Masonry blocks made of sand-lime bricks can be used as a regulated or non-regulated building product. They are classified as a regulated construction product in accordance with the Building Rules List A Part 1 if they comply with DIN EN 771-2 (Specifications for masonry blocks - Part 2: Sand-lime bricks) and there are no significant deviations from DIN V 106 (Sand-lime bricks with special properties), Section 4.8 as a technical rule. Only in this case can DIN V 106 be used as proof of usability. Compliance with the technical rule is confirmed by the manufacturer in the form of a corresponding declaration of conformity for these products. In accordance with DIN V 106, chamfer stones generally require general building authority approval (abZ) if they are to be used as load-bearing masonry.
For all other masonry blocks made of sand-lime bricks that do not have a declaration of conformity from the manufacturer as a regulated construction product, proof of usability in the form of a general building authority approval (AbZ) is usually required. This is not necessary if the user (planner or contractor) of stones that are (only) marked with the CE mark can prove on his own responsibility (!) on the basis of DIN 20000-402 that they meet the characteristics of DIN V 106.
For masonry in accordance with DIN EN 1996-1-1/NA, only sand-lime bricks of category I according to DIN EN 771-2 with a declared compressive strength may be used in Germany.
Source: bauwion
