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Issue Team Recommendations for Wood & CFS Mid-rise light-frame shear wall buildings New soft-story structures New hillside structures New open front structures Light-frame structures with masonry veneer Mid-rise Light-frame Shear Wall Buildings: Performance, Design, Detailing

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Issue Team Recommendationsfor Wood & CFS

Mid-rise light-frame shear wall buildings

New soft-story structures

New hillside structures

New open front structures

Light-frame structures with masonry veneer


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Mid-rise Light-frame Shear Wall Buildings:Performance, Design, Detailing


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Mid-rise Light-frame Shear Wall Buildings:Performance, Design, Detailing

  • Issues:

  • Extended into mid-rise construction without adequate knowledge of seismic performance

  • Is adequate safety provided?

  • How do we design for performance?

  • What tools are needed for multi-story stacked shear wall analysis and design?


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New Soft-story Structures:Reconsider Irregularity Implications


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New Soft-story Structures:Reconsider Irregularity Implications

  • Issues:

  • Analysis and shake table testing consistently shows that light-frame construction exhibits extreme soft story behavior, regardless of design to avoid this behavior

  • Study is needed to consider what is achieved by current code limitations and practical ways to approach new building design


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New Soft-story Structures:Reconsider Irregularity Implications

  • Resources:

  • San Francisco CAPSS/ATC 71-1

  • CUREE-Caltech Woodframe Project

  • NEESWood Project

  • UC Berkeley House Testing

  • Others?


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New Hillside StructuresDesign Recommendations


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New Hillside StructuresDesign Recommendations

  • Issues:

  • In the Northridge Earthquake, collapses occurred in light-frame hillside structures

  • A substantial portion of housing inventory is of hillside construction

  • Current code permits design of hazardous buildings


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New Hillside StructuresDesign Recommendations

  • Resources:

  • Northridge earthquake experience

  • City of Los Angeles ordinance

  • CUREE-Caltech woodframe project



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New Open-front Light-frame Structures:Design Recommendations

  • Issue:

  • Current code permits construction of potentially hazardous buildings


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New Open-front Light-frame Structures:Design Recommendations

  • Resources:

  • CUREE-Caltech Woodframe Project

  • Analytical study by Jian Xu – WSU

  • TS7 work from 2003 Provisions


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New Light-frame Structures with Masonry Veneer: Design Recommendations

  • Issues:

  • Demands on light-frame structure from masonry veneer

  • Anchorage of veneer to structure

  • Resources:

  • NSF/NEES Project


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Issue Team Recommendations Recommendationsfor Wood & CFS

Mid-rise light-frame shear wall buildings

New soft-story structures

New hillside structures

New open front structures

Light-frame structures with masonry veneer


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