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The Dom of Cologne (Köln) was finished in the 19th century, and the roof supports (not visible from inside or outside of the church) are actually made of steel.

by gpvos 8y ago

The Dom of Cologne (Köln) was finished in the 19th century, and the roof supports (not visible from inside or outside of the church) are actually made of steel. It's amazing to see this relatively modern technology in the "attic" of the church.

flukus 8y ago
> It's amazing to see this relatively modern technology in the "attic" of the church. We've been making steel in some form since at least antiquity and possible a couple of thousand years longer.
- gpvos 8y ago
  Okay, so why weren't steel beams used for the Notre Dame, for example?
  - flukus 8y ago
    Because it was expensive and mostly used for knives and swords that required affordable amounts and didn't have better options.
    - gpvos 8y ago
      Okay, so more of an economical issue than technological. Good to know, thanks.