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Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
Seismic Bracing- Non-Structural Elements
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Seismic Bracing- Non-Structural Elements

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  • 1. Seismic Bracing of Non-Structural Components by Paul W. McMullin, SE, PhD Seismic Bracing of Non-Structural Components November 17, 2008
  • 2. Outline Typical Earthquake Damage Non-Structural Requirements • Structural (Breakout) • Mechanical, Electrical, and • Non-Structural Purpose of Code Plumbing Legal • Partitions, Ceilings, and Earthquake Basics Lights • Cladding and Parapets Seismic Bracing of Non-Structural Elements
  • 3. Seismic Meter Northridge Earthquake Magnitude 6.7 Estimated Economic Loss $49.3 billion PEER (2000) Seismic Bracing of Non-Structural Elements
  • 4. Damage Examples Structural Non-Structural • Cladding • Partitions • Ceiling Systems • Lights • Mechanical Equipment • Piping Seismic Bracing of Non-Structural Elements
  • 5. Structural Damage Example SDEDC (1994) Seismic Bracing of Non-Structural Elements
  • 6. Structural Damage Example FEMA (2000) Seismic Bracing of Non-Structural Elements
  • 7. Structural Damage Example FEMA (2000) Seismic Bracing of Non-Structural Elements
  • 8. Structural Damage Examples Philippines Earthquake D.C. Hopkins (1990) Seismic Bracing of Non-Structural Elements
  • 9. Non-Structural Damage Examples Structural Non-Structural • Cladding • Partitions • Ceiling Systems • Lights • Mechanical Equipment • Piping Northridge Earthquake 1994 (A.B. King) Seismic Bracing of Non-Structural Elements
  • 10. Non-Structural Damage Examples Cladding Mexico City Earthquake 1985 (R.B. Shephard) Mexico City Earthquake 1985 (D.C. Hopkins) Seismic Bracing of Non-Structural Elements
  • 11. Non-Structural Damage Examples Cladding (cont) Seismic Non-Structural Considerations Niel Palmer, PE Seismic Bracing of Non-Structural Elements
  • 12. Non-Structural Damage Examples Partitions Seismic Non-Structural Considerations Niel Palmer, PE Seismic Bracing of Non-Structural Elements
  • 13. Non-Structural Damage Examples Ceiling Systems Mexico City Earthquake Seismic Non-Structural Considerations Niel Palmer, PE 1985 (D.C. Hopkins) Seismic Bracing of Non-Structural Elements
  • 14. Non-Structural Damage Examples Lights 1965 Seattle-Tacoma Earthquake Photo by Del Ogden Daily Olympian Seismic Non-Structural Considerations Niel Palmer, PE Seismic Bracing of Non-Structural Elements
  • 15. Damage Examples Mechanical Equipment Non-Structural Elements Timothy P. McCormick Seismic Bracing of Non-Structural Elements
  • 16. Damage Examples Piping Seismic Non-Structural Considerations Niel Palmer, PE Seismic Bracing of Non-Structural Elements
  • 17. Non-Structural Damage Examples Racking 1949 Olympia earthquake Photo from Seattle Times Co. Seismic Non-Structural Considerations Niel Palmer, PE Seismic Bracing of Non-Structural Elements
  • 18. What is the Point? Why can’t I keep doing this the way I used to? We learn new things after every earthquake Sometimes, old way was not code compliant or enforced Seismic Bracing of Non-Structural Elements
  • 19. Code Purpose The purpose of this code is to establish the minimum requirements to safeguard the public health, safety and general welfare… (IBC 2006, 101.3) Seismic Bracing of Non-Structural Elements
  • 20. Code Purpose Seismic Bracing of Non-Structural Elements
  • 21. Legal Progression: How Did We Get Here? State Law • State statute requires use of building code to govern construction in new and existing buildings. (Utah Admin. Code 58-56, R156-56) • State law requires IBC 2006 IBC 2006 • 1613.1 Scope: Every structure, and portion thereof, including nonstructural components that are permanently attached to structures and their supports and attachments, shall be designed and constructed to resist the effects of earthquake motions in accordance with ASCE 7… ASCE 7-05 • Provides guidance on determining seismic force used to design bracing. Couple this with material specific codes and requirements Seismic Bracing of Non-Structural Elements
  • 22. Earthquake Basics Forces (F=ma) For earthquakes, although everything in the building may be hit with the same acceleration, the mass (weight) of the object determines the force exerted. Seismic Bracing of Non-Structural Elements
  • 23. Earthquake Code Basics Seismic Design Category • Occupancy Category • Seismic Accelerations • Provided by Structural Engineer of Record Seismic Bracing of Non-Structural Elements
  • 24. Earthquake Code Basics Occupancy Categories • Cat I: Low Hazard: Agricultural, temporary, minor storage facilities • Cat II: Typical Buildings • Cat III: Substantial Hazard: Schools, jails, power generation, water treatment, telecom • Cat IV: Essential Facilities: Hospitals, fire, police, designated shelters, aviation control towers, national defense Seismic Bracing of Non-Structural Elements
  • 25. Earthquake Code Basics Importance Factor • Ip=1.5 if any of the following exist Component is required to function for life-safety purposes after an earthquake, including fire protection sprinkler systems The component contains hazardous materials The component is in or attached to an Occupancy Category IV structure and it is needed for continued operation of the facility of its failure could impair the continued operation of the facility. • Otherwise, Ip=1.0 Seismic Bracing of Non-Structural Elements
  • 26. Earthquake Code Basics Seismic Bracing of Non-Structural Elements
  • 27. Building Element Bracing Breakout Groups Task • Mechanical, Electrical, and • Review Handout Plumbing • Answer Questions • Partitions, Ceilings, and • Present What Learned Lights • Cladding and Parapets Summarize Seismic Bracing of Non-Structural Elements
  • 28. Responsibility Responsibility for Design Defined for each project Seismic Bracing of Non-Structural Elements
  • 29. Responsibility (cont.) Seismic Bracing of Non-Structural Elements
  • 30. Responsibility (cont.) Seismic Bracing of Non-Structural Elements
  • 31. How Do I Brace Things Load Path Provide a way for forces to get back into structure Seismic Bracing of Non-Structural Elements
  • 32. How Do I Brace Things Seismic Bracing of Non-Structural Elements
  • 33. Resources FEMA 389- Communicating with Owners and Unistrut Seismic Bracing Manual Managers of New Buildings on Earthquake Risk: (http://www.unistrut.com/literature/index.php?doc A Primer for Design Professionals =Seismic_App&pg=1) (http://www.fema.gov/plan/prevent/ms/rmsp389) B-Line Seismic Restraints (http://www.b- FEMA 412- Installing Seismic Restraints for line.com/product/Seismic/index.asp) Mechanical Equipment (http://www.fema.gov/library/viewRecord.do?id=1 557) FEMA 413- Installing Seismic Restraints for Electrical Equipment (http://www.fema.gov/library/viewRecord.do?id=1 436) FEMA 414- Installing Seismic Restraints for Duct and Pipe (http://www.fema.gov/library/viewRecord.do?id=1 437) Seismic Considerations for Steel Storage Racks Located in Areas Accessible to the Public (http://www.fema.gov/library/viewRecord.do?id=1 439) Seismic Bracing of Non-Structural Elements
  • 34. Seismic Bracing of Non-Structural Components by Paul W. McMullin, SE, PhD Seismic Bracing of Non-Structural Components November 17, 2008

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