On Friday, July 26, 2019 at 5:50:02 PM UTC-4, wrote:
Dirk,
Those are not,”poor little root ribs”, in fact the designers have reinforced them with several layers of cloth running from the spars deep into the root ribs on both sides of the spar, so that they will transfer the fuselage load into the wings.
JJ

Wing skins also play a meaningful part in handling the loads.
UH