Dreidecker is the german word for triplane. This plane was extremely maneuverable and agile in the air. Richthofen called it 'machine gubs on wings'. A feared adversary in the 'air to air' combat
in the first World War.
It was introduced in July 1917 and in early 1918 it was already 'obsolete' compared to more powerfull and agile aircraft like the Fokker D VII.
Once the ribs are on the spar, . . .
...a plywood sheet covers the front of the wing.
Once the wing is finished, it is stored under the garage ceiling to make place for the completion of the other wings.
The wings are completed and rigged to the fuselage