1. 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 and Design Philosophy Adopted Summarize DSDM Research Project Findings Present Precast Diaphragm Design Procedure Cover Precast Diaphragm Design Example Discuss Codification Efforts

2. PCI/NSF/CPF PART 4: 2 of 18 NEES/EERI Webinar April 23 2012 2012 IBC 2009 NEHRP Provisions ASCE 7-10 Including Supplement No.1 Entry into the IBC ACI 318-11

3. PCI/NSF/CPF PART 4: 3 of 18 NEES/EERI Webinar April 23 2012 2009 NEHRP Provisions

4. PCI/NSF/CPF PART 4: 4 of 18 NEES/EERI Webinar April 23 2012 2009 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

5. PCI/NSF/CPF PART 4: 5 of 18 NEES/EERI Webinar April 23 2012 2009 NEHRP Provisions Part 3 Resource Paper 10

6. PCI/NSF/CPF PART 4: 6 of 18 NEES/EERI Webinar April 23 2012 2018 IBC 2014 NEHRP Provisions ASCE 7-16 Entry into the IBC ACI 318-17 ?

7. PCI/NSF/CPF PART 4: 7 of 18 NEES/EERI Webinar April 23 2012 BSSC PUC Issue Team (IT) 6 on Diaphragm Issues

8. PCI/NSF/CPF PART 4: 8 of 18 NEES/EERI Webinar April 23 2012 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.

9. PCI/NSF/CPF PART 4: 9 of 18 NEES/EERI Webinar April 23 2012 Global (ASCE 7) Issues

10. PCI/NSF/CPF PART 4: 10 of 18 NEES/EERI Webinar April 23 2012 Metal Diaphragms including Composite and Noncomposite Concrete-Filled Metal Decks – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

11. PCI/NSF/CPF PART 4: 11 of 18 NEES/EERI Webinar April 23 2012 NIST Technical Brief No. 5

12. PCI/NSF/CPF PART 4: 12 of 18 NEES/EERI Webinar April 23 2012 Wood Diaphragms – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

13. PCI/NSF/CPF PART 4: 13 of 18 NEES/EERI Webinar April 23 2012 NIST TechBrief Series 2012: Seismic Design of Steel Special Braced Frame Systems and Structural Wood Diaphragm Systems

14. PCI/NSF/CPF PART 4: 14 of 18 NEES/EERI Webinar April 23 2012 Cast-in-Place Concrete Diaphragms – Current Practice, Performance in Past Earthquakes, Areas of Potential Improvement

15. PCI/NSF/CPF PART 4: 15 of 18 NEES/EERI Webinar April 23 2012 NIST Technical Brief No. 3

16. PCI/NSF/CPF PART 4: 16 of 18 NEES/EERI Webinar April 23 2012 Precast Concrete Diaphragms (Topped and Untopped) – Current Practice, Performance in Past Earthquakes, Areas of Needed Improvement

17. PCI/NSF/CPF PART 4: 17 of 18 NEES/EERI Webinar April 23 2012 Schedule The IT was authorized in March 2011. A Resource Paper by the IT will be completed in 24 months from then, by the end of February 2013.

18. PCI/NSF/CPF PART 4: 18 of 18 NEES/EERI Webinar April 23 2012 Questions? Ned Cleland: drned@brd-inc.com Robert Fleischman rfleisch@email.arizona.edu S.K. Ghosh skghoshinc@gmail.com