Specification for masonry units - Part 3: Aggregate concrete masonry units (Dense and light-weight aggregates); German version EN 771-3:2003 + A1:2005— 36 стр.
Methods of test for masonry units - Part 20: Determination of flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units; German version EN 772-20:2000— 4 стр.
Precast concrete products - Normal weight and lightweight concrete shuttering blocks - Product properties and performance; German version EN 15435:2008— 44 стр.
Methods of test for masonry units - Part 20: Determination of flatness of faces of aggregate concrete, manufactured stone and natural stone masonry units; German version EN 772-20:2000— 4 стр.
Specification for masonry units - Part 3: Aggregate concrete masonry units (Dense and lightweight aggregates); German version EN 771-3:2011+A1:2015— 45 стр.