ᐅ Building a Living or Hobby Basement Underground – What to Consider?
Created on: 3 Jan 2018 10:43
A
abc12345
Hello everyone,
We are currently planning our outdoor area and want to build a hobby room underground.
On top of it, there will be a layer of soil so grass and flowers can grow, as well as a garden shed that will be used as a sauna.
The room should be completely embedded in the ground and covered with soil.
The dimensions are planned to be 4x5 meters or 4x6 meters. Heating and electricity will be supplied from the main house, which is not a problem.
My question is what should be considered here. I want to build it myself and I am quite handy.
So I have some basic questions like:
Thickness of the base slab?
30 cm (12 inches) masonry with hollow concrete blocks, or other materials/thickness?
Waterproofing on all sides against cold and moisture?
How to build the ceiling?
Entrance maybe next to the sauna?
Light should come into the room through a wide window with a light well, or on the opposite side, underwater in the adjacent pond through a glass panel.
I hope you can provide information, help, and tips to make this project possible.
I have already looked online without success for similar projects but found nothing. Unfortunately, I only find information about underground cellars for storing fruits and vegetables.
Attached is an amateur sketch to illustrate the whole idea.
Best regards
We are currently planning our outdoor area and want to build a hobby room underground.
On top of it, there will be a layer of soil so grass and flowers can grow, as well as a garden shed that will be used as a sauna.
The room should be completely embedded in the ground and covered with soil.
The dimensions are planned to be 4x5 meters or 4x6 meters. Heating and electricity will be supplied from the main house, which is not a problem.
My question is what should be considered here. I want to build it myself and I am quite handy.
So I have some basic questions like:
Thickness of the base slab?
30 cm (12 inches) masonry with hollow concrete blocks, or other materials/thickness?
Waterproofing on all sides against cold and moisture?
How to build the ceiling?
Entrance maybe next to the sauna?
Light should come into the room through a wide window with a light well, or on the opposite side, underwater in the adjacent pond through a glass panel.
I hope you can provide information, help, and tips to make this project possible.
I have already looked online without success for similar projects but found nothing. Unfortunately, I only find information about underground cellars for storing fruits and vegetables.
Attached is an amateur sketch to illustrate the whole idea.
Best regards
B
Bieber08154 Jan 2018 08:3611ant schrieb:
Associations in the local rumor mill pointing towards Kampusch or Fritzl scenarios included. I think that’s nonsense; nobody would build something like that with approval, right?
I would suggest creating a sketch (top view), based on the site plan of the plot, scale 1:100. That way, the required space could be estimated and the routing of pipes, etc., could be shown. According to the person asking, a supply line for the heating is already prepared (if I remember correctly); so that should already exit the house. Lots of details like that...
This is Germany... people immediately think something bad when you do something that deviates from the “norm.”
I will create and upload a sketch soon to show how I envision the whole thing.
Until then, thank you very much, and I am happy to provide more information if needed.
I will create and upload a sketch soon to show how I envision the whole thing.
Until then, thank you very much, and I am happy to provide more information if needed.
B
Bieber08154 Jan 2018 10:14Steven schrieb:
I filled the space between the wall and the curbstones with crushed stone I no longer understand this here. Do you have photos of your project?
"Crazy idea" is definitely the keyword here.
Because your wife wants to park her car in your current home gym (garage), you want to build a bunker that will probably cost many times more than the car itself?
Some people just think differently.
The most I would consider is a carport for the precious vehicle; the practical solution would be a parking space on the obviously large enough property.
Because your wife wants to park her car in your current home gym (garage), you want to build a bunker that will probably cost many times more than the car itself?
Some people just think differently.
The most I would consider is a carport for the precious vehicle; the practical solution would be a parking space on the obviously large enough property.
The plot is sufficiently large. Personally, I would also prefer a glass structure in the garden: it must be wonderful to do your fitness exercises in a conservatory or greenhouse. You wouldn’t necessarily be visible if it is well positioned and perhaps some hedges or bushes are planted. Opposite that, the sauna with an outdoor shower makes the wellness area complete.
However, there is the risk that the wife might also claim this building for herself.
Sewage is probably not an issue with the underground cellar, but it could be with the option I just mentioned.
However, there is the risk that the wife might also claim this building for herself.
Sewage is probably not an issue with the underground cellar, but it could be with the option I just mentioned.
Bieber0815 schrieb:
I don’t understand this anymore. Hello Bieber0815
A brief explanation. (I can’t upload photos from the office)
The excavation pit is larger than the future building. I calculated the foundation slab slightly larger than the building to be constructed on it. Let’s say the building will be 4 x 4 meters. I calculated the foundation slab at 4.4 x 4.4 meters. And the excavation pit is 5 x 5 meters. Now, I have limited the 4.4 x 4.4 meter area with curbstones set upright (so the 100 cm (39 inches) side is vertical). Concrete was poured into this area. Then the building was built up on top. Now there are two cavities. One is between the building wall and the curbstones. I filled this space with gravel. Then, from the curbstones down to the undisturbed soil, it was backfilled with recycled construction material (RCL). At the top edge of the curbstones, after everything was backfilled, I placed additional curbstones. Backfilled again. This was done three times in total.
Is this roughly clear?
Steven
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