Western European and British Isles Iron Age Gaelic (Celtic) culture, 800 B.C.E. to 100 C.E.
Materials: wood columns and beams, roof purlins; thatch roof.
Data for CG model:
1. http://brewminate.com/history-of-the-longhouse/
2. http://structuralarchaeology.blogspot.com/2009/08/33-elsloo-32-neolithic-longhouse- made.html