Which empty conduits are under a precast concrete garage with strip foundation

If the pipes are not fixed with concrete, you have to come up with something to firmly connect the pipes to the ground. They really have to be secure, otherwise you won't be able to pull anything through. Kabuflex also works, of course, but it would be even more difficult to fix on loose soil. If you bury the pipes, I would then concrete the trench including the pipe so that they hold securely.

If the pipes are not fixed by concrete, you have to come up with something to firmly connect the pipes to the substrate. They really have to be tight, otherwise you won't get anything through. Kabuflex is of course also possible but would then be even more difficult to fix on loose ground. If you bury the pipes, I would then concrete the trench including the pipe so that they hold securely.

Thanks. Would you then use flexible drainage pipe or bury it or rather KG pipe? Both aren’t really sealed anyway ;) For example, I could bury the new KG pipes as deep as possible and then butt them against those installed in the foundations, seal the connection a bit (e.g. with fleece) and then fix it roughly with concrete all around.

I would rather use a KG pipe, it will be easier for you.

I would rather use a KG pipe, it's easier for you.

So, it has now become a KG pipe after all. However, I have not pulled anything through yet. So it remains exciting ;) Thank you for the help.

So, it has now become a KG pipe after all. So far, however, I have not pulled anything through yet. So it remains exciting ;) Thank you for the help.

You're welcome and good luck with pulling through!