Plumbing:Made a big mistake?

awishawash

I think I've made a huge mistake. Was doing some work on easter saturday, putting in a waste pipe. The problem was I needed to join a 40mm to a 100mm sewer pipe below ground. I used a strap on boss to enter the sewer pipe from the side, which wasnt that tight. Theres no way it was air tight. So I did up a lean sand cement mix and encased the lot in it before covering with the membrane, insulation, steel, and after, the concrete floor. I am very worried about this turning into a nightmare problem a year down the road with waste and smells etc coming up from somewhere. What to do?:(

Corkey123

It seems from what you have done you are worrying necessarily.

awishawash

Yeah I'm very worried, but theres also the chance it'll be fine. I suppose what I'm looking for, like a child testing the water, is for someone to either condemn me or tell me everythings fine. 2 problems I can see are toilet roll etc getting caught in the incoming 40mm hole eventually blocking it, and the other one of a leakage. I went into a plumbers providers and explained what I needed to do to the sales guy and the strap on boss was the best he could come up with. In hindsight I should have put on a Y fitting with a reducer to take the smaller pipe.

davidoco

awishawash wrote:

I think I've made a huge mistake. Was doing some work on easter saturday, putting in a waste pipe. The problem was I needed to join a 40mm to a 100mm sewer pipe below ground. I used a strap on boss to enter the sewer pipe from the side, which wasnt that tight. Theres no way it was air tight. So I did up a lean sand cement mix and encased the lot in it before covering with the membrane, insulation, steel, and after, the concrete floor. I am very worried about this turning into a nightmare problem a year down the road with waste and smells etc coming up from somewhere. What to do?:(

There are specific rules on where you can hook into a soil pipe. The Homebond book gives good examples of where to and where not to.

Depending on where the vent for the soil pipe is you may have problems with the water seal on your 40mm clearing each time a toilet is flushed and then the smell comes.

awishawash

I'll have to have a better look at that homebond book. The index in its a disaster. Either way I reckon I'm on the jackhammer.