Space Frame Issue

Hello, I been working on this project for about a month now. I have a surface which is triangulated. I have been able to create apertures and what not, now im looking to structure it. While i can get the initial frame or curves for structure, im trying to get  a space frame going. I can get the Outer Edges and the Tringle that forms the bottom of space frame. I just cant seem to connect the endpoints.

Sublist is a little beyond me, i looked at forums and someone recommended using List item then Interpolate, but that gives weird curvy connection.

Thank you for your help