Issue Team Recommendations for Wood CFS 1

Issue Team Recommendations for Wood & CFS 1. Mid-rise light-frame shear wall buildings 2. New soft-story structures 3. New hillside structures 4. New open front structures 5. Light-frame structures with masonry veneer

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

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?

New Soft-story Structures: Reconsider Irregularity Implications

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

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?

New Hillside Structures Design Recommendations

New Hillside Structures Design 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

New Hillside Structures Design Recommendations Resources: • Northridge earthquake experience • City of Los Angeles ordinance • CUREE-Caltech woodframe project

New Open-front Light-frame Structures: Design Recommendations

New Open-front Light-frame Structures: Design Recommendations Issue: • Current code permits construction of potentially hazardous buildings

New Open-front Light-frame Structures: Design Recommendations Resources: • CUREE-Caltech Woodframe Project • Analytical study by Jian Xu – WSU • TS 7 work from 2003 Provisions

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

Issue Team Recommendations for Wood & CFS 1. Mid-rise light-frame shear wall buildings 2. New soft-story structures 3. New hillside structures 4. New open front structures 5. Light-frame structures with masonry veneer