Hello, I am currently working on renovating our wastewater pipe. I have exposed the basement wall and removed damaged clay pipes. A damaged cast iron wall sleeve is still in place. A custom-built inspection chamber is located about 5 meters (16 feet) away.
Question 1: The piping from the house runs with two bends because the inspection chamber is not directly in front of the house. Are these two bends acceptable? (There is a proper slope.)
Question 2: How should the house wall connection be installed? Which type of pipe and seal should be used?
Question 3: Is a soil stack always required? Which technical literature can you recommend for this type of work?
Thank you.
Question 1: The piping from the house runs with two bends because the inspection chamber is not directly in front of the house. Are these two bends acceptable? (There is a proper slope.)
Question 2: How should the house wall connection be installed? Which type of pipe and seal should be used?
Question 3: Is a soil stack always required? Which technical literature can you recommend for this type of work?
Thank you.
Vicky Pedia31 May 2020 13:07For such a minor issue, you certainly don’t need specialist literature. Bends are always critical, but 45 degrees is acceptable. The slope should be about 2%, no more! If you have water pressing against the house (and only then), you will need a so-called ring space seal, for example from Doyma. If you have a filter layer with drainage, a simple pipe through the wall, sealed with the basement, is sufficient. Pipes should generally be DN 100 (4 inches). I have to admit, I didn’t understand the question about the downpipe—maybe try rephrasing it.
Thank you, Vicky Pedia,
I will measure to see if using two 45° bends will work. Admittedly, I thought it was important to mention the soil stack. It is currently about 2 meters long (6.5 feet) and could potentially be shortened if the 2% slope of the external pipe is not sufficient. (Brief written sketch: 1. Soil stack - connects to the defective second cast iron pipe leading outside, then 3. two bends to the inspection chamber.) Hence the question of whether it is necessary to have such a pipe.
I am also uncertain which trade or specialist is responsible for this kind of work. Does a plumber usually stop at the exterior wall of the house?
Regards
I will measure to see if using two 45° bends will work. Admittedly, I thought it was important to mention the soil stack. It is currently about 2 meters long (6.5 feet) and could potentially be shortened if the 2% slope of the external pipe is not sufficient. (Brief written sketch: 1. Soil stack - connects to the defective second cast iron pipe leading outside, then 3. two bends to the inspection chamber.) Hence the question of whether it is necessary to have such a pipe.
I am also uncertain which trade or specialist is responsible for this kind of work. Does a plumber usually stop at the exterior wall of the house?
Regards
Hello
Main sewer pipes outside the building are usually installed by the civil engineer or groundworks contractor. Most wastewater authorities require external pipes to be DN 125. The old DIN 1986 standard specified a slope of 2%. In the newer DIN EN standard, I am not sure, but 0.5% is mentioned.
Olli
Main sewer pipes outside the building are usually installed by the civil engineer or groundworks contractor. Most wastewater authorities require external pipes to be DN 125. The old DIN 1986 standard specified a slope of 2%. In the newer DIN EN standard, I am not sure, but 0.5% is mentioned.
Olli
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