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Preliminary Design

Preliminary Design. Ron Klemencic, P.E., S.E. President, Magnusson Klemencic Associates Presented by: John Hooper, P.E., S.E. Director of Earthquake Engineering, Magnusson Klemencic Associates. Structural Configuration. Simple arrangement of structural elements Clearly defined load paths

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Preliminary Design

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  1. Preliminary Design Ron Klemencic, P.E., S.E. President, Magnusson Klemencic Associates Presented by: John Hooper, P.E., S.E. Director of Earthquake Engineering, Magnusson Klemencic Associates

  2. Structural Configuration • Simple arrangement of structural elements • Clearly defined load paths • Complicated configurations and geometries complicate behavior—avoid to the extent possible

  3. System Configuration Changes in Building Stiffness and Mass

  4. System Configuration Repositioning of Bracing Elements

  5. System Configuration Multiple Towers on a Common Base

  6. System Configuration Column Transfers and Offsets

  7. System Configuration Gravity Induced Shear Forces

  8. System Configuration Limited Connectivity of Floor Diaphragms

  9. System Configuration Concentration of Diaphragm Demands

  10. Structural Performance Hierarchy • Identify zone or elements of nonlinear response • Establish hierarchy of the nonlinear elements • Incorporate capacity design concepts as appropriate for remaining elements • Confirm hierarchy through nonlinear response history analysis

  11. Wind WIDTH?

  12. Wind WIDTH?

  13. Higher Mode Effects Significantly Impact Shear and Flexural Demands

  14. Higher Mode Effects

  15. Outrigger Elements Column Demands Due to Outrigger Over Strength

  16. Design Base Shear

  17. Serviceability Base Shears

  18. Drift One Rincon Hill Tower Core NLTHALCI (High Gravity) Interstory Drift[Y-Direction, NW corner]

  19. Flexural Demands

  20. Core Shear

  21. Coupling Beam Rotations

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