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Post by SA Hunter on Apr 26, 2017 20:19:22 GMT 10
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Post by SA Hunter on Apr 26, 2017 20:20:05 GMT 10
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Post by graynomad on Apr 27, 2017 22:07:33 GMT 10
Here's #3
I think this will be a train wreck, let's hope nobody is inside when it happens.
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token
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Post by token on Apr 28, 2017 8:42:49 GMT 10
Here's No.4 or the update...
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Deleted
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Post by Deleted on May 1, 2017 22:03:08 GMT 10
Thank you for posting those videos, they certainly show you what not to do.
I could not imagine that shipping containers would make a cost effect underground bunker. The walls are not designed for side loads so must be strengthened. The floors are ply wood so have to be moisture proofed......why not do the job properly dig your hole add the drainage, then concrete floor, concrete walls and concrete slab roof, and back fill. Cement delivered is around $120 cubic meter.... so it is hard to beat.
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Post by Peter on May 1, 2017 22:49:38 GMT 10
...remembering of course that the reinforcing and waterproofing required will significantly add to the cost of the concrete. But still - I'd rather a concrete bunker than a buried shipping container.
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Post by selfsufficient on May 2, 2017 2:25:31 GMT 10
They can work efficiently with the right planning. Something to think about is that the container is already a concrete form work. Many shelters in the US build a steel box, brace it then fill the surrounding hole with concrete. Concrete prices vary drastically depending on where you are. If you go for the closest concrete batcher, then he will remember what you are building and joke about it at the local. If you have the right engineering tools, then the container is a good source of materials to build a good structure from. The best design I have seen with a container is to turn them upside down in the hole. You then build a wooden raised floor on what was the roof. You then apply suitable reinforcement for the new roof. To fix the walls weld 100x100 angles into the corrugations of the walls at 500mm spacings. this allows you to install insulation and utilities then clad. To make it stronger again weld a large square section the length of the container at the midpoint. This can be designed to be a ventilation duct as well or exhaust duct. Lots of other ideas to make a cheap bunker
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token
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Post by token on May 2, 2017 8:12:51 GMT 10
Thank you for posting those videos, they certainly show you what not to do. I could not imagine that shipping containers would make a cost effect underground bunker. The walls are not designed for side loads so must be strengthened. The floors are ply wood so have to be moisture proofed......why not do the job properly dig your hole add the drainage, then concrete floor, concrete walls and concrete slab roof, and back fill. Cement delivered is around $120 cubic meter.... so it is hard to beat. They were good vids to learn from and see what needs to be done step by step for sure, and yes concrete might be the preferred method for some IF you can get it at $120 a cube, but out in the bush you can pay a whole lot more, for instance, my area is $275 a cube + gst... Also, unless youve got the form work, or blocks, your buying prefab concrete walls, and no clue what they are going to cost to get out here. So the containers can end up being a better option, and there are ways to get them right for burying where they will handle the load and moisture without an issue as plenty of people still use them for sure. But yes, i agree that a slab and walls etc is a way better option if you can do it.
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ygidorp
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Post by ygidorp on May 2, 2017 12:14:16 GMT 10
Haven't had the chance to watch all of them just yet with audio, but selfsufficient has hit the nail on the head. You could use it as sacrificial formwork for placing your concrete, or strengthen it for the purpose intended. But not use them long term in their untouched form.
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Deleted
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Post by Deleted on May 5, 2017 19:40:32 GMT 10
Hi all, interesting comments, have none of you seen the cement industrial buildings and shops. Most of them have the walls poured on site and then stood up by crane, easy as, if you remember to put the lifting holes in when you pour the cement. In fact except for the floor of your bunker, all the walls and roof could be poured nearby and moved into position thereby limiting anyone's knowledge of proceedings. For that matter on a small bunker you may not need a crane and just hire some lifting gear from the hire joins. Lets face it shipping container or not cement will need to be used if you don't want it being your casket. But make sure drainage goes in first so it is a dry hole your bunker will be in.
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ygidorp
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Post by ygidorp on May 8, 2017 0:28:19 GMT 10
Tilt-up construction is not my favourite is quality control can be an issue.
That said, it can totally be done given the right design and construction. As the connections for tilt-ups are usually pinned, you want to make sure the panels are arranged in a fashion to provide adequate bracing to perpendicular panels, otherwise you can end up literally building them like a house of cards.
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Post by Peter on May 8, 2017 8:59:50 GMT 10
I've built a number of tilt up buildings, and as ygidorp stated, bracing is critical. The gaps between panels would need to be especially well sealed if erected underground, and you'd also need to ensure the panels don't bend inwards under the lateral force of the sand outside.
Another important step would be sealing the concrete well; not only to prevent damp from entering the room, but also to ensure moisture can't get to the steel reinforcing to promote rust.
I'd be careful about using hire-shop lifting equipment; those panels are surprisingly heavy yet they get blown about very easily. I'd want a machine that could handle these forces.
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grumble
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Post by grumble on May 8, 2017 9:00:47 GMT 10
The best usage I have seen of a shipping container was as a storm shelter for cyclones it was a forty footer fully lined with a 12/240volt system in it It had designed from the ground up to being occupied long term in the event of a major cyclone destroying all the local infrastructure
basic outline of it was the shelter was above ground in a man made hill it was about 2 meters above ground level then earthen walls around it and over the top along the sides of the container there were walls made of corrugated iron and railway tracks for bracing it was well built and had a lot of thought put into it no cyclone was ever going to move it as the whole thing was pretty much buried but the ground pressure actually sloped away from the container due to being built raised up rather than below ground level all round it was very nicely built and quite comfortable I wouldn't mind living in it the best thing was they took a lot of idea from caravans and boats when designing it on the inside
now for what its worth this is the idea of what I would like
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Deleted
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Post by Deleted on Jun 4, 2017 8:40:05 GMT 10
Hi, I have just found the 'Private Bushfire Shelters 2014 Performance Standards' are on line. They will come up with a simple google search.
I took a look thinking if I built a shelter for one thing it would be good not to be a death trap when used for something else, so might interest anyone with the bunker mind set.
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