Hi my pipes system is a bit of a bodge as the old owner of the flat rerouted them and made a mess of them. Here are pictures of them and corresponding roof vents. The soil stinkpipe stak and soil pipe have a blue arrow anda the pipe I fell on has a red arrow, and it leads into another grey 4 inch pipe but thats hidden so i am really worried i have caused damage. The elbow of the pipe with the red arrow is raised off the ground 5 inches as i have nothing to put under it and when i fell on it it moved down about half an inch and i am worried i have broken something, but dont know how i will be able to tell as the pipe with the red arrow leads to a boxed in horisontal pipe , which bends vertical and then goes out onto the roof, seee picture of vent with red arrow. I know the condensate pipe leads into it but i dunno what elese it discharges and i am really worried my falling onto it and moving it down half an inch has caused damage as it was done by cowbody plumbers. thanks any help appreciated.