Detailed technical drawing of a spiral staircase

I need a detailed technical drawing of a spiral staircase that I can showcase on my website. Could you let me know in what file formats you deliver (for example, PDF or DWG)? Can you also provide a visualization or render if needed? I’d like the drawing to include precise measurements and angles. Also, could you confirm if you can adapt the drawing to a real-life project later if needed? Lastly, let me know the timeframe and cost.