Moisture accumulation in the assembly joint of the window block abutment to the wall opening

The object of research is a typical assembly joint of the window block junction with the wall opening. Method. The moisture regime of the typical assembly joint is calculated in a similar manner as for the enclosing structures. The study used the method of determining the maximum wetting plane; the graph-analytical method; an approximate analytical method for determining the position of the plane of possible condensation; an assessment of annual moisture accumulation and a test for compliance with the Rogers principle. Results. The calculation of the typical assembly joint using the maximum wetting plane revealed limitations in the tabular data. The analysis of the studies also revealed a high error in the formula for determining the partial pressure of saturated vapor at sub-zero temperatures. The approximate analytical method for determining the position of the plane of possible condensation also revealed limitations of the tabular data. The graph-analytical method did not reveal any intersection of the curves and at a temperature of -6.5 °C (the average January temperature), which indicates the absence of condensation at higher temperatures. An assessment of annual moisture accumulation showed that no moisture accumulation occurs throughout the year. The calculation identified a plane of maximum condensation at the outer boundary of the assembly joint. A rapid inspection using Rogers' principle confirmed the correct execution of the assembly joint. The identified deficiencies in the methods indicate the need for additional research to assess the moisture conditions of assembly joints, as the methods used form the basis of current regulatory documents.