A partially exposed electrical cable runs through a hole in a concrete floor, surrounded by soil and construction debris.
As the title suggests, my question is whether I dare to cut the foundation to get the electric cable to a "better" level? The cable, as shown, goes through a door opening.

The cable is the supply to the central unit in the house. I plan to insulate and lay underfloor heating in the new slab that is to be cast. It seems like it would be easier if I could get the cable under the foundation.

Of course, the alternative is to contact Vattenfall to get help disconnecting the cable, pulling it back home, and laying it where I want it, but it would be nice if we could avoid that.
 
S
Yes, I see no problem with cutting a bit to lower the cable. Just make sure to create a barrier between the cable and the cut.
I see two cables, which is which?
 
S DanielF said:
Yes, I see no problem with cutting a bit to lower the cable. Just be sure to create a barrier between the cable and the cut. I see two cables, what is what?
The cable I mean is the one that continues into the cement pipe. What you might think is a cable is the incoming water pipe, it should naturally be replaced.

Naturally, I will try to avoid cutting the electrical cable.

So, you don't think there's any danger? The sole shouldn't be load-bearing in the doorway, right? I have cast support under the sole at the sides of the door. All fill material is sand, in some places, the sand has sunk so the sole is not in contact. My plan is to cast again in the "cut" if I choose that route.
 
Staffans2000
Neither would I have made a big deal out of this. Just tone it down.

Facta, non verba!

Staffan
 
The primary function of the sulan is usually to serve as the foundation for a wall that apparently no longer exists. It may be reinforced, but it is not entirely certain.
 
  • Like
MagHam
  • Laddar…
J justusandersson said:
The primary function of the sole is usually to serve as a foundation for a wall that obviously no longer exists. It may be reinforced, but it's not entirely certain.
It is reinforced. The wall continues on either side of the doorway.

But then maybe I can even cut away the entire part of the sole in the doorway? That would definitely be the best option.
 
Raise your gaze a bit to ensure you're not causing any other problems if you cut the footing. It's a little difficult for us outsiders to assess that. Generally speaking, one should not excavate under footings, especially if they rest directly on clay. There's a risk of weakening the foundation. In the past, footings were always cast on unexcavated ground. If you want to be on the safe side, cut the footing, move the cable, splice the reinforcement, and pour it back.
 
Mikael_L
Well, it's probably quite unlikely that there are tensile or compressive forces in that "sula" ("sole") beam, so if it has support from underneath (so it doesn't tip over), there shouldn't be any consequences from cutting away a piece at the door opening.

However, I'm not very knowledgeable about construction, especially for older houses, so please wait for someone else who agrees with me. :)

But my opinion, in any case, is that it likely bears some kind of load that prevents cutting off a small piece there.
 
S
I mean, that sole is just a casting remnant from when the sole for the wall was cast. It served as a support for the threshold at most. Just because they chose to have a door there instead of a wall didn't mean they bothered to break the casting there. It was probably easier to extend the reinforcement past the door opening and cast past the door. All the door openings in my house have a sole underneath them.

Soil masses keep the sole in place, there are no side loads on the sole, but you should be careful if you cut above the door as there are often beams that hold the house together.

Chisel/cut, just do it.
 
  • Like
one-
  • Laddar…
S DanielF said:
That sole is just a casting remnant from when the sole for the wall was cast. It served as support for the threshold at most.
I wouldn't see it so lightly. It has helped to stabilize the wall, which could have been important if the doorway was near the end of the wall. TS can best assess this himself. It's best to be on site to see the whole picture.
 
S
J justusandersson said:
I wouldn't see it quite so frivolously. It has helped stabilize the wall, which could have been important if the doorway was close to the end of the wall. TS is best to assess this himself. You really need to be on-site to see the whole picture.
Nothing will happen if he cuts it, lays down the cable, and pours a slab in the room.

But for those who want both a belt and suspenders, you can take a couple of sturdy flat irons and anchor them on both sides of the doorway, on each side of the wall just above the cable with threaded rods through the walls. Break/cut away the sole, lay down the cable, cast a new sole with new reinforcement, remove the flat iron.
 
I become more concerned when I see undermining of the sole, or floors that are soon hanging in the air due to collapse on the sides.
 
  • Like
Anna_H
  • Laddar…
Mikael_L
I also see bigger problems and risks with what has been excavated below soles/slabs.
 
S
M MagHam said:
I get more concerned when I see undermining of a foundation or floors that are about to hang in the air due to side collapses.
He hasn't done that, it's a concrete floor you see hanging there.
 
S DanielF said:
He has not done that, it is a concrete floor you see hanging there.
That is correctly understood. What you see in the front to the right is a concrete floor that has been partially sawed and chiseled away. I do not understand how I could do this any other way when I need to replace water and sewage.

I have been careful not to dig lower than the foundation. I have also done auxiliary casting in several places where I felt the material under the foundation had subsided. If I hadn't been careful or thought it through, I wouldn't have asked the question about the foundation through the doorway from the beginning:)

But I am grateful for all the thoughts and responses I receive.
 
  • Like
Mikael_L
  • Laddar…
Vi vill skicka notiser för ämnen du bevakar och händelser som berör dig.