EERI Seminar on Next Generation Attenuation Models Development of Corresponding Building Code “Design” Maps Nicolas Luco Research Structural Engineer USGS – Golden, CO USGS Workshop on Seismic Hazards of Guam/Northern Mariana Islands & American Samoa

MCE Map (≤‘09 IBC)MCE R Map (’12 IBC) Risk Coefficient Map Deterministic Map Risk-Targeted Map (1%-in-50yrs P.C.) (min) Hazard Map (2%-in-50yrs P.E.) Hazard Curves + scaling to max direction

HAZARD Maps  DESIGN Maps  e.g., 2014 Update of USGS Hazard Maps NEHRP Prov’s ASCE 7 Standard Intl Bldg Code

EERI Seminar on Next Generation Attenuation Models Design Maps Development Schedule Jan 3, ’12: Placeholder 2015 IBC change proposal submitted Jan 11, ‘12: Presented placeholder design maps to BSSC PUC “Development of Corresponding Building Code ‘Design’ Maps,” N. Luco, USGS July 6, 2012 USGS Workshop on Seismic Hazards of Guam/Northern Mariana Islands & American Samoa

EERI Seminar on Next Generation Attenuation Models 9) Design Maps for Guam “Briefing on PUC Design Mapping Task Group,” N. Luco, USGS January 11, 2012 Building Seismic Safety Council (BSSC) Provisions Update Committee (PUC) Meeting ASCE 7-10 S S1S1 S S1S NEHRP? Under Review 300% g 315% g 75% g

EERI Seminar on Next Generation Attenuation Models 9) Design Maps for American Samoa “Briefing on PUC Design Mapping Task Group,” N. Luco, USGS January 11, 2012 Building Seismic Safety Council (BSSC) Provisions Update Committee (PUC) Meeting ASCE NEHRP? S S S1S1 S1S1 Under Review 20% g 75% g 50% g

EERI Seminar on Next Generation Attenuation Models Design Maps Development Schedule Jan 3, ’12: Placeholder 2015 IBC change proposal submitted Jan 11, ‘12: Presented placeholder design maps to BSSC PUC Jan-Apr, ‘12: USGS hazard models completed (& published) May 5, ‘12: Requested disapproval of placeholder IBC proposal May 9, ‘12: Presented finalization plans to BSSC PUC … “Development of Corresponding Building Code ‘Design’ Maps,” N. Luco, USGS July 6, 2012 USGS Workshop on Seismic Hazards of Guam/Northern Mariana Islands & American Samoa

EERI Seminar on Next Generation Attenuation Models Design Maps Development Schedule July, ‘12: Public workshop to finalize consensus hazard models July-Aug, ‘12: Ballot final design maps through BSSC PUC July 31, ‘12: Submit final design maps to IBC as public comment Aug-Sep, ‘12: Public forums in Guam & American Samoa Oct 9-10, ‘12: Resolve BSSC PUC vote/comments Oct 22-28, ‘12: Final Action Hearings for 2015 IBC Nov, ‘12: DOD Unified Facilities Criteria update finalized “Development of Corresponding Building Code ‘Design’ Maps,” N. Luco, USGS July 6, 2012 USGS Workshop on Seismic Hazards of Guam/Northern Mariana Islands & American Samoa

EERI Seminar on Next Generation Attenuation Models Questions for Today Do the (published) USGS hazard models for Guam & American Samoa need to be revised? If so, in what way? If not, what are the explanations for the differences w.r.t. previous estimates (e.g. the 1997 NEHRP Provisions)? “Development of Corresponding Building Code ‘Design’ Maps,” N. Luco, USGS July 6, 2012 USGS Workshop on Seismic Hazards of Guam/Northern Mariana Islands & American Samoa

EERI Seminar on Next Generation Attenuation Models 9) Design Maps for Guam “Briefing on PUC Design Mapping Task Group,” N. Luco, USGS May 9, 2012 Building Seismic Safety Council (BSSC) Provisions Update Committee (PUC) Meeting ASCE 7-10 S S1S1 S S1S NEHRP? 285% g 275% g 70% g

EERI Seminar on Next Generation Attenuation Models 9) Design Maps for American Samoa “Briefing on PUC Design Mapping Task Group,” N. Luco, USGS May 9, 2012 Building Seismic Safety Council (BSSC) Provisions Update Committee (PUC) Meeting ASCE NEHRP? S S S1S1 S1S1 15% g 40% g 30% g