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  #1  
Old 08-02-2013, 01:25 PM
jms jms is offline
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Default 30"/760mm Scotland Pompeii

I've been lurking for a long while and I've finally got time to do my own oven project. The FB plans and peoples' build threads have been invaluable during my own planning.

The plan is for a 30", no-vermicrete oven, which will be finished with a brick outer-igloo. Several years ago I built a clay/sand oven which was compromised from the start by the habitual dampness of the scottish weather, so with this build I'm trying to avoid things which the weather might complicate.

I finished the plinth nearly two months ago. Available space in our garden was an issue, which is the reason why the oven will be so small compared to some of the behemoths on here, but 30" will be plenty big enough for our use of small pizza-parties, bread, and roasts.

A tree (fatally damaged in a storm) and the old oven used to inhabit the space where the plinth is. The tree needed to come out eventually so we took the opportunity to take its roots out too and then turn the resulting hole into the foundations.
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  #2  
Old 08-05-2013, 12:47 PM
jms jms is offline
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Default Re: 30"/760mm Scotland Pompeii

Moderation queue took a while

The old clay oven remains were originally going to be disposed of elsewhere but then I realised that I'd need to fill in the first two layers of blocks to make a floor for the wood-store. The amounts lined up pretty perfectly. Layer of sand on top and then concrete.

Next day I filled in the surrounding voids with rock and then continued stacking the plinth blocks and filling them with concrete.
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30"/760mm Scotland Pompeii-img_0478_1200x900.jpg  
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  #3  
Old 08-05-2013, 01:07 PM
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Default Re: 30"/760mm Scotland Pompeii

Looking good, jms!

I built a 32inch - and I am extremely happy with it!

My thread is here:
http://www.fornobravo.com/forum/f8/3...nia-19283.html (32 Inch Pompeii in Northern California)

Good luck and don;t hesitate to ask questions!
Neil
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  #4  
Old 08-05-2013, 01:08 PM
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Default Re: 30"/760mm Scotland Pompeii

Fair play to you, that is alot prep work to get out of the ground.

Nice to see Scotland with some sun.
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  #5  
Old 08-05-2013, 01:27 PM
jms jms is offline
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Default Re: 30"/760mm Scotland Pompeii

I ordered a reinforced concrete lintel to span the wood-store from my local builders yard. Unfortunately at the time I didn't know that they could make them to pretty much any size, I had ordered a preset size, so I had to cut it down with an angle grinder. Mortared the lintel down and then built the framework for the top slab.

Once I had the framework up I cut my steel mesh reinforcement. I had a lot extra so I overlapped it quite a bit. Finding the little plastic holder-feet things I've seen in many US builds proved to be impractical, I found that in the UK you can only get them in boxes of 1000 , so I had to use some treated timber.
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30"/760mm Scotland Pompeii-img_0492_1200x900.jpg  
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  #6  
Old 08-05-2013, 01:47 PM
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Default Re: 30"/760mm Scotland Pompeii

Quote:
Originally Posted by jms View Post
Finding the little plastic holder-feet things I've seen in many US builds proved to be impractical, I found that in the UK you can only get them in boxes of 1000 , so I had to use some treated timber.
Sounds like a business opportunity buy the big box, repackage and sell them to small hardware stores. Next time use a small piece of Brick or stone for your rebar chairs when in a pinch.
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  #7  
Old 08-05-2013, 02:00 PM
jms jms is offline
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Default Re: 30"/760mm Scotland Pompeii

I dismantled the slab framework after a week because I knew I couldn't do the next stage for at least a couple of weeks so there was no rush, the extra safety couldn't hurt.

In all the plinth consumed around 70kg of cement, 200kg of sand and 300kg of aggregate. Shuttling the materials through our garage into the garden was probably the most time consuming part.

I'm pretty pleased with the result. I'm not yet decided on how it'll be finished, probably a basic render of some kind.
Attached Thumbnails
30"/760mm Scotland Pompeii-img_0517_1200x900.jpg   30"/760mm Scotland Pompeii-img_0523_1200x900.jpg   30"/760mm Scotland Pompeii-img_0519_1200x900.jpg   30"/760mm Scotland Pompeii-img_0520_1200x900.jpg  
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  #8  
Old 08-05-2013, 02:09 PM
jms jms is offline
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Default Re: 30"/760mm Scotland Pompeii

Quote:
Originally Posted by mrchipster View Post
Sounds like a business opportunity buy the big box, repackage and sell them to small hardware stores. Next time use a small piece of Brick or stone for your rebar chairs when in a pinch.


I could have cut up an old brick paver to use as chairs, but it didn't occur to me until just after I had poured it

Last edited by jms; 08-05-2013 at 02:12 PM.
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  #9  
Old 08-05-2013, 02:27 PM
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Default Re: 30"/760mm Scotland Pompeii

What are you going to use as underfloor insulation?
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  #10  
Old 08-05-2013, 02:45 PM
jms jms is offline
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Default Re: 30"/760mm Scotland Pompeii

Nearly a month ago I got around to ordering the oven materials. I used http://kilnlinings.co.uk who do everything needed. I originally wanted to get the stuff from a local supplier but they were ~25% more expensive.

At some point during ordering the Calcium silicate board got deselected and I didn't notice, which lead to a nice surprise upon delivery . The local supplier had some in stock and I picked it up the next day.
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