Bundesverband Kalksandsteinindustrie eV, Head of Standardisation Department, Hannover, Germany


Large size calcium silicate elements (masonry units with nominal heights from 498 mm to 648 mm and nominal lengths from 498 mm to 998 mm) for use with joints made of thin layer mortar have been regulated in general technical approvals in Germany since the early seventies. In the Netherlands large size elements were introduced for the first time in Dutch standards in 1977. After a period of 35 years and after being used in thousands of newly constructed buildings the design and calculation of masonry structures with large size elements is now also being regulated for the first time in the standards in Germany as normal masonry in DIN 1053. This paper will demonstrate the characteristics of masonry built of large size calcium silicate elements with joints made of thin layer mortar. The potential of the excellent compressive strength will be discussed and the reader will be guided to the particular regulations on the length of unit overlap that has to be considered in the calculation. The specific rules in the national standards will be presented and the effects on the design according to EN 1996-1-1 (Eurocode 6) will be clarified from the German point of view.

Key words
large size calcium silicate elements, standardisation, compressive strength, EN 1996-1-1