Hello

I need to replace my broken boiler and have to make a hole in the basement wall. I'm thinking of installing a door on the short side of the house since a hole needs to be made anyway. I've searched everywhere but can't find how to do it, whether it needs additional support apart from the frame.
There are windows on the long side, but it's close to the fiber cable and there's also a lot of snow sliding down there in the spring. I think it's most sensible to install the door on the short side where there's also more space and drainage can go down into a small 10-meter-wide forest area.

The house was built in 1952, eternit house with a basement.
So how do you make the opening safest, simplest, and best?

Kind regards,
Brittinger
 
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I will make a hole in a former exterior wall and will do it like this:

1. Saw a groove with the angle grinder where I want the edge of the new hole. This makes it easier to get a neat edge on the hole stone.
2. The width of the hole will be the door's module size + about 10cm, allowing space for formwork and casting on the sides where it's easy to anchor the door.
3. If there was a need to bear forces from above, I would also do a casting there, alternatively place a steel beam. If you're making a hole on the short side, the load is modest (at least if you have a wooden house) and it can be built with wooden studs or a simpler casting (say 15cm with four rebar).

Maybe you can get some ideas from this that you can then adapt to your situation.
 
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eternithus
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Hello and welcome to the Byggahus forum!

If the house was built in 1952, the basement walls are likely constructed with concrete blocks. Creating the opening on the gable is wise because it probably won't require any load-bearing alterations. The easiest way is to get help from a concrete cutter. There are plenty of companies that specialize solely in this. The end result usually looks very nice.
 
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