Sentence 9.33.2.1.(1)

Intent 1:

To limit the probability of an inability to maintain the minimum indoor air temperatures [see Sentence 9.33.3.1.(1)], which could lead to the inadequate control of relative humidity, which could lead to condensation.

This is to limit the probability of:

• the generation of pollutants from biological growth or from materials that become unstable on wetting, or
• the deterioration of building elements.

This is to limit the probability of:

• negative effects on the air quality of indoor spaces, or
• the inadequate thermal comfort of persons.

This is to limit the probability of harm to persons.

Intent 2:

To limit the application of Sentence 9.33.1.1.(1) so as to exclude residential buildings that are not occupied in the winter.