Chimneys and partitions
Until central heating became commonplace, chimneys were an integral part of the building’s structure and were usually placed at wall junctions.
In storey partitions of joist work, beams are trimmed as shown in the figure, and the chimney wall is incorporated into the supported non-load-bearing interior wall.
The timbers in the storey partitions (as well as any board partitions) are kept at a distance of one brick away from the inside of the chimney wall, as a fire precaution.
Recommended literature in Danish:
Kaare Kristensen: Murarbejde (1917)
Kaare Kristensen: Tømrerarbejde (1920)
Danskbyggeskik.dk: Bygningsdel/Indervægge og Bygningsdel/Etageadskillelse/Træbjælkelag