Very tall free-standing pole (for stove-pipe support)

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

Here's a couple mockups of potential designs, just for show. I can knock out any number of 2' sections so I have tremendous control over the height, but I only mocked up a few options in the attached image: 11', 15', and 19'. The pipe will be a tad bit thinner than shown since I made the images by extending the current pipe in the left image which is 10" exterior and the new pipe is 9.25" exterior.

Anyhoo...just kicking ideas around and trying to decide how high I need to go to get the smoke reasonably high over the neighboring yard.

For reference, the higher ground behind the retaining wall in the photos is the ground height of the neighboring yard. Admittedly, that means the top of the current stove pipe is only about six feet off ground level and the neighbor's house is probably about twenty feet from the oven...so I really would like to raise it up...maybe the full 19' isn't necessary however. The mockups really look ridiculous; I didn't realize 19' was so high. I'll give this some thought.

To clarify, the bottom of the stove pipe is three bricks down from where the stove pipe visually "ends" in the photo. That top three-brick layer is a "shoe" the chimney pipe sits in. If you look at my oven-construction thread you'll see how the vent is put together.

Cheers!

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

In the spirit of Tscarborough's mockup from an earlier post, I made my own, measured as precisely as possible. Mine shows the two-foot section lengths that are available for me to work with and therefore make pretty clear how I could modularly modify this design if I choose.

I guess I might just make this thing shorter even though I have all the pieces. I would hate to make it shorter and then not have it be tall enough...whatever that means in the context of this situation.

Thanks.

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

OK, I went and looked at your oven again. You can forget that other than with 2 sets of guy wires, one at the top with about a 60 foot diameter, and another midway with about a 40' diameter.

That's a great mock-up image. Thanks. So you don't think the same effect can be had with a flagpole and a few conventional horizontal stove-pipe-roof "braces" like I see all over town? You think that won't work?

My wife simply will not let me string cables all over the yard, just not an option and I don't entirely disagree with her. I'm more likely to put **two** flagpoles (one in the same place, back corner, and a second at the other back corner) than run guy wires all over our back yard –– that's just the facts of my circumstances.

I could go a little shorter too. The pipe is in two-foot sections. It's just that, I figure if I'm going to do this, I might as well go for broke and use all the pieces I have. I got two extra sections (four feet) more than I expected. The guy who sold it to me advertized it as seven sections and then found two additional sections at the last second and tossed them in for no additional cost.

Hmmm...

[TropicalCoasting]

Re: Very tall free-standing pole (for stove-pipe support)

Does it have a flashing red light on top for low flying planes?

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

OK, I went and looked at your oven again. You can forget that other than with 2 sets of guy wires, one at the top with about a 60 foot diameter, and another midway with about a 40' diameter.

[Faith In Virginia]

Re: Very tall free-standing pole (for stove-pipe support)

kebwi, I looked at your idea again it was not a bad idea to start with. I thought you were looking for alternative ways

Now back to your idea. Looks good but I would make a few tweaks. For your idea I would use a large diameter pipe with thick walls. 20' feet out of the ground is not that big of a deal.

If you can get your hole 5' down would be better and make the bottom of your hole large like 2'x2' then get your pole standing in it's place and fill the hole with like 8" of concrete. Fill your hole with dirt and pack it in. Then add a slab of some type at ground level around the pipe, The upper slab in the range of 4'x4'x6" thick.

With that set up that pole will NEVER move an inch.

Now I'm not sure about your connection from the pole to the stove pipe. It may work and it may not. I like parts of Tscarborough idea on rigging. You may need to have two points of stability to the stove pipe. So if you use your single pipe idea and run a horizontal bar (think of a tall ship mast) then secure the stove pipe to the two ends of that horizontal bar. I don't imagine that horizontal bar needs to be overly large or long just center a 4' bar would be fine.

Hope that helps

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

Sorry for the jargon, just trying to be precise. Normally a stack that tall would be enclosed in a chase and thus supported. Your main issue is going to be wind, and that type of pipe is not strong enough to be self supporting at that length.

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

If it screws together, that is good enough, what would be key with a stayed stack would be the connection at the base. It may not work after all.

Well, now I don't know what a "stayed stack" is. This thread isn't going very well for me. I simply have no idea what's going on anymore. Half the responses in this thread introduce new (and I would suspect unnecessary) industry-specific jargon. Isn't it possible to answer these questions without requiring all members of FB to already have years of industry experience in very domain-specific terminology? I'm sorry I have to keep asking stupid questions. This has got to be at least the third time in this thread alone that I cannot understand an answer because it includes some esoteric term. Is that really necessary?

Is this going to work or not? Can I put a tall stove pipe on a Pompeii oven or not? It sounds like there are a lot of concerns and objections being raised. Is this plan just not going to work?

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

If it screws together, that is good enough, what would be key with a stayed stack would be the connection at the base. It may not work after all.

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

Yikes, I have no idea what you're talking about. What is a stressed main member? The pipe pieces screw together like conventional double-walled pipe. Are you saying I shouldn't just screw them together and put them up on the oven with lateral support? Are there additional steps I need to take which I haven't considered yet? Someone mentioned a damper, so I'm doing some research into that.

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

You would have to, as that design requires a stressed main member.

[kebwi]

Re: Very tall free-standing pole (for stove-pipe support)

It is not hard to do, with the stack he is talking about it would work with three wires on 2 sets of stays. The hard part would be ensuring the continuity of the stack, i.e. the sections would have to be welded together. 40 to fifty foot outriggers (on tapered 3-4" butt size aluminum poles) are common, and they are mounted to boats subject to extreme wave and weather conditions and high lateral loads. They work.

Wait, are you suggesting I weld the pipe sections together?!

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

It is not hard to do, with the stack he is talking about it would work with three wires on 2 sets of stays. The hard part would be ensuring the continuity of the stack, i.e. the sections would have to be welded together. 40 to fifty foot outriggers (on tapered 3-4" butt size aluminum poles) are common, and they are mounted to boats subject to extreme wave and weather conditions and high lateral loads. They work.

[Faith In Virginia]

Re: Very tall free-standing pole (for stove-pipe support)

Tscarborough , That's cool idea, It would work great on tall and thin poles to keep the weight down.

Also on the bright side ( pun intended) think of all the Christmas lights you could run on that rigging.

[Tscarborough]

Re: Very tall free-standing pole (for stove-pipe support)

Like this: