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Configuration Issues from the 23 October 2011, Van- Ercis , Turkey, M w =7.1 (USGS) eq

Configuration Issues from the 23 October 2011, Van- Ercis , Turkey, M w =7.1 (USGS) eq. Soft ground story Split-level ground story Floor torsion Strong-beam weak-column Very flexible floor system: block infilled joist floor with very weak/flexible beams Captive columns Pounding.

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Configuration Issues from the 23 October 2011, Van- Ercis , Turkey, M w =7.1 (USGS) eq

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  1. Configuration Issuesfrom the 23 October 2011, Van-Ercis, Turkey, Mw=7.1 (USGS) eq • Soft ground story • Split-level ground story • Floor torsion • Strong-beam weak-column • Very flexible floor system: block infilled joist floor with very weak/flexible beams • Captive columns • Pounding

  2. Soft Story @ Ground Level

  3. Split-level Ground Story

  4. Split-level Ground Story Elevator core RC wall seen from inside

  5. Floor Torsion Column built as a Structural Wall Structural Wall in the back

  6. Floor Torsion All columns at ground level and along the front and side of the building (away from the center of resistance) developed hinges at their bases.

  7. Floor Torsion

  8. Floor Torsion Structural Wall in the back (no damage) Column built as a Structural Wall

  9. Floor Torsion

  10. Floor Torsion

  11. Strong-Beam Weak-Column

  12. Very Flexible Floor System Column hinging at the base

  13. Captive Columns

  14. Captive Columns

  15. Captive Columns

  16. Captive Columns (formed dynamically)

  17. Captive Columns (formed dynamically)

  18. Pounding

  19. Bayram Hotel in Van (main city)(collapsed during the M5.6 eq on 11/9/2011) Photo taken on Nov. 1, 2011

  20. Bayram Hotel Photo taken on Nov. 10, 2011 source: milliyet.com.tr

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