Brooke Stabbert
New Member
Hello,
I am expanding a garage in Seattle and preparing for it to be converted into a backyard cottage (right now I am only expanding the garage per my permit). I'm planning for the addition of a kitchen and bath. The back of the main house has an existing 3" clay line that picked up the roof leaders and then connected to the 6" side sewer line that runs out to the street (in Seattle storm water and sewer is a combined system). The clay line is in good shape and flows well (it has been scoped). It is 24" deep where I plan to connect to it, which is about 6' before it joins the 6" side sewer main, but I'd refer not to have to tear up any more concrete to get to the 6".
Seattle minimum side sewer size is 4". Would this new connection from the garage be considered a side sewer and thus have to be 4"? Or is it just a branch feeding into the main 6" side sewer, so it only needs to be big enough to handle the drainage units form the garage, for which 3" would be sufficient. I hope the 3" is sufficient for this, as I'd really like to not have to break up more concrete to get to the 6" line.
Because the roof leaders were previously rerouted around the other side of the house, this section of clay is only picking up one leader from the roof. I can connect right into the open flared end of the clay line if that is allowed.
I was hoping to run a 3" ABS or PVC from the garage (serving one kitchen sink, one bathroom sink, one toilet, and a shower). Is there any reason I cannot connect the new line to the existing clay? What is the preferred method for mating? I would assume I should cut the clay flange off and use a Fernco.
Any and all help is appreciated.
Brooke
I am expanding a garage in Seattle and preparing for it to be converted into a backyard cottage (right now I am only expanding the garage per my permit). I'm planning for the addition of a kitchen and bath. The back of the main house has an existing 3" clay line that picked up the roof leaders and then connected to the 6" side sewer line that runs out to the street (in Seattle storm water and sewer is a combined system). The clay line is in good shape and flows well (it has been scoped). It is 24" deep where I plan to connect to it, which is about 6' before it joins the 6" side sewer main, but I'd refer not to have to tear up any more concrete to get to the 6".
Seattle minimum side sewer size is 4". Would this new connection from the garage be considered a side sewer and thus have to be 4"? Or is it just a branch feeding into the main 6" side sewer, so it only needs to be big enough to handle the drainage units form the garage, for which 3" would be sufficient. I hope the 3" is sufficient for this, as I'd really like to not have to break up more concrete to get to the 6" line.
Because the roof leaders were previously rerouted around the other side of the house, this section of clay is only picking up one leader from the roof. I can connect right into the open flared end of the clay line if that is allowed.
I was hoping to run a 3" ABS or PVC from the garage (serving one kitchen sink, one bathroom sink, one toilet, and a shower). Is there any reason I cannot connect the new line to the existing clay? What is the preferred method for mating? I would assume I should cut the clay flange off and use a Fernco.
Any and all help is appreciated.
Brooke