main drain

I have started basement kitchen project. Per main designer/architect (my wife) request is to install kitchen sink at about 112" away from sewer main drain line on the left side of the picture. I need 1/4" of slope per 1 foot; since I am at about 9 1/2 feet away - I need it to be at around 2...

Today I finally caved and had a plumber replace my main 4” cast in the basement. On top of being very messy and not cleaning up, they left me with a leak. I assume they caulked this with lead and oakum. Is this the preferred method? Why not just cut it slightly before the wye and use a Fernco...

Hi, I hope someone can help? We’ve moved into a new house and the plumbing has been terrible. Everything leaks! We recently removed the toilet boxing due to all the floor being rotten through due to a leaking sink. Behind the boxing we found damp issues too. Can anyone help me pin point what...