Hole for Crawl Space

[rqx]

Yes, in the worst case, it can be done from the outside, but I avoid it as long as possible.

Thank you so much for the pictures! It looks very nice, good to see how it looks.

Yes, I have read that thread, but according to replies in this thread, you can't do that because it undermines the bjälklaget?

 

[Needas]

Yes, in the worst case, it can be done from the outside, but I avoid it as much as possible.

Thank you very much for the pictures! Looks very nice, good to see how it looks.

Yes, I have read that thread but according to replies in this thread, you cannot do that as it would undermine the joist?

After reading the thread, I spoke with a hole maker I've been collaborating with for a while and mentioned your concern, he said, "openings in erge-joists we have been doing for 30 years

Yes, in the worst case, it can be done from the outside, but I avoid it as much as possible.

Thank you very much for the pictures! Looks very nice, good to see how it looks.

Yes, I have read that thread but according to replies in this thread, you cannot do that as it would undermine the joist?

Since I have the original drawings, I thought it might be useful reading!
It states what type of reinforcement you need for the opening if you do it from the inside.

 

[seniorkonsult]

Please explain why I will pierce a beam if I go down through the garage slab, but if I go from the outside, it's no longer a problem?

I assume the garage slab is reinforced with a vot, maybe 30 cm high. Then you also need to go through the torpargrundsväggen (anyway). If you make a hole somewhere else in the wall facing the garden, it's "only" the wall you need to pierce. Measures must be taken to divert surface water away from the wall.

 

[justusandersson]

With access to the original drawings, there are conditions to perform a controlled hole drilling. However, the work to suspend the remaining slab parts is not entirely uncomplicated. Even with these conditions, there remains a risk that the hole drilling is unsuitably positioned in relation to the floor plan. Working to transport material out from the crawl space through a hole in the joist is hardly ideal.

 

[rqx]

Thank you for the pictures, useful information

Thank you, I understand!

Let's hope I'll get the original drawings when we gain access to the house, so we can make a proper assessment. We have photographed it, and it seems to be a good environment, but maybe we want a moisture meter and install ventilation/dehumidifier. Maybe a plastic mat as well.

 

[attefall]

Stupid question maybe, but the thread seems appropriate. Is there usually reinforcement in both the lower and upper concrete layer of an erge-bjälklag?

 

[rqx]

As I understand it, the lower layer is the ergebjälklaget, then in my case comes styrofoam, and then a slab is cast. I have not discovered that it would be reinforced (yet).

 

[attefall]

As I understand it, the lower layer is the ergebjälklaget, then in my case comes styrofoam, then a slab is cast. I haven't discovered that it would be reinforced (yet)

Sounds good. Can one assume that the cast slab above doesn't have any load-bearing function? Or does it usually distribute loads to the edges?