This European Standard specifies the characteristics and performance requirements of autoclaved aerated
concrete (AAC) masonry units for which the main intended uses are different types of load bearing and nonload
bearing applications in all forms of walling including single leaf, cavity, partitions, retaining, basement and
general use below ground level, including walling for fire protection, thermal insulation, sound insulation and
the fabric of chimneys (excluding chimney flue units).
This European Standard includes AAC masonry units with an incorporated insulation not exposed to fire,
and masonry units of an overall rectangular parallelepiped shape, specially shaped and accessory units. AAC
masonry units may consist of layers of different densities where not all of the layers are loadbearing.
It provides for the assessment and verification of constancy of performance (AVCP) of the product to this
European Standard.
The marking requirement for products covered by this European Standard is included.
This European Standard does not cover the requirements for storey height panels, flue linings and masonry
units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to be
exposed to fire. It does not specify standard sizes for autoclaved aerated concrete units nor standard work
dimensions and angles of specially shaped and accessory units. It does not give permissible deviations for
specially shaped and accessory units. It does not cover products intended for use as a damp proof course or
the lining of a chimney.
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