3 ms·

Would metal stairwells be too costly? Seems to me like it might be an easier construction job (especially with some standardized heights)

• pjc50 2y ago
  It's much easier to pour concrete than do all that welding, and steel is not as fire resistant as you might expect.
  • rtpg 2y ago
    I was just thinking of bolts. I mean we're talking about the staircase right, not the part of the building that actually holds up the entire structure. But I might be vastly overestimating this. My previous appartment was in a 3-story building, and my impression was that the entire staircase was bolted together (and it was on the outside of the building).
    • dredmorbius 2y ago
      It's less that stairwells need to support the structure than that stairwells need to survive the destruction of the structure, something concrete does remarkably well. Not turning into an oven is another feature. Heat conductivity of concrete is far lower than that of steel.