Abstract
The temperature and the relative humidity at the inner part of wall panels are very important factors in the rusting of LGS-frames of panels. This report is a part of the results of observations of them at the houses which are actually used. To determine the relative humidity and the temperature, an automatic digital recorder with electronic sensors was used. The results are as follows; 1) The degrees of temperature at the inner part of wall panels are about in the middle of those at the outdoors and at the rooms. And the values of relative humidity at the inner part of wall panels are less changeable than those at the other parts. 2) The mean values of relative humidity at the bath room wall panels (north side) are 10% to 20% higher than those at the living room wall panels (south side). But there are a few houses to which this result is not applied. 3) By the observation of calculated absolute humidity, it was found that the absolute humidity of the inner part of wall panels changes according to the temperature increment and decrement. This phenomenon is thought to be caused by the absorption and radiation of moisture by the materials e.g. plywood and glass wool mat. 4) Comparing the calculated dew-points with the the temperature at the outsides of wall panels, the probability of dew at the inner part of panels are found in all houses.
