Published: Jan 2009
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THIS CHAPTER DESCRIBES MEASUREMENT TECHniques and instrumentation for the measurement of moisture in the air (relative humidity), moisture in building materials, water-vapor transmission, water leakage, and building airflow. The chapter does not discuss the extensive literature regarding temperature measurement (an important component in understanding the dynamics of vapor formation and transport in buildings). To do so would only duplicate information contained elsewhere and easily obtained by the practicing engineer. For instance, Ref.  contains an excellent overview of the various electronic temperature measurement systems and provides detailed references for further study. The importance that the engineering community attaches to moisture and humidity is attested to by the fact that the ASTM Index of Standards  contains in excess of 150 entries under the categories of “moisture analysis” and “relative humidity.” If one adds the three additional topics mentioned in the first paragraph, the number easily exceeds 200. In order to simplify the task of finding ASTM standards relevant to building investigations, Table 1 is provided. It lists, by designation and title, standards that either are, or potentially could be, useful to the practitioner in attempting to undertake moisture or moisture-related investigations within the building environment. This table is by no means exhaustive and is meant as a guide. Additional moisture-related standards have been promulgated by ASHRAE, ANSI, and other standards writing or professional organizations.
Principal, Simpson Gumpertz & Heger Inc., Waltham, MA
Lagus, Peter L.
Lagus Applied Technology, Inc., Escandido, CA