The image is over sized and may not be displaying fully. There two images on the top of collage. The first is a closeup of the pipe that would be the curved pipe from below. The ~2 in pipe is centered about 10 from the South wall. Just above and touching the pipe appears to be chipped cement or other material slightly mounded over the pipes and is chipped to form that irregular shape. The photo on top right would be the straight pipe from below. The bottom photo is rotated 90 degrees and shows the measures from the East wall.
I get roughly for the
straight pipe center 36 from East wall
straight pipe center 11.5 from South wall
bent pipe center 27.5 from East wall
bent pipe center 10 from South wall
Here is a full resolution view of the bent pipe and chip. Top edge is South. I don't think that chip contains a pipe edge, but I did not think at the time to check it closer.
For the SN pic many may be suitable for 3D anaglyphs. If you don't have a pair of cyan/red 3D glasses you might find some on Amazon pretty cheap. I wear glasses and found a pair of cyan/red clip-ons that work really well for me.