| Value | Category | Cases | |
|---|---|---|---|
| 1 | Reinforced concrete casting | 12757 |
50.7%
|
| 2 | Iron bars | 6908 |
27.5%
|
| 3 | Wood | 4629 |
18.4%
|
| 4 | Others | 846 |
3.4%
|
| Sysmiss | 6 |