Orthographic Curved Section

I need some help with creating a section drawing of this plan. Currently my plan is based around a central catenary curve shape, and has a catenary curve cut line (pink). The teal lines represent what following this curve along the cut through objects would look like, but this isn’t making sense to me. I originally started by projecting the cut through lines at a 90 degree angle upwards, and it gave me a section but it’s really hard to read so my professor asked me to do this method. I am just struggling to understand how this section would work. For context, the black line is the ground line for the section and the teal lines touching it are the projections of the curve where there is a cut line. Any help would be appreciated.

Hi Kylie -
It’s not clear to me what you are trying to do and where things go wrong.
Please post your 3dm file and more details about what makes the section hard to read.