Brick structures that are predominantly distorted by horizontal displacements (i.e. by changing the soil moisture) are often rehabilitated and stabilised by a horizontally arranged system of tension cables and strands. Cables and strands (i.e. levels) are usually designed at several levels of height, creating horizontally prestressed strips of masonry. The height of the prestressed masonry belt is based primarily on the load-bearing angle. At present, the design of a horizontally structured system of tension strands is intuitive, based on previous experience of similar constructions. Validation of force and load distribution is complicated and, in many cases, impossible even when relevant computer technology is used. This step-by-step report describes the preparatory work involved prior to the measurement of the load angle in real tests of the brick wall, including the pre-evaluated results of the first measurements.