Arraying members across a paraboloid

I’m looking to array the joist members (light blue) along a paraboloid (green roof), and I have very little experience with grasshopper so I’m not entirely sure what I’m doing if more explanation is needed id be happy to provide

screenshots are for sure helpful to describe what you want to get, but only by attaching a Rhino / GH file you will get hands-on help :slight_smile:

you can upload a file by dragging it directly on the place where you type :+1:

if you are going to upload only a GH file, please internalize any referenced geometry

RhinoHelp.3dm (375.0 KB)
I hope that helps

This can be done like this: (20.1 KB)