Memorizing R Values

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Arjumand Anjum

March 26, 2021 02:55

Hi,

PPD Exam ahead.

Is it beneficial to memorize R values of some insulation materials or are they provided?

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  David Kaplan March 26, 2021 17:57

  NO

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  rebekkak March 26, 2021 20:36 (Edited March 26, 2021 20:40)

  Hi Arjumand.  No, you won't need to memorize R-values.  Just know that you need to add them up to get the R-value of the assembly.  Also, you should know how to convert a U into an R-value. R = 1 ÷ U.

  Hope this helps!

  Rebekka O'Melia, B.Arch, M. Ed, Registered Architect, NCARB,  Step Up ARE Prep

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  Brian Ogle March 26, 2021 20:47

  Know what a K-value is! You should be able to convert K to R to U. 

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  Arjumand Anjum March 26, 2021 22:39

  Thank you very much

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  Mark Baker April 02, 2021 19:15

  Any R Value needed for the exam should be provided in a reference on the exam.

  As others above have mentioned - understand the concepts of what R Value is, How to calculate overall R Value based on U Values, What K Value is, etc.

  Mark, Archizam - ARE 5.0 Practice Exams

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