| 4. | Layout of system of drainage |
| 5. | Construction of drainage works |
| 6. | Requirements as to drainage pipes |
| 7. | Jointing of pipes used for drains |
| 8. | Requirements as to soil, ventilating and waste pipes |
| 9. | Requirements as to rainwater pipes, gutters and fittings |
| 10. | Connection of soil pipes to drain |
| 11. | Connection of soil fitments to soil pipes |
| 12. | Waste pipes |
| 13. | Gully traps |