Boeing B787 Fuselage Assembly

[mmciau]

May I ask please?
What would be the amount of "overlap" that the joins be on the various sections at assembly of a B787 fuselage?

[no-hoper]

Check the last 3 pictures.

787 - Problems Joining Fuselage Sections - Fuselage Gaps at Flightstory.net - Aviation Blog

[EEngr]

last 3 pictures

If that is a lap joint, the pictures don't make the eventual overlap clear. It could be about 3 inches, but those temporary composite 'tools' would be in the way unless they are removed before the join.

The first two photos show the lap section more clearly. But no one is holding a ruler in those photos. And they are taken at an angle so as to make it difficult to distinguish the distance along the fuselage axis (which will be pushed together) from the error in diameters.