BS EN 846-14 is the 14th part of the multiple series document that is applicable to ancillary components for masonry.
BS EN 846-14 specifies a method for determining the in-plane initial shear strength of the horizontal bed joint between the prefabricated part of a composite lintel and the masonry above it, using a specimen tested in shear.
BS EN 846-14 on the determination of the initial shear strength between the prefabricated part of a composite lintel and the masonry above it is useful for:
Masonry shear strength refers to the strength of masonry that has been subjected to shear forces. The initial shear strength of the horizontal bed joint between the prefabricated part of a composite lintel and the masonry above it is derived from the strength of small specimens tested to destruction. The specimens are tested in shear under a four-point load.
Two procedures A and B are included in BS EN 846-14. Procedure A comprises testing specimens at various precompressions, with a linear regression curve to zero prestress defining the initial shear strength. Procedure B comprises testing specimens at zero precompression, which will allow you to calculate a distinctive initial shear strength from the results using a simple or statistical analysis.
Overall, BS EN 846-14 helps you to determine the initial shear strength between the prefabricated part of a composite lintel and the masonry above it which will help you to improve the masonry processes.
EN 846-14:2012