Waste drain testing

[cox377]

Hello guys,

I'm trying to get an air pressure test together for BC on a 110mm drain system. I have a number of 110mm bungs & an internal inspection chamber.

In the lid to the internal inspection chamber, is leaking a little air, tested with some washing up liquid & the bungs aren't brilliant either.

Is manhole grease the recommended stuff to get a tight fitting?

Thanks in advance

James

 

[noseall]

Is manhole grease the recommended stuff to get a tight fitting?

OOER MISSUS!

Are you allowed to type that kind of stuff on a family forum?

 

[cox377]

lol

 

[cox377]

anyone for anyone?

 

[^woody^]

Why have they asked for a test, do you have some sort of whacky layout?

I've never known for a test to be necessary on domestic work

 

[cox377]

Hello Woody,

Thanks for coming back to me.

This is for an extension I've been building.

110mm Soil pipe

James

 

[Nige F]

Hello guys,

I'm trying to get an air pressure test together for BC on a 110mm drain system. I have a number of 110mm bungs & an internal inspection chamber.

In the lid to the internal inspection chamber, is leaking a little air, tested with some washing up liquid & the bungs aren't brilliant either.

Is manhole grease the recommended stuff to get a tight fitting?

Thanks in advance

James

Manhole grease is a bit Old Skool - you`ll probably be better with a silicon grease on the ( I`m guessing) rubber fin seals on the internal ic . The inflatable bags are better than drain plugs for sealing pipes

 

[noseall]

The only test we EVER did was one job down in London many moons ago and i have been around domestic extensions for 31 years.

This was a wet test whereby you plugged the holes and filled the system.

Internal screw down double seal lids are air tight in their own right. And it rhymes.

 

[cox377]

Surely BC always do a final drain test?

Please excuse my ignorance on the subject

Best Regards

James

 

[noseall]

Surely BC always do a final drain test?

No they don't.

 

[Nige F]

So BC haven`t actually said - "we will come and want to see a test on x part of your drains " Nose , are they air tight in their own right even when they`re full of s***e .

 

[cox377]

Hello guys,


Thanks for the responses.

BC said, they would see a test at the end. This was after one of their first visits.

I spoke to the BCO yesterday, he said if below ground it would usually be a water test, and if above, air.

This was via email and the BCO couldn't really remember the application.

J

 

[mikric]

Underground test fair enough but air test above ground is a bit above and beyond.
If you want to push it and risk upsetting your BCO, ask him under what legislation he is using for his request for YOU to do a drain test.

 

[freddiemercurystwin]

Nose , are they air tight in their own right even when they`re full of s***e .

That's a bit harsh Nige, some of the BCO's I've dealt with have been alright.

 

[polesapart]

Air test above ground used to be standard but BCO's aren't what they were.
Soils and drains are easier to install leak-free with modern materials than with the clay/cast iron of many years ago.
Unless your manhole is internal to the building (and therefore specified as "double-sealed") the fact that it leaks air under test matters not.