I am currently renovating an old outbuilding in to a two bedroom house. It is all ground floor and I have put the drainage in myself at the right depths and falls. My question is have I laid it out with the stack in an appropriate position. I am happy with it outside the building as shown in the image found at the link below I am not an expert so thought it best to ask the expertsny advice regarding this would be much appreciated
Drainage Stack and Run