Create a surface from three arches

[WoonSoon]

ThreeArches.3dm (42.2 KB)

Hi, I would like to create a joined surface from the three arches that follows the curvature of the hatched area.
Any ideas? Thank you

[pascal (Pascal Golay)]

Hello - I’d use a construction some thing like this, if I understand you -

Note the top will be flat and tangent to the curved parts, not curvature continuous.

-Pascal

[WoonSoon]

Hi, thanks exactly what I am looking for.
What command did you use?

Kindly regards