BS EN 771-4:2011+A1:2015 - Specification for masonry units. Autoclaved aerated concrete masonry units

BS EN 771-4:2011+A1:2015

Specification for masonry units. Autoclaved aerated concrete masonry units

Status : Current, Under review   Published : October 2011



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 non-load 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.

Standard NumberBS EN 771-4:2011+A1:2015
TitleSpecification for masonry units. Autoclaved aerated concrete masonry units
StatusCurrent, Under review
Publication Date31 October 2011
Normative References(Required to achieve compliance to this standard)EN 772-16:2011, EN 1052-2, EN ISO 12572, EN 1052-3, EN 772-20, EN 772-13, ISO 12572:2001, EN 680, EN 1745, EN 13501-1, EN 772-1:2011, EN 772-11
Informative References(Provided for Information)305/2011/EU, ISO 12491, 2000/605/EC, EN 1996-1-1, EN 1996-1-2, 96/603/EC, EN 998-2:2010
ReplacesBS EN 771-4:2003
International RelationshipsEN 771-4:2011+A1:2015
Amended ByAmendment, March 2016
Draft Superseded By14/30266142 DC
DescriptorsChimneys, Type testing, Basements, Fire safety, Thermal insulating materials, Brickwork, Loadbearing walls, Cavity walls, Concretes, Partitions, Construction systems parts, Non-loadbearing walls, Retaining walls, Blocks (building), Performance, Sound insulation, Walls, Dimensional tolerances, Bricks, Conformity, Properties, Cellular concrete
Title in FrenchSpécifications pour éléments de maçonnerie. Éléments de maçonnerie en béton cellulaire autoclavé
Title in GermanFestlegungen für Mauersteine. Porenbetonsteine
ISBN978 0 580 79494 0
File Size1.16 MB

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