Underground drainage from gutter for garage, is it pitch fibre?

[TheJay]

I've been clearing a raised slab area so that the ground can be levelled and existing slabbing extended. As I was doing this, I came across this pipe. At first, I thought it was copper because of the noise it made when tapped, how cold it felt and even the look of it.

 

I had inadvertently made a few holes prior to realising this was here.

 

So it turns out that it's the pipe for the waste water collected from the guttering on our garage, it comes down and goes from right to left and straight under the garage. It's right in the way of us maximising the slabbing area and I don't know why it was designed like this to come out from underneath and then go back under.

 

Within the holes I made, there are signs of fibres. They look to me much like glass fibres you get within coarse fibreglass (not the stuff in insulation). 

 

 

So I want to lower the hole for the drainpipe so it's much closer to the level of the other slabs and also want to try and keep it out of the way if possible. What are your thoughts?

Edited May 9, 2022 by TheJay

[Big Jimbo]

If that pipe is collecting rainwater from your garage it must go to a soakaway somewhere ? I would think about connecting the downpipe to a new soakaway if you can. Also try and get it 5 meters away from any building. You could use one of the crate systems to provide a new soakaway.

[TheJay]

Thanks for your reply Jimbo. I have no idea where exactly it goes, other than under the garage. The road around the back of our property has no visible drains or manhole covers, which I have always thought was strange.

 

The waste water from our bathroom goes to a different pipe that also goes through the back garden to I have no idea where. I only know because when I put a concrete post in, I nearly broke through a clay pipe following the line of the slabs.

[Conor]

Assume it's asbestos and take the appropriate precautions and get it tested.