| Value | Category | Cases | |
|---|---|---|---|
| 1 | reinforced concrete casting | 5910 |
68.6%
|
| 2 | iron bars | 2165 |
25.1%
|
| 3 | wood | 374 |
4.3%
|
| 4 | tarp | 19 |
0.2%
|
| 5 | Sandwich panel | 109 |
1.3%
|
| 6 | other (specify) | 38 |
0.4%
|