Hi,

maybe a bit of a strange question.

But need to make a hole in an old bank vault from the 80s. The wall is 500 mm thick with 3 layers of 12 mm reinforcement.

The hole should be 2100 x 1200. Looking at renting a wall saw with a 1200mm blade, estimating 5-7 days of work if we are 2 people. The volume is 1.26 cbm and the weight is about 3.1 tons per hole. Could move it with an excavator once we've cut, but of course, it's easier to cut it down into smaller pieces. Have no experience with this before, but does anyone have any ideas?

Or maybe some other way to make the hole, but they should look quite nice, of course, one can plaster afterwards if it's jagged.

Sorry, don't have ä, å, and ö on the computer.

PS, something with dynamite or blasting won't work as it's located inside an existing building..
 
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TRJBerg and 3 others
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I would ask for a quote from a drilling company, I don't think it's something you should take on if you don't know what you're doing...

@useless No, I can't do it either, so it's not something I would even consider taking on, plus it’s a floor saw I have, not a wall saw 🙂

I would guess that it's done with some type of wire saw and cut into several parts directly
 
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Roger Fundin and 12 others
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Q
I InsidersUnited said:
No idea, but in the P3 documentary about the coup against Gotabanken in Alby, you'll find a lot of useful information for you 😎

[link]

[image]
Exactly my thought 😂 they describe it pretty well! Also how you solve it if you don't have access to water.
 
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Workingclasshero and 3 others
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nino nino said:
I would request a quote from a core drilling company, I don't think it's something you should attempt if you don't know what you're doing...
After receiving quick and relatively cheap help from such a company for the garage floor (20cm), I learned two things. 1. It's nice to get help 2. I would never in my life hold a machine with a blade that is 60cm in diameter, especially not if it's to be mounted on the wall... hell if it starts moving.
 
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WernerGranbergsdal and 6 others
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sysmali
If you need a discreet yet fast driver, send a PM. Only takes 5%. Might be able to provide some references if they're available.
 
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MLA79 and 94 others
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no dynamite... "now harry will be sad :("
 
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4774 and 12 others
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T toolman77 said:
Maybe time for the chainsaw?

[link]

Or just drill a lot of holes with a core drill
Unfortunately, it works very poorly in reinforcement. The chain is also quite easy to break and costs a bit.
 
U
Feels like drilling several core holes to remove the majority and then tidying up the edges afterwards.
 
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Workingclasshero and 2 others
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I have, unbelievably, done pretty much the same thing. We converted an old bank vault into a toilet. We had help from someone who worked with drilling. What we did was use a fixed machine with a core drill. We made several smaller holes around "boulders" that we then removed manually. It cost a fair bit for the drilling company, a completely ruined sack truck that buckled, and some dignity.
 
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Patrik440 and 10 others
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Dad drove away a vault from the 1920s, 40cm concrete but sparsely reinforced. A good Hilti two weekends. Made quite a bit of dust…
 
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Roger Fundin and 3 others
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Even I, who work at a demolition and cutting company, would get help with that. I've been involved several times with wall sawing and know the basics of how a wall saw works and is mounted. It's not just a matter of starting and going, especially not in a bank vault wall that's so thick with so much reinforcement. Operating a floor saw in a regular floor slab or foundation is easier to do yourself, but setting up and handling a wall saw, I would hardly recommend anyone who's never done it before to do.
 
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Roger Fundin and 13 others
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L lp40 said:
Hi,

maybe a bit strange question.

But I need to make a hole in an old bank vault from the 80s. The wall is 500 mm thick with 3 layers of 12 mm reinforcement.

The hole should be 2100x1200. Looking at renting a wall saw with a 1200mm blade, estimating 5-7 days of work if we are 2 men.
The volume is 1.26 cbm and the weight is about 3.1 tons per hole. I could move it with an excavator once we've cut it, but it's clearly easier to cut down into smaller pieces.
I have no experience with this before, but does anyone have any idea?

Or maybe some other way to make the hole, but they should look quite nice, of course, you can put tidy after if jagged.

Excuse me, I don't have ä, å, or ö on my computer.

PS, something with dynamite or blasting won't work as it's inside an existing building...
What do you have in it?
Diamond drill or diamond cut.
1 man 3-3 hours! Have a fire extinguisher or hose nearby in case a fire should start.
 
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