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I ran into a similar layout last year and made a full-size template on plywood right on site - that saved my butt. If you're doing inspections or documenting as you go, having ITP templates set up ahead of time for each step helps keep things smooth and keeps everyone on track. It's way easier to catch issues early that way.
 
As drawn, the risers all radiate from a center point with consistent angles. You could draw it out on the floor and bring the lines up to stringers.

But consistent angles doesn't create a consistent tread depth at the walk line as the walk line is three straight sections, not an arc.

Figure out the walk line first for total run, then tread depth, then lay it out on the ground, then you can take measurements to layout the stringers.
 
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