Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
What size traps can a 1 1/4" vent pipe vent? |
1 1/4" Vent = 1 1/4" & 1 1/2" Trap 1 1/2" Vent = 2", 3", 4" Trap 2" Vent = +5" Trap |
|
The maximum distance between the vent and the trap is measure from the _______ to the _______ |
Trap weir |
|
What is the maximum allowable drop on a horizontal drain and the vent pipe connection? |
The diameter of the trap arm |
|
What is the minimum distance between the vent and the trap? |
Twice the diameter of the trap arm |
|
What is the maximum allowable vertical distance between the fixture and the trap by Canadian code? By Alberta amendment? |
Canadian code - 48" (1200mm) Alberta Amendment - 36" (900mm) |
|
What is a fixture drain now called if it drains through one complete story |
Waste or Soil Stack, depends what it is draining |
|
A flat vent is a trade name for what kind of vent? |
It requires a cleanout |
|
Why is the continuous waste and vent principle connection considered the best arrangement for venting? |
Because waste water doesn't enter the vent pipe |
|
If your trap is self-siphoning, why might that be happening? |
Trap is too far below the fixture |
|
Why would you have to put a 3" stack vent in a residence even though you could put in a smaller stack vent due to low hydralic loads |
Because the National Plumbing Code of Canada says it requires it |
|
What is the minimum size trap for a lavatory? toilet? |
1 1/4" trap - Lavatory 3" trap - toilet |
|
Why should the vent pipe roof flashing be compartible with the vent pipe? |
To avoid electro-chemical corrosion |
|
What is the primary function of a trap? |
To keep sewer gas from entering into a building |
|
What is the minimum trap seal depth? |
1 1/2" |
|
What is the minimum size trap if it serves two lavatories |
1 1/2" |
|
What would happen if the fall on a trap arm was more than one pipe diameter? |
Self-siphoning |
|
If your fixture has trap seal blowouts, what problem is occuring? |
Back pressure is forcing the trap water back up the fixture outlet pipe, due to partial blockage of the drain |