web analytics
36 inch / 900 mm build in New Zealand - Forno Bravo Forum: The Wood-Fired Oven Community

Announcement

Collapse
No announcement yet.

36 inch / 900 mm build in New Zealand

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

  • 36 inch / 900 mm build in New Zealand

    Welcome to the build

    We are making a 900 mm ID (35.4") brick oven in Wellington, New Zealand. Initially was looking to keep costs down, but things... well you know how things go.

    When we looked at the price of a pre-built, high quality oven locally ($6K), it was felt that we could get a better result for half the price. Looks like we might not come in on budget (ha!), but we do get exactly what we want, we know how it is built & we get the pleasure of making it.

    So, it's a corner build on top of a retained terrace in the back yard. There was limited space so the hearth is cantilevered 100 mm (4") over the edge of the blocks. Pics!

    Click image for larger version  Name:	1001.jpg Views:	1 Size:	569.0 KB ID:	410459
    Template was super helpful.

    Click image for larger version  Name:	2012.jpg Views:	1 Size:	448.4 KB ID:	410460
    Here I have 107 mm (4.2") floor. I wanted the large tiles and they only had 32 mm (1.25) thickness. It was a similar price to do double layer tiles (64 mm, 2.5") Vs. to do bricks and then tile over. So went with the extra thickness. My first course will be half headers, sitting on the brick, and with the tiles cut to fit within. Half headers will match the height of the archway bricks - as they are all laid on their largest face (75 mm / 3" high).

    Internal diameter as noted is 900 mm (35.4"). A perfect hemisphere for strength, so internal height target 450 mm (17.7"). Opening height target 283.5 mm (11.16"), also a perfect arch, so the width is 567 mm (22.3"). This seemed the simplest approach, the height of the opening being controlled by how far apart you set the base bricks.

    You can see my cardboard angle thing, so I knew where the internal surface of the dome would meet the bottom edge of the top dead-centre (TDC) arch brick, thus showing how far in the arch should start. You can use a right angled triangle calculator online to figure it out as well.

    Click image for larger version  Name:	4026.jpg Views:	1 Size:	842.4 KB ID:	410461


    Click image for larger version  Name:	5027.jpg Views:	1 Size:	746.4 KB ID:	410462
    The pile on the left is circa 4 ft deep - the soil was soft all the way down! The one on the right, 1.5-2 ft topsoil then clay. This terrace structure has been backfilled some decades ago and so is not all hard clay, but has had years of natural compaction.

    Click image for larger version  Name:	6028.jpg Views:	1 Size:	870.1 KB ID:	410463

    More soon..
    Last edited by billyben; 01-14-2019, 01:47 AM.

  • #2
    No more than 6 attachments per post! And man is this pic uploading giving me trouble...

    Click image for larger version  Name:	7029.jpg Views:	1 Size:	879.0 KB ID:	410466

    Click image for larger version  Name:	8030.jpg Views:	1 Size:	877.8 KB ID:	410467
    I developed a fondness for steel, and used a bit too much, especially later on! The structure is probably not going anywhere any time soon.

    Click image for larger version  Name:	9031.jpg Views:	1 Size:	688.4 KB ID:	410469

    Click image for larger version  Name:	10002.jpg Views:	1 Size:	614.5 KB ID:	410468
    Finished the pour late!


    Click image for larger version  Name:	13005.jpg Views:	1 Size:	774.3 KB ID:	410465
    That pile on the left is the size of the one I sunk in the ground.

    Bed time, will chuck up a few more tomorrow.
    Last edited by billyben; 01-14-2019, 01:32 AM.

    Comment


    • #3
      Have made more progress than the photos show, but the difficulty uploading has meant I've left this longer than anticipated. Let's try again!









      Last edited by billyben; 03-03-2019, 10:35 PM.

      Comment


      • #4
        Still issues...

        Anyway.

        Click image for larger version  Name:	20013.jpg Views:	1 Size:	704.2 KB ID:	411288

        Click image for larger version  Name:	21014.jpg Views:	1 Size:	669.8 KB ID:	411289

        Click image for larger version  Name:	22015.jpg Views:	1 Size:	752.7 KB ID:	411290

        Click image for larger version  Name:	23016.jpg Views:	1 Size:	610.0 KB ID:	411291

        Click image for larger version  Name:	24017.jpg Views:	2 Size:	625.4 KB ID:	411293

        Comment


        • #5
          More progress to come after these, just need to get the photos..

          Click image for larger version

Name:	25018.jpg
Views:	1
Size:	652.8 KB
ID:	411295

          Click image for larger version

Name:	27020.jpg
Views:	1
Size:	610.4 KB
ID:	411296

          Click image for larger version

Name:	28021.jpg
Views:	1
Size:	732.5 KB
ID:	411297

          Click image for larger version

Name:	31025.jpg
Views:	1
Size:	558.7 KB
ID:	411298

          Comment

          Working...
          X