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--- planning:airtight_construction:airtightness_measurements_in_passive_houses [2021/07/30 10:12] – speper
+++ planning:airtight_construction:airtightness_measurements_in_passive_houses [2021/08/24 11:11] – nsukhija
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 ====== Airtightness measurements in Passive Houses ======
 ===== Instructions for carrying out measurements =====
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 Airtightness measurements in Passive House buildings are to be carried out uniformly worldwide according to ISO 9972, method 1. The deviations (these are not of a fundamental nature), clarifications and additions to the standard in relation to Passive Houses are described here. \\
 The calculation of the reference volume for passive houses is to be carried out according to the procedure listed below which is not part of the ISO 9972. The resulting volume is to be used for the determination of the n<sub>50</sub>-value. \\
-For the calculation and documentation, it can be helpful to use the "room data sheets", which is included as an additional tool in PHPP Version 10.  \\
+For the calculation and documentation, it can be helpful to use the "room data", which is included as an additional tool in PHPP Version 10.  \\
 ==== 1. Comparison of designations ====
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 The superseded standards EN 13829 and the current ISO 9972 use different designations in some places. For a better overview, the most important ones are compared here:
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+[{{ :picopen:000_bd_norm_bezeichnungen.jpg?400 |}}]
 ==== 2. Calculation of volumes ====
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 |The only exceptions may be temporarily taping over openings for missing building components, as described above, which affect the airtightness (e.g. missing door sill, missing odour trap in the waste water pipe). Again, an exact record should be kept about such sealing.|**Exception: Missing building components**|
 |**The aim is to obtain realistic results reflecting the building’s airtightness in use, rather than to create an "artificially" improved situation.**|**Building as used**|
-|**Negative AND excess pressure measurement**\\ Unlike in the EN 13829 and ISO 9972 standards, both negative pressure AND excess pressure are generally required when measuring the airtightness in Passive Houses. In this way, the reliability of the measurement results is significantly improved, with a minimum of extra effort. Finally, the airtightness parameter of the building is determined as an average value from the negative and excess pressure results.|**Measurement with negative __and__ excess pressure**|
+|**Negative AND excess pressure measurement**\\ Unlike in the ISO 9972 standards, both negative pressure AND excess pressure are generally required when measuring the airtightness in Passive Houses. In this way, the reliability of the measurement results is significantly improved, with a minimum of extra effort. Finally, the airtightness parameter of the building is determined as an average value from the negative and excess pressure results.|**Measurement with negative __and__ excess pressure**|
 ==== 5. Special features of large buildings (qE50-value) ====