DWV Flashcards
According to the national plumbing code of Canada, what is the maximum permissible developed length of a fixture outlet pipe?
1200 mm
What will be the minimum required size of the drain pipe on a stack if it is serving three tank type bathroom groups, draining to a stack branch that connects to the top of the soil. Waste on the floor above the first bathroom group.
4 inch
Where must a relief and connect when circumventing
To the circuit vented branch downstream of the most downstream circuit vented fixture
What is the maximum number of water clauses that can be served by a wet vent?
2
From a branch vent how do you figure out the develops length?
The length from the branch vent to the for this fixture
What relationship does the sizing of a relief and have with
The relief bin must be one size smaller
Circumvented branch must be
Horizontal
Maximum load to a relief fent is how many fixture units
Six
Can you have a loop vent under flood level rim?
Yes
Floor drains under 450 mil need to be vented true or false
True
Stack vents need to be
Nominally vertical
What is the minimum size of a wet portion of an additional circuit vent?
2 inch
Circumvented branches installed on the main floor of a building with one circuit vent and relief vent. What is the maximum change in direction between the circuit vent and the relief vent connections on the circuit vented branch?
45°
What is the maximum load permitted to drain into a circuit vent from one fixture?
1.5 fixture units.
When two water causets are being served by a horizontal wet vent, how much they connect to the wet vent
With the double wye if the vent pipe is horizontal
25211C
If you have a stack with four stories with a bathroom group on each floor, what size can clean out be at the base of the stack?
3 inch
A wet vent bathroom group is acting as a relief vent for a circuit vented branch that has water closets, draining into it. What will be the size of the clean out serving the relief vent
3 inch
When must a a additional circuit vent be installed?
When there is more than eight circuit vented fixtures between the circuit vent, and the relief vent
A shower trap that is 2 inch is draining to a circuit vented branch. What is the maximum change of direction permitted on the trap arm for the shower from the showers trap weir to the circuit vented branch
135°
Where event pipe passes through a roof It’s subject to frost closure. What can be done to prevent this from
Increase the diameter of the vent pipe by at least one size, but not less than 3 inches
The upper end of every store wheeler waste stack she’ll terminate to a
Stack vent
Is the length of a wet vent limited by any means
No
What is the national plumbing code for minimum size vent for a fixture vent?
25552
What is the maximum trap arm change of direction
135°
What is the minimum trap sealed depth?
Inch and a half or 38 mm
What is the order of the parts for an individual vented kitchen sink, drain starting at the kitchen sink
Basket, strainer, fixture outlet pipe, P-trap trap arm fixture drain
