I couldn't tell what that 1.8 was for. It appeared as if it was some circular area off the map and there were no indications on what it was for and since you stated you wanted the red line, I went with that. For 1.8 quants, of which is rather a little odd (1.75 is the nearest worthy, easy-to-work-with value). Either way, I can make it look very smooth and fine. Given the new specifications and details, I could make a higher quality replica of it within maybe 20 minutes using nothing more than MED. The 1.8 value is rather screwy, but if you want it, I'll need to use the 6.4 MED to do so. Since this is apparently an elevator cable, it's rendered vertically using the side or back views rather than the top view, of which, too, is not a problem.

Edit: Also, the 21 on the map is inconsistant with the spacing of everything else and looks more like a 32 than a 21 so I made the model as if it was a 32 to keep the shape as displayed on your diagram.