5.2 Number of possible damaged historical monument sites in each cluster
The study assessed HMS damage by the flood in 2011, from which a vulnerability value of historical monument sites around Ayutthaya Historical City can be obtained. Classification of the vulnerability value groups, found that most crucial groups are six groups which are extremely high (cluster 2), very high (cluster 6), high (cluster 4), medium (cluster 3), low (cluster 1) and very low (cluster 6).
The results of the number of HMS in each cluster defined for Vulnerability to damage value of sites around Ayutthaya Historical City are shown in figure 7-8.
In this study 489 HMS were assessed. 294 of the HMS in the study areas were classified as extremely high (58 of HMS), very high (108 of HMS) or high (128 of HMS) vulnerability, and were therefore the focus of the study. For the remaining 195 HMS damage assessment was carried out considering the method described (see Figure 7-8).