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NFPA 72 Mass Notification Regulations

NFPA 72 Mass Notification Regulations. November 10, 2011.

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NFPA 72 Mass Notification Regulations

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  1. NFPA 72 Mass Notification Regulations November 10, 2011
  2. Acentech Incorporated is a Registered Provider with The American Institute of Architects Continuing Education Systems. Credit earned on completion of this program will be reported to CES Records for AIA members. Certificates of Completion for non-AIA members are available on request.This program is registered with the AIA/CES for continuing professional education. As such, it does not include content that may be deemed or construed to be an approval or endorsement by the AIA of any material of construction or any method or manner of handling, using, distributing, or dealing in any material or product. Questions related to specific materials, methods, and services will be addressed at the conclusion of this presentation. November 10, 2011
  3. NFPA
  4. Background
  5. NFPA 72, 2007 Mass Notification Systems Provide “real-time information and instructions to people in a building, area, site, or installation using intelligible voice communications along with visible signals, text, and graphics, and possibly including tactile or other communication methods” DoD UFC 4-021-01
  6. NFPA 72, 2010 Approved by ANSI in 2009 Chapter 24 Emergency Communications Systems (ECS) ECS = EVACS + MNS
  7. NFPA 72, 2010 Chapter 24 establishes “Minimum required levels of performance, reliability, and quality of installation for ECS but does not establish the only methods by which these requirements are to be achieved.” Ex: Controls, Ancillary Functions, Pathway Survivability, and… Voice Evacuation Messages: Sound System Requirements
  8. NFPA 72, 2010 “Emergency communications systems shall be capable of the reproduction of prerecorded, synthesized, or live messages with voice intelligibility” Intelligible Voice Messages
  9. Speech Intelligibility Intelligible Voice Messages “Intelligible” Metrics: Common Intelligibility Scale (CIS) Speech Transmission Index (STI) Speech Transmission Index for Public Address (STI-PA) RApid Speech Transmission Index (RASTI) Articulation Index (AI) AlCons (Percent Articulation of Consonants)
  10. Speech Intelligibility Speech Transmission Index & Common Intelligibility Scale Commonly used metrics 0.50 STI = 0.70 CIS Example: STI
  11. Speech Intelligibility Example: STI “The intelligibility of an emergency communication system is considered acceptable if at least 90 percent of the measurement locations within each ADS (acoustically distinguishable space) have a measured STI of not less than 0.45 (0.65 CIS) and an average STI of not less than 0.50 STI (0.70 CIS).” -NFPA 2010 Annex D
  12. Acoustically Distinguishable Spaces Acoustically Distinguishable Spaces “distinguished from other spaces due to acoustical, environmental or use characteristics, such as reverberation time and ambient sound pressure level”
  13. Acoustically Distinguishable Spaces MIT Sloan School of Management, Bruner/Cott Architects and Planners
  14. Acoustically Distinguishable Spaces Logan Airport, Terminal A, HOK
  15. Acoustically Distinguishable Spaces Phillips Academy, Paresky Commons, Schwartz/Silver Architects
  16. 3-Legged Approach
  17. Room Acoustics
  18. Room Acoustics
  19. Room Acoustics
  20. Room Acoustics
  21. HVAC Noise Control
  22. HVAC Noise Control
  23. HVAC Noise Control
  24. HVAC Noise Control
  25. Sound Systems Loudspeakers Miami International Airport: Terminal H Improvements, Rodriguez and Quiroga Architects; South Terminal Expansion, Borrelli + Partners
  26. Sound Systems
  27. Sound Systems
  28. Sound Systems
  29. Sound Systems Understanding the Tools
  30. Sound Systems Loudspeakers Specifications Types Horns Full-range “Box” Enclosures
  31. Sound Systems Types (cont.) Steerable Column Loudspeakers Line Arrays
  32. Sound Systems Mixers Digital Signal Processing (DSP) Amplifiers
  33. Sound Systems
  34. Speech Intelligibility Prediction Speech Intelligibility Prediction
  35. Speech Intelligibility Prediction 3D Computer Modeling
  36. Speech Intelligibility Prediction 3D Computer Modeling
  37. Speech Intelligibility Prediction 3D Computer Applications EASE Bose Modeler CATT-Acoustic Odeon
  38. Speech Intelligibility Prediction Results/Calculated metrics: Direct SPL STI (Speech Transmission Index) Total SPL D/R Ratio RASTI Privacy Index Loudspeaker Overlap
  39. Speech Intelligibility Prediction Case Study: Rodriguez and Quiroga Architects, Homestead City Hall (unbuilt)
  40. Speech Intelligibility Prediction
  41. Speech Intelligibility Prediction
  42. Speech Intelligibility Prediction Identifying Potential Problem Areas
  43. Speech Intelligibility Prediction Creating Solutions
  44. Speech Intelligibility Prediction
  45. Intelligibility Measurement Speech Intelligibility Measurement
  46. Intelligibility Measurement Plymouth State Ice Arena, Sasaki Associates
  47. Questions?Thank you for your time. November 10, 2011
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