DIN EN 1742:1998-06

The document specifies a method of determining the shear strength between the different layers of prefabricated multilayer components made of autoclaved aerated concrete or lightweight aggregate concrete with open structure. The shear strength between different layers of a multilayer component is determined by applying a horizontal compression force acting in the longitudinal direction of the component at one end face on the bottom layer, while the component is resting in horizontal position on two roller supports near its ends and is supportet at the opposite end at the top layer against horizontal displacement and uplifting. The shear strength is calculated from the resulting shear force acting in the plane of the component at fracture by dividing it by the measured length and width of component.