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Plumber's Licensing Exam: Sanitary Drainage
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Plumber's Licensing Exam: Sanitary Drainage
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25 Questions

1. Glass pipe can be joined by heating and melting (welding) the glass together.
2. Vitrified clay tile pipe can be used for a building drain.
3. A horizontal branch carrying 34 DFUs must have a pipe diameter of
4. A cleanout must be installed at every change of direction in a building drain.
5. Every soil stack requires a cleanout at its base.
6. A local vent
7. Approved methods for joining cast-iron pipe include
8. In a food service establishment, exposed drainage piping can be installed
9. A wye can be used to convey waste in
10. Concrete pipe is acceptable for an underground building drain.
11. A 2-in. horizontal branch can carry ___________ DFUs.
12. One bathroom group, one laundry tray, one kitchen sink, and a half-bath consisting of a water closet and a lavatory have a drainage load of
13. Approved methods for joining concrete pipe are
14. A sump pit must
15. Purple primer is no longer used on PVC solvent weld joints.
16. A tee wye can be used to convey waste in a horizontal to horizontal pattern.
17. A bathroom group has a DFU value of
18. Manholes must be installed on sewer pipes greater in diameter than
19. Waste that can enter a building subdrain can be the discharge from
20. Accepted cement for PVC pipe includes
21. A backwater valve is installed if the elevation of the nearest manhole is above the elevation of the flood-level rim of any fixture.
22. Which fittings can be used directly below a water closet connection?
23. Most flat-bottomed fixtures have a DFU value of
24. Lead pipe can be used for chemical waste.
25. A sewage ejector must

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