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1. Where are the statutory requirements for the installation of drainage systems ?
2. If a discharge branch has a gradient of 18mm per metre and the branch is 3 metres in length, what would the vertical drop distance be ?
3. The maximum recommended length of a discharge pipe from a bath connected to a primary ventilated stack is :
4. If foul water and sewage were to come into contact with a plumber’s skin, the plumber could contract :
5. After a performance test, what is the minimum trap seal depth allowed ?
6. In the Victorian period, what was a common material used in guttering ?
7. What would be the best way to prevent a customer from using a sanitary appliance whilst work is being carried out on the soil stack ?
8. What is recommended to stop crossflow in a soil stack opposite a WC?
9. If an air admittance valve is located within some boxing, what is required to allow the valve to operate effectively ?
10. What problem may occur if the waste pipe gradient from a washbasin is too steep ?
11. What type of fitting is used to connect the appliance to the drainage discharge pipework ?
12. Which British standard refers to good workman ship on drainage systems ?
13. Baths and sinks use a combination overflow, where would the overflow connect into the drainage system ?
14. When an appliance such as a wash basin has a integral overflow, what type of waste needs to be fitted ?
15. Which of the following would be connected to the soil stack with a 1 ¼ inch waste pipe ?
16. What size waste pipe would be used to connect a basin to the soil pipe ?
17. When an appliance such as a shower has a no overflow, what type of waste needs to be fitted ?
18. What depth of trap seal is inside a WC trap ?
19. What type of over flow does a Londoner sink have ?
20. What size waste pipe would be used to connect a Slab Urinal to the soil pipe ?
21. What part of the building regulations refer to drainage systems ?
22. What would be the correct, corrective action if Wavering Out was found to be the reason for loss trap seal ?
23. What is a Re-sealing trap ?
24. What size waste is required on a kitchen sink for a food disposal unit to be fitted ?
25. What would be the correct, corrective action if Compression was found to be the reason for loss trap seal ?
26. When doing a soundness test on above ground drainage, how much should the manometer be pressured to ?
27. What would be the gutter size and outlet size if the area of a 60° roof measures 9 x 4 ?
28. What is the recommended gradient for a Bath discharge pipe ?
29. What stack system has connections within 300mm of the appliances ?
30. What must be avoided when making connections to the main stack ?
31. What is the maximum length of the discharge branch for a WC toilet ?
32. If a basins discharge pipe was 1.9m long what size pipe would be used ?
33. What is the most common stack system ?
34. When installing a ventilation pipe for a single appliance what size pipe is used ?
35. On a stub stack system what is the maximum distance from the stack to the main vented stack ?
36. What is the minimum size of the stack in a 15 story building
37. What must be on the end of the ventilation pipe that protrudes through the roof line ?
38. On a Secondary Ventilated System what is ventilated ?
39. On a stub stack system what is the maximum distance from the invert of the swept bend to the lowest connection ?
40. If a vent is within 3m of an opening window how much must it extend above the window ?
