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  #21  
Old 11-28-2012, 07:01 AM
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Location: Athens, WI
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Default Re: 36" pompeii in WI in the winter

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Originally Posted by Faith In Virginia View Post
I got to looking at your build. How many yards of concrete did it take to fill your base? What kind of fork lift does your friend have? I fear that you are going to exceed the lifting abilities of your fork lift and get stuck with a finished oven in your garage. Hope I'm wrong.
I hope you are wrong too. The forklift is rated at 9000 lbs.. There is 1.37yds. in the base which comes in just under 5000lbs.. 200 firebrick will be about 1600 lbs., and mortar 180lbs., which brings it to 6780lbs.. I'm not sure how much everything else will weigh, but I'm guessing the overall weight will be somewhere around 7500. At the most 8000lbs..
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  #22  
Old 11-28-2012, 07:22 AM
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Default Re: 36" pompeii in WI in the winter

This forklift was rated at 6000#, with the oven estimated at 2800#. Note the rating is at the lowest point with the boom retracted. We loaded it, but it got sketchy.
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36" pompeii in WI in the winter-load1.jpg   36" pompeii in WI in the winter-load2.jpg   36" pompeii in WI in the winter-load5.jpg  
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  #23  
Old 11-28-2012, 07:51 AM
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Default Re: 36" pompeii in WI in the winter

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Originally Posted by Tscarborough View Post
This forklift was rated at 6000#, with the oven estimated at 2800#. Note the rating is at the lowest point with the boom retracted. We loaded it, but it got sketchy.
By extending that boom you change the center of gravity significantly. The the length at which you had it extended to load it on the trailer probably dropped the rating to 2000#.

Equipment is generally underrated. For example, we lifted the base (5000#) off of the forms with a small telehandler rated at 4000#. We had to keep the boom all the way in, but it did it. The forklift I will use doesn't have an extendable boom and would probably lift 10000# though it would probably be unsafe to lift it very high.

If all else fails there is a guy a half mile down the road that runs a sawmill with a large front end loader. We've had him move stuff before and I'm sure I could get him to help me out.

So, in short.......I'm not worried about it.

Aaron
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  #24  
Old 11-28-2012, 08:56 AM
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Default Re: 36" pompeii in WI in the winter

Yeah, it won't be a problem. I am curious though, being a concrete guy, why you didn't go for a high strength/lightweight mix at 2-3" thickness.
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  #25  
Old 11-28-2012, 04:21 PM
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Default Re: 36" pompeii in WI in the winter

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Yeah, it won't be a problem. I am curious though, being a concrete guy, why you didn't go for a high strength/lightweight mix at 2-3" thickness.
Oddly enough, the reason I didn't go for the high strength idea is because I am a concrete guy. We had a small job nearby for which the readymix plant's 3 yd minimum would've been too much. By using the extra for the base we were able to get some cheap concrete. High strength concrete is more expensive, and since I had access to heavy equipment I didn't worry about it.

After taking the forms of and seeing how sturdy things are, I'm thinking that 3.5", or maybe even 3" would work for the side walls with regular ready-mix. Providing, of course, that there is enough rebar, and that all the air bubbles get vibrated out. Getting a vibrator in that narrow of a wall with rebar can pose problems. We got ours stuck down in the bottom as it was, and ended up cutting a hole in the wall form too lose it.
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  #26  
Old 11-28-2012, 04:35 PM
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Default Re: 36" pompeii in WI in the winter

I was thinking more along the lines of GFRC with maybe pencil rod at a few points. BUYING 10,000 PSI compressive, high flexural strength lightweight concrete is expensive, but mixing it yourself isn't.
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  #27  
Old 11-28-2012, 05:02 PM
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Default Re: 36" pompeii in WI in the winter

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Originally Posted by Tscarborough View Post
I was thinking more along the lines of GFRC with maybe pencil rod at a few points. BUYING 10,000 PSI compressive, high flexural strength lightweight concrete is expensive, but mixing it yourself isn't.
I don't have any experience with GFRC (we don't do that kind of concrete work) and honestly didn't think much about such an option. It probably would be neat to do something like that though. Maybe on my next build

I am thinking of pouring a counter-top on the front of the oven. Mixing my own GFRC sound interesting. Could you give me (or point me to) some info on the subject?
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  #28  
Old 11-28-2012, 05:07 PM
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Default Re: 36" pompeii in WI in the winter

Thanks for the response. Your numbers changed a bit from an earlier post. My eye thought you had more then a cubic yard. I'm not a concrete guy but I do own a construction company so I have my fingers in all the trades.

Good to know that if the 9000 lb won't get the job done you have a backup with the sawmill.

Good luck and it's looking great. I'll go back to lurking now.
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  #29  
Old 11-29-2012, 04:04 PM
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Default Re: 36" pompeii in WI in the winter

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Originally Posted by Faith In Virginia View Post
Good luck and it's looking great. I'll go back to lurking now.
Thanks. Here's a cheesy cellphone pic of what I have done so far.(I'll post better ones later) I finished the arch and the fifth course. I have to go back to work for a few days now so the mortar in the arch should have time to dry before I pull the form out. It's only 48-50 degrees F in the shop so the mortar dries somewhat sluggishly. It's great for strength and minimizing shrinkage cracks but I have to be careful not to bump things too much.
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Last edited by AaronTheGeek; 11-29-2012 at 04:11 PM. Reason: Pic added
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  #30  
Old 12-05-2012, 09:07 AM
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Default Re: 36" pompeii in WI in the winter

We're up to the 7th course now. It has a little dip going over the arch that I will try to correct in the next course. I will be switching from 1/2 bricks to 1/3 bricks for the 8th course. So far I have been doing just one cut for each brick with good success. I found I can even do compound angles that way. One side of the brick works for one course going one way, and the other side works for the next course going the other way. The angle changes slightly from course to course but, so far, by changing my cut every two courses it's worked well enough.

My brother thought up a simple and effective forming solution that works with an IT. It helps out a lot. I'll try to post some pics of it later today.
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36" pompeii in WI in the winter-wfo-22.jpg   36" pompeii in WI in the winter-wfo-23.jpg  
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