PCI/NSF/CPF PART 4: 1 of 18 NEES/EERI Webinar April 23 2012 Outline Introduce PCI/NSF/CPF DSDM Research Effort Review Key Behaviors of Precast Diaphragms.

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Presentation transcript:

PCI/NSF/CPF PART 4: 1 of 18 NEES/EERI Webinar April Outline Introduce PCI/NSF/CPF DSDM Research Effort Review Key Behaviors of Precast Diaphragms and Design Philosophy Adopted Summarize DSDM Research Project Findings Present Precast Diaphragm Design Procedure Cover Precast Diaphragm Design Example Discuss Codification Efforts

PCI/NSF/CPF PART 4: 2 of 18 NEES/EERI Webinar April IBC 2009 NEHRP Provisions ASCE 7-10 Including Supplement No.1 Entry into the IBC ACI

PCI/NSF/CPF PART 4: 3 of 18 NEES/EERI Webinar April NEHRP Provisions

PCI/NSF/CPF PART 4: 4 of 18 NEES/EERI Webinar April NEHRP RECOMMENDED SEISMIC PROVISIONS FOR NEW BUILDINGS AND OTHER STRUCTURES Part 1: Provisions Part 2: Commentary to ASCE/SEI 7-05 Part 3: Resource Papers (RP) on Special Topics in Seismic Design 2009 NEHRP Provisions

PCI/NSF/CPF PART 4: 5 of 18 NEES/EERI Webinar April NEHRP Provisions Part 3 Resource Paper 10

PCI/NSF/CPF PART 4: 6 of 18 NEES/EERI Webinar April IBC 2014 NEHRP Provisions ASCE 7-16 Entry into the IBC ACI ?

PCI/NSF/CPF PART 4: 7 of 18 NEES/EERI Webinar April BSSC PUC Issue Team (IT) 6 on Diaphragm Issues

PCI/NSF/CPF PART 4: 8 of 18 NEES/EERI Webinar April Scope Reexamine and refine seismic design provisions for cast-in-place concrete, precast concrete (with or without topping), metal, and wood diaphragms, focusing on objectives with regards to performance in the design earthquake.

PCI/NSF/CPF PART 4: 9 of 18 NEES/EERI Webinar April Global (ASCE 7) Issues

PCI/NSF/CPF PART 4: 10 of 18 NEES/EERI Webinar April Metal Diaphragms including Composite and Noncomposite Concrete-Filled Metal Decks – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

PCI/NSF/CPF PART 4: 11 of 18 NEES/EERI Webinar April NIST Technical Brief No. 5

PCI/NSF/CPF PART 4: 12 of 18 NEES/EERI Webinar April Wood Diaphragms – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

PCI/NSF/CPF PART 4: 13 of 18 NEES/EERI Webinar April NIST TechBrief Series 2012: Seismic Design of Steel Special Braced Frame Systems and Structural Wood Diaphragm Systems

PCI/NSF/CPF PART 4: 14 of 18 NEES/EERI Webinar April Cast-in-Place Concrete Diaphragms – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

PCI/NSF/CPF PART 4: 15 of 18 NEES/EERI Webinar April NIST Technical Brief No. 3

PCI/NSF/CPF PART 4: 16 of 18 NEES/EERI Webinar April Precast Concrete Diaphragms (Topped and Untopped) – Current Practice, Performance in Past Earthquakes, Areas of Needed Improvement

PCI/NSF/CPF PART 4: 17 of 18 NEES/EERI Webinar April Schedule The IT was authorized in March A Resource Paper by the IT will be completed in 24 months from then, by the end of February 2013.

PCI/NSF/CPF PART 4: 18 of 18 NEES/EERI Webinar April Questions? Ned Cleland: Robert Fleischman S.K. Ghosh