**4.1 Interpretation of quality through the crack walls**

The picture of the lesions is highly indicative of detecting the quality of the walls. Irregular cracks or degradation on the wall layer, which are spread everywhere, indicate that the wall is not properly connected with its unit element brick or could be a sign of separation of masonry layers. Therefore, masonry walls could be at risk of getting damaged or collapsed.

The masonry wall has a monolithic behavior, and the wall is composed of two or more layers. The layers of the masonry walls were attached to retain their shape and *Morphology of the Vernacular Masonry Structure in Adana City and Its Qualitative Analysis… DOI: http://dx.doi.org/10.5772/intechopen.108692*

form under horizontal and vertical forces. But lesions on the layers could decrease the connection and overall functioning of the masonry wall.

The purpose of the survey of the masonry is to define the degradation and failures of the materials and structure. By these definitions, the damage mechanism of the masonry structure is identified. In the analysis of typical vulnerabilities of the structure, defining degradation and disruption of the structure is to be determined.

The figures in **Tables 1**–**3** are the proposal symbolism for the representation of the crack and degradation of the masonry wall structures (**Tables 1**–**3**), [8–11].
