Underground drainage leak

[jaydebruyne]

So it's staying steady / not draining over an hour ish ?

Correct. It’s been at the same level now for about 45 mins and I know it’s just a 2 min test so to me it’s all good?

 

[ShaunCorbs]

Yep if it hasn't dropped after half an hour your golden

 

[jaydebruyne]

Yep if it hasn't dropped after half an hour your golden

Ok.. so just been called back to custards reporting a huge leak (I left the run bunged and filled ready for inspection tomorrow as I wasn’t going to be there).

Turns out that when you flush the 1st/2nd floor toilets it causes the ground floor toilet to overflow. Now, this must mean the pipework is connected. But I was told it had its own run??? Also could explain why it drained and drained until it filled up properly.

Wtf????

 

[ShaunCorbs]

Maybe they do have there own run but teed before the manhole

This is why air testing is better

 

[jaydebruyne]

Maybe they do have there own run but teed before the manhole

This is why air testing is better

That makes sense.
But to do an air test don’t you have to remove one of the toilets?

 

[mfgs]

Sounds like it is teed into the same run otherwise no way it could go back up past a bung. To be honest I always air test soil, although mainly when new as opposed to existing.

 

[ShaunCorbs]

I just use a test bung/bag in the toilet

 

[jaydebruyne]

I just use a test bung/bag in the toilet

Gonna find my air test kit I think. Not sure the bungs I have will fit in the pan, they’re metal with a rubber ring in between and you turn a butterfly screw to push the rubber out to fit the pipe

 

[ShaunCorbs]

Gonna find my air test kit I think. Not sure the bungs I have will fit in the pan, they’re metal with a rubber ring in between and you turn a butterfly screw to push the rubber out to fit the pipe

Yea there the pipe ones

The ones I have look something like this

Horobin Drain Air Bag Canvas (4, 6 & 9in Options) Inflatable Pipe Blocking, Bung | eBay

 

[jaydebruyne]

Yea there the pipe ones

The ones I have look something like this

Horobin Drain Air Bag Canvas (4, 6 & 9in Options) Inflatable Pipe Blocking, Bung | eBay

What do you blow this up with as they’ve got 1/2 inch females connections on the taps?