December 12th, 2017
This paper provides and overview of the most-cited moisture sources. The moisture source description includes their rates, incidences, and magnitudes. Within this paper, a moisture source rate is defined as the quantity of moisture per unit of time, i.e., a ten minute shower releases 0.5 liters. Moisture source incidences are defined as the average number of times an event that releases moisture occurs in a day, i.e., a family of four takes three showers/day.A moisture source rate times its incidences equals its magnitude, i.e., a family of four releases 1.5 L/day. The moisture source magnitude comparisons clearly provide a perspective of the relative importance of the most common sources within buildings. The bases of this paper is the Moisture Sources Chapter of theASTM Moisture Control in Buildings MNL 18.