DIN EN 771-4:2011-07

This European Standard specifies the characteristics and performance requirements of autoclaved aerated concrete masonry units mainly used in different types of load bearing or nonload bearing building and civil engineering applications and for all forms of walling including single leaf, cavity, partitions, retaining, basement and general use below ground level, including walling for fire protection, thermal insulation and sound insulation. It is also applicable to the fabrication of chimneys (excluding chimney flue units). It specifies requirements related to, for instance, strength, density, dimensional accuracy, etcetera, and specifies the evaluation of conformity of the product to this European Standard. The marking requirement for products covered by this European Standard is specified. This European Standard does not apply to storey height panels, flue linings and masonry units for fabrication of a damp proof course. It does not apply to masonry units with an incorporated thermal insulation material bonded to the faces of the unit susceptible to be exposed to fire. It does not provide standard sizes for autoclaved aerated concrete units nor standard work dimensions and angles of specially shaped and accessory units. It does not contain permissible deviations for specially shaped and accessory units. Products intended for use as a damp proof course or the lining of a chimney are not covered. The Committee responsible for this standard is NA 005-06-02 AA "Koordinierungsausschuss Mauersteine (SpA zu CEN/TC 125/WG 1)" ("Coordinating committee Masonry Units (Mirror Committee of CEN/TC 125/WG 1)") at DIN.