04:16 PM
Another foundation question mfiore Getting Started 27 06-01-2008 04:31 PM
foundation question stoneman Outdoor Kitchen Design 6 03-15-2008 05:27 AM
Oven in the snow james Heat Management 17 02-14-2008 04:47 PM
Foundation Slab RyanCD Getting Started 12 07-31-2006 02:45 AM

All times are GMT -7. The time now is 01:10 PM.

Powered by vBulletin® Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO 3.6.0
2006/10 Forno Bravo, LLC