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TOLMAN HALL RETROFIT POSSIBILITIES

TOLMAN HALL RETROFIT POSSIBILITIES. Typical Problem Substructure. TYPICAL STRUCTURAL DETAIL – THE PROBLEMS?. Floor Diaphragm . Edge Beam. Link Beam Continuous Under Floor. External Column. EXTERNAL SOLUTION. USE A LARGE NUMBER OF IDENTICAL PRECAST CONRETE ELEMENTS

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TOLMAN HALL RETROFIT POSSIBILITIES

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  1. TOLMAN HALL RETROFIT POSSIBILITIES Typical Problem Substructure

  2. TYPICAL STRUCTURAL DETAIL – THE PROBLEMS? Floor Diaphragm Edge Beam Link Beam Continuous Under Floor External Column

  3. EXTERNAL SOLUTION USE A LARGE NUMBER OF IDENTICAL PRECAST CONRETE ELEMENTS CONNECT ELEMENT TOGETHER WITH POST TENSION CABLES ADD ADDITIONAL REINFORCEMENT AND CONCRETE TO ADD STIFFNESS THE SYSTEM MUST CONTAIN THE EXISTING BUILDING FROM COLLAPE VERTICAL COLLAPE WILL NOT BE POSSIBLE IF LATERAL DISPLACEMENT ARE SMALL.

  4. Possible Precast Substructures Vertical View Floor Diaphragm Link Beam Vertical Cables To Foundation External Column Attach Element to Structure Add Horizontal and Vertical Elements to Form Grid Use Precast Element as RC Form

  5. Constant Width Buttress Containment Frame Using Post Tension Cables? Floor Level Column ELEVATION VIEWS

  6. We Can Calculate P-Delta Lateral Forces To Prevent Vertical Collapse Weight of building above floor n-1 . Negative geometric stiffness

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