Hello!
I have a drawing of a building from the 1950s that is built in the late functionalism style. The drawing indicates the materials used, but it is full of abbreviations that are difficult to decipher if you are not familiar with the material technical terms from the 50s.
One of the abbreviations I'm wondering about is "SP-panel"/"SP-plank". I have found results for both spårpanel and spontpanel, it is a material used for ceilings and a partition (but not load-bearing as far as I believe) wall. I would be eternally grateful for help to clarify this!
