British Standards Document
BS EN 771-2
Specification for masonry units. Calcium silicate masonry units

https://doi.org/10.3403/30203895U

BS EN 771-2 is maintained by B/519/1. The current release of this standard is:

BS EN 771-2:2011+A1:2015 Specification for masonry units. Calcium silicate masonry units

https://doi.org/10.3403/30203895 (published 30/11/2011)

This standard is available from the following sources:

Other historical versions of this standard document also exist:

BS EN 771-2:2011 [current until 31/03/2016]
BS EN 771-2:2003 [current until 30/11/2011]
BS EN 771-2:2001 [current until 29/09/2003]