web analytics
That sinking feeling... - Forno Bravo Forum: The Wood-Fired Oven Community

Announcement

Collapse

New Forno Bravo Forum Feature

Forno Bravo Forum Community,

You will notice a new forum at the top of the main page called, "Ask Me Anything". This forum will be used for live one hour "Ask Me Anything" (AMA) sessions hosted by people who are knowledgeable in different areas pertaining to wood fired ovens. How it works:
- Each AMA will have a "sticky" thread where the community can post questions they would like answered during the live session. This will allow everyone to participate even if you can't be online for the live session. These questions will not be answered by the host until the live AMA; if you need an answer quickly, you should post it in the appropriate Forum area for the community to respond.
- Another thread will be posted for the live AMA. Registered users who are logged in during the live session can interact with the host by asking questions and receiving responses.
- The live thread will remain in the AMA forum to view after the session.

To kick off our AMA feature, we have invited author, chef and master bread maker and host of Pizza Quest, Peter Reinhart, to be our first host! Peter will be in the Forum on Monday, February 15th, from 7:00 - 8:00 pm EST. If you are unable to be online during the live session, you can post your questions in the sticky post. Peter will answer those questions during the live session on February 15th. You can view Peter's answers to your questions as well as what happened during the live session in the session thread.

We hope you enjoy this new feature! Please let us know if there is a topic that you'd like to have as an AMA and we'll look for a host!

Forno Bravo
See more
See less

That sinking feeling...

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • That sinking feeling...

    Hi All,
    I am close to completing my Pompeii NZ build, however when boxing up for a small final concrete pour yesterday I noticed that that the boxing (which was plumb) did not match the line of a previous construction joint (which was once upon a time plumb). Long story short, the oven is slowly rotating, having moved approx. 20mm forward to back and 10mm side to side in differential settlement.
    Has anyone had similar issues in the past? I have constructed the oven adjoining the deck so I have begun removing the decking timber with a loose plan of installing some piles in front of the slab and doweling back into the slab to prevent further rotation.
    Any ideas gladly received. Cheers!

  • #2
    Re: That sinking feeling...

    The surface under your slab obviously isn't stable, and it sounds like you don't have footings to support and hold your slab in place.

    I don't think "bracing pilings" will fix the problem. I think you want the pilings and slab connected. The last slab I had engineered for an addition to my house called for attaching new slab to existing slab with 1/2" rebar epoxied 6 inches into the old slab, 12 inches into the new slab, and the rebar "pins" placed 18 inches apart. Follow those specs and I'm fairly confident the slab won't be moving.

    So I might cut a 30cm square from each corner, and dig a piling down to bedrock (or to stable soil). Then I'd drill into the slab at least six inches on each side of the notch you cut from the slab, and epoxy in some 60 cm, 1/2" re-bar bent in half at a 90 degree angle. Point the end down into the piling, the pour your piling even with the top of the slab. The epoxy is stronger than the concrete, so your slab shouldn't move (unless your pilings aren't on stable ground).

    Comment


    • #3
      Re: That sinking feeling...

      You can try the same technique used to stabalize the leaning tower of pizza.

      Add weight (lots of weight = 1/2 weight of slab or more) to the "high" side of your slab to force settlement there. This may take time. When oven is nearly back to level, remove this extra weight. Note that some slope, around 1% or so, towards the door is desirable.
      Last edited by Neil2; 09-09-2011, 05:11 PM.

      Comment

      Working...
      X