BS EN 845-2:2003

This European Standard specifies requirements for prefabricated lintels for spans over clear openings in a masonry wall up to a maximum of 4.5 m and made from steel, autoclaved aerated concrete, manufactured stone, concrete, fired clay units, calcium silicate units, natural stone units, or using a combination of these materials. This standard is not applicable to:

a) lintels completely made on site

b) lintels, the tensile parts of which are made on site

c) timber lintels

d) natural stone lintels, not reinforced.

This standard does not cover linear components spanning clear openings greater than 4.5 m in masonry walls and linear components intended for use independently in a structural role (e.g. beams).