National Plumbing Cod of Canada 2010 Flashcards
What is a branch?
A soil-or-waste pipe. Upstream - junction of 2 or more SOW pipes or to a SOW stack. Downstream -branch, sump, SOW or building drain.
What is a branch vent?
Lower end - junction of 2 or more vent pipes. Upper end - branch vent, stack vent, vent stack or vent header.
What is a building drain?
The lowest horizontal piping, including any vertical offset, that conducts sewage, clear-water waste or storm water by gravity to a building sewer.
What is a circuit vent?
A vent pipe that serves a number of fixtures and connects to the fixture drain of the most upstream fixture.
What is a continuous vent?
A vent pipe that is an extension of a vertical section of a branch or fixture drain.
What is a dual vent?
A vent pipe that serves 2 fixtures and connects at the junction of the trap arms.
What is a leader?
A pipe that is installed to carry storm water from a roof to a storm building drain or sewer or other place of disposal.
What is a relief vent?
A vent pipe that is used in conjunction with a circuit vent to provide additional air circulation between a drainage system and a venting system.
What is a soil-or-waste (SOW) stack?
A vertical SOW pipe that passes through one or more storeys and includes any offset that is part of the stack.
What is a vent header?
A vent pipe that connects any combination of stack vents or vent stacks to outside air.
What is a vent stack?
Upper end - vent header or outside air. Lower end - SOW stack at or below the lowest SOW pipe connection.
What is a stack vent?
A vent that connects the top of a SOW stack to a vent head or outside air.
What is a yoke vent?
Upper end - vent stack or to a branch vent connected to a vent stack. Lower end - SOW stack.
Which table do you use to size continuous flow if less than 27 fixture units?
Table 2.4.10.6.B. (Branch)
What table do you use to size continuous flow if greater than 27 fixture units?
Table 2.4.10.6.C. (Sanitary Building Drain or Sewer)
Every soil-or-waste stack draining fixture from more than 4 storeys shall have a? Except?
Vent Stack. Except a SOWS that serves as a wet vent does not require a vent stack.
The length of a branch vent shall be its developed length from?
The most distant SOW pipe connection to a vent stack, stack vent, vent header or outside air.
The length of a vent header shall be its developed length from?
The most distant SOW pipe connection to outside air.
The length of a circuit vent shall be its developed length from?
The horizontal SOW pipe connection to a vent stack, stack vent, vent header or outside air.
The length of a stack vent or vent stack shall be its developed length from?
Its lower end to outside air.
What happens when a stack vent serves a wet vent stack that is over 4 storeys high?
It shall extend the full size of the wet vent to outside air.
What is the fist step when sizing a drainage and venting system?
Highlight the SOWS in one color, the stack vent in another color and a third color for the vent stack.
What are the 3 steps to sizing combined building drains?
- Add all the rainwater leaders (liters). 2. Convert the fixture units to liters (do NOT include continuous or semi-continuous flow loads). 3. Convert the continuous or semi-continuous flow to liters. Add all 3 and size using Table 2.4.10.9. (Combined Building Drain).
What is the name of pipe #3?
Branch. Not a sanitary building drain because we don’t know for sure if there is a water closet included in the 100 fixutre units.
A relief vent is only called a relief vent when it is dry from begining to end. What do we call it if it is not dry?
It would be an ARV (acting as a relief vent).
How is an ARV (acting as a relief vent) named? Sized?
Name the drainage/vent as you normally would and put ARV in brackets.
Size the drainage/vent as normal and compare size with Table 2.5.7.1.
When is an ARV (acting as a relief vent) no longer labeled as an ARV?
As soon as we tie another vent into the ARV it is no longer labeled as an ARV.
The hydraulic load on a circuit vent shall include the hydraulic load from?
The fixtures connected to the branch seved by the circuit vent but does NOT include the hydraulic load from ARV’s.
Why is 16, A, E, K not labeled as a vent stack?
Not a vent stack because not draining fixtures from more than 4 storeys; only 3 stories.
