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10 Common Design Mistakes and How to Avoid Them

approx 90 minutes - 4 parts - Originally Presented February 2007

CEUs = 0.15   /   CPDs = 1.5   (CEUs/CPDs are OPTIONAL)


As the design of automatic fire sprinkler systems becomes more complex the responsibility of the system designer and the AHJ reviewing those plans increases as well. This virtual seminar discusses 10 errors - either of omisison or misapplication - frequently found on plans. Included in the discussion are sketches and examples of those scenarios, along with references to the applicable sections of the 2002 edition of NFPA-13, Standard for the Installation of Sprinkler Systems. This seminar will give AHJ's and designers a useful explanation of the issues regarding these mistakes.

Upon completion of this program you will be able to:

  • Recognize the effects of sloped ceilings in NFPA 13 for protection of various occupancies
  • Identify the various construction types contained in NFPA 13
    • Unobstructed – five examples
    • Obstructed – seven examples
  • Explain the limitations on sprinkler coverage areas for:
    • Light hazard occupancies
    • Ordinary hazard occupancies
    • Extra hazard occupancies
  • Interpret deflector position requirements for various construction types
  • Identify “boiler plate” notes which are not applicable to the specific project
  • Recognize incompatibility between general notes, plans and calculations
  • Calculate the loss for flow through a meter in an NFPA 13D compliant sprinkler system
  • Solve for the loss in pressure through various valves at various flows
  • Explain the loss or gain in pressure due to elevation
  • Determine if the hydraulics for a “grid” system have been “peaked”
  • Recognize when “canned” details are not accurate in their depiction of installation conditions
  • Demonstrate how the minimum length of the most remote area parallel to the branch lines is established
  • Describe when branch line restraint is required and when it is not

To sample the audio presentation download the following file.

Download Audio for Slides 1 through 12  (mp3)   SAMPLE AUDIO

 


 

NOTE: BECAUSE AUDIO PRESENTATION FILES ARE VERY LARGE, A HIGH-SPEED (BROADBAND) INTERNET CONNECTION IS REQUIRED IF YOU CHOOSE TO DOWNLOAD AND SAVE THESE FILES.

 

 

Ken Wagoner, SET, a 1977 graduate of Bethany College (KS), owns and operates Parsley Consulting, Escondido, California. He holds NICET certifications in Sprinkler System Layout, Fire Alarms, Inspection & Testing, and Special Hazards, and is an NFPA Certified Fire Plan Examiner. He is a member of AFSA, UFCA, NFPA, and the San Diego Fire Protection Assn.