3.4.2 Definition of environmental classes
The environmental classes used in durability design
in South Africa are related to the EN 206 classes as
modified for South African conditions (Table 1). As
discussed in the previous section, it needs to be established
whether the current environmental classes are
sufficient in describing potential deterioration mechanisms,
or whether a more refined approach needs to
be developed that classifies environmental exposure
based on the prevailing climate conditions.