pbengtsson said:
"Holes in the ground" is probably more accurate nowadays, but the stories I've heard include tunnels, atom-proof stations, etc. :-) Wow, now the cards will be revealed.

I don't have any close ones at all (about 500m) other than myself (25 meters away).
The program "Secret Swedish Rooms" on Monday is about the Muskö base. Mountain rooms the size of the old town in Stockholm.

It can already be watched online.
http://svtplay.se/t/102776/hemliga_svenska_rum
 
Guzzi said:
There are those who pay enormous sums for fill materials ;)
Removed about 8 tons of stone when I built a veranda last summer, searched on Blocket and found someone who needed fill material. It became a win-win solution, she needed it, I wanted to get rid of it. Spot on.

Good luck!
 
Building the garage into the rock is actually not an impossibility.
I have looked into wire sawing, and it might cost around 200,000 for 30m2 (extremely rough estimate +-100,000).

I will see what the municipality says about building permits, etc.

The remaining problems to figure out are how to find a quality supervisor (hepp) and where to put a block of 6x3x5m (it is sawn out in one piece).

There are different ways to seal the roof, one is tunnelduk.
 
C
You can probably be the quality manager for a garage yourself.
 
cheetah1 said:
You could probably be responsible for quality in a garage yourself.
Even when there is 10 m of solid granite over it?
 
KA does nothing, he costs money, but only shows up at one of the ten houses I build..
Damn, I'm so envious if you complete the idea..
 
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I've been "KA" (in the category you just mentioned :-)), but right now I feel like I'm on shaky ground.
Who do you contact to ensure the mountain doesn't implode?
Anyway, it's fun to explore a completely new way of building.
 
Shouldn't TGB/Styrud be able to provide a statement on that? I believe TGB was sometimes hired for geotechnical investigations. If I remember correctly, they were involved before the start of the Hallandsås project but withdrew because they considered the rock to be too poor, or they were just hired to provide an assessment...
So they should have a tunneling engineer on their payroll, right?
 
The little knowledge I have about mountains says that it's not something to take chances with.
But I believe that if the whole thing is realized, those who are to cut will make the best assessment. Based on the info I've received so far from companies that deal with this, they can "see" what is possible.
 
Evaluating mountains is something a geologist does, I learned today. But an apparent rule of thumb is that the thickness of the covering (rock over the roof) should be 1 - 1.5x the width.

Blasting can be done, but if the covering is borderline, a shaft is often made and a roof is cast.

There are more roof sealants, one is injection, where the rock is filled with cement and some other chemicals beforehand. There is also apparently a silicon-based paint that seals well. If you want clean rock surfaces, injection is the best option (e.g. http://www.besab.se/Page.asp?PageId=158).

The municipality I live in did not require a building permit since the rules for out-of-plan are quite generous here. But I live in a nature reserve, and here it's not as simple. So questions have been made to the county administrative board about whether exceptions can be granted.

To add insult to injury, the garage is currently situated on land that must be surveyed by an archaeologist before any digging can commence.
 
So you're getting started with building? Would make a super cool project thread!
 
JLAINE said:
So you're about to start building? That would be a super cool project thread!
Well, right now I'm trying to find out the conditions, but it seems promising. However, I think it will fall through because of the nature reserve (and I respect that).

Emotionally, I'm excited to do it.
 
Hmm, intuitively one might argue that the minimal environmental impact would be to just carve a hole into the mountain rather than have a standalone building which requires maintenance and painting, etc. Additionally, it will hardly be visible since, as I understand it, only a garage door will be visible from the entire structure, which can also be in a neutral color if desired or even camouflage-colored ;)
 
Aftonbladet tomorrow: Batman stopped by the county administrative board
 
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