Go to Forum Home PHPP, SAP & Software reference volume for blower door test

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    • #31246
      Nick Grant
      Participant

      I am still confused about this.

      For PH certification how is the internal volume calculated? subtract first floor volume? Internal walls etc as well?

      Came up discussing Bills result for DD.

      Cheers

      Nick

    • #36831
      Alan Clarke
      Participant

      Nick
      you mean the volume associated with the ach@50Pa figure? It is the volume the tester used to derive the quoted ach from the m3/hr actually measured during the test – so that the identical m3/hr figure can be used in PHPP.

      The volume to use is defined in the airtest standard, not by PHPP, and as far as I know it is simply the gross volume enclosed by the air barrier.

      Alan

    • #36832
      Nick Grant
      Participant

      I'll email you Alan.

    • #36833
      Mark Siddall
      Participant

      For pressure test volume WF has confirmed that it is the volume is the total internal volume less floors, staircase and partitions (relates to EN std). Often this can be: (TFA*floor to cieling height)+void from the staircase.

      Mark

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