L-Shaped Pergola Rafter Plan

I need a clear set of dimensioned drawings that show exactly how the roof rafters should be cut and laid out for an L-shaped wooden pergola. One leg of the “L” is 2.5 m; the other is 4.2 m. I’ll be using pressure-treated lumber and I want an open rafter-tail look, so the plan has to show the tails as a visible design feature rather than enclosing them with sheathing.

Rainwater needs to run off toward the gutter line with a medium slope—keep the finished roof pitch in the 4-to-6-degree range. I don’t require full structural calculations; what I need is a working drawing that shows:

• Exact rafter lengths and end-cut angles for both legs of the pergola
• The intersection detail where the two legs meet so the slope remains continuous
• Ridge or header placement, if needed, to maintain the specified pitch
• Clear annotation of all critical dimensions in metric units

A clean PDF is fine for printing, but I’d also like the source file (DWG, DXF, or SketchUp) so I can tweak it later if necessary.