| Value | Category | Cases | |
|---|---|---|---|
| 1 | Stone | 974 |
32.4%
|
| 2 | Stone and concrete | 456 |
15.2%
|
| 3 | Concrete | 141 |
4.7%
|
| 4 | Concrete Blocks | 425 |
14.2%
|
| 5 | Clayey Blocks | 4 |
0.1%
|
| 6 | Old stone | 979 |
32.6%
|
| 7 | Other | 23 |
0.8%
|