When is a plumbing permit required? correct answer: For any system construction, removal, or repair (full system)
What are the 3 categories of
... [Show More] inspection? correct answer: 1. Rough-in (underground): buried piping
2. Middle rough-in: before drywall (sanitary, storm, and water)
3. Final: all fixtures are in and ready to be used
Is a permit required to fix a leak? correct answer: Nope, but you still have to follow code
Can a homeowner do his/her own installation? correct answer: No, you have to have a licensed plumber in NC for system work
What are the 3 basic parts of the plumbing system? correct answer: Supply, Drain, Fixtures
What are the 3 classes of pipe in a drainage system? correct answer: Drain (waste), Traps, Vents
What are the 3 basic outdoor plumbing combos? correct answer: City H20 + City Sewer ( no new infrastructure)
Well + Septic (homeowner, 'off-grid')
City H20 + Septic (water is easier to install than sewer)
What is an isometric plumbing drawing?
What angle does it meet at?
What is another name for this type of drawing? correct answer: A 3D representation of pipes, fittings and fixtures on a 2D platform.
120degrees.
Riser diagram.
How much is 1 F.U. Value? correct answer: 7.5 gal/min
1 cubic foot
What is the minimum fall/foot? correct answer: 1/4in per 1ft (horizontal pipes)
What's the difference between a drain pipe and a waste line? correct answer: Drain: organic waste
Waste line: liquid waste
What is the minimum size for a building drain?
When is this not the case? correct answer: 3"
When you have more than 2 water closets, it becomes 4"
Where do the building drain and building sewer meet?
What size is the sewer drain? correct answer: They meet outside of the house, the sewer drain is brings waste to a septic tank, or to the municipal system.
4"
What is the normal carrying capacity of a drain pipe? correct answer: 1/3 of its interior diameter
What is the minimum size drain for a WC? correct answer: 3"
What is the purpose of the vent in a system? correct answer: To introduce air to the system, regulating pressure.
What is a wet vent? correct answer: A vent that allows waste to flow out and air to flow in.
What is the minimum size of a WC vent? correct answer: 2"
What is the minimum size of the VTR? correct answer: 3"
Are all fixtures required to have an individual vent? correct answer: Nope, but they have to be within 15' of the VTR and sometimes it would be silly to run piping through the whole house to vent, so you bust out 2.
What is the purpose of a trap? correct answer: To block sewer gas from coming back into the house
5 ways the trap seal can be broken? correct answer: 1. There is bad ventilation and excess pressure
2. The fixture isnt used enough, the H2O evaporates
3. Bad things get flushed and absorb the H2O
4. Weather (wind) come into the vent
5. Bad installation of the trap
If installed properly traps DO NOT LEAK, because they are an unbroken entity
Which fixtures require a trap? correct answer: All but the toilet (cause it gots a built in one)
What/where is the crown weir? correct answer: It is the top of the liquid seal, located on the outlet side of a toilet [Show Less]