Rules of thumb for Total Shortening

Steel Columns

  • Only Elastic Shortening about 1.5 to 2mm/floor

Concrete Columns

  • Elastic Shortening about 0.5 to 0.8mm/ floor
  • Creep about 1 to 2 x Elastic Shortening
  • Shrinkage about 0.2 to 0.5 mm/ floor
  • Overall very similar but happening at different times.

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