Help to model Precast concrete panel in SketchUp

Hi All
I have one project, and I want model precast panel it in SketchUp. After finish model I want send model to Tekla to model rebar. Please see my drawing include:

  • Typical structure plan: MEGA
  • Detail panel : MEGA
  • sample drawing for panel: MEGA
    Thanks All

You will get more answers if you show an image or an SketchUp model here directly instead of external links to dwg files…