| Feature | Rate |
| Cross section shape | Rectangular |
| Width | 30 cm |
| Height | 40 cm |
| Reinforcement in the corners | 4Φ16 |
| Upper and lower side reinforcement | Φ12/side |
| Lateral side reinforcement | 2Φ12/side |
| Total reinforcement | 4Φ16 + 6Φ12 |