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Plumbing IP > National Plumbing Cod of Canada 2010 > Flashcards

National Plumbing Cod of Canada 2010 Flashcards

1
Q

What is a branch?

A

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.

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2
Q

What is a branch vent?

A

Lower end - junction of 2 or more vent pipes. Upper end - branch vent, stack vent, vent stack or vent header.

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3
Q

What is a building drain?

A

The lowest horizontal piping, including any vertical offset, that conducts sewage, clear-water waste or storm water by gravity to a building sewer.

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4
Q

What is a circuit vent?

A

A vent pipe that serves a number of fixtures and connects to the fixture drain of the most upstream fixture.

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5
Q

What is a continuous vent?

A

A vent pipe that is an extension of a vertical section of a branch or fixture drain.

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6
Q

What is a dual vent?

A

A vent pipe that serves 2 fixtures and connects at the junction of the trap arms.

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7
Q

What is a leader?

A

A pipe that is installed to carry storm water from a roof to a storm building drain or sewer or other place of disposal.

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8
Q

What is a relief vent?

A

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.

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9
Q

What is a soil-or-waste (SOW) stack?

A

A vertical SOW pipe that passes through one or more storeys and includes any offset that is part of the stack.

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10
Q

What is a vent header?

A

A vent pipe that connects any combination of stack vents or vent stacks to outside air.

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11
Q

What is a vent stack?

A

Upper end - vent header or outside air. Lower end - SOW stack at or below the lowest SOW pipe connection.

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12
Q

What is a stack vent?

A

A vent that connects the top of a SOW stack to a vent head or outside air.

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13
Q

What is a yoke vent?

A

Upper end - vent stack or to a branch vent connected to a vent stack. Lower end - SOW stack.

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14
Q

Which table do you use to size continuous flow if less than 27 fixture units?

A

Table 2.4.10.6.B. (Branch)

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15
Q

What table do you use to size continuous flow if greater than 27 fixture units?

A

Table 2.4.10.6.C. (Sanitary Building Drain or Sewer)

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16
Q

Every soil-or-waste stack draining fixture from more than 4 storeys shall have a? Except?

A

Vent Stack. Except a SOWS that serves as a wet vent does not require a vent stack.

17
Q

The length of a branch vent shall be its developed length from?

A

The most distant SOW pipe connection to a vent stack, stack vent, vent header or outside air.

18
Q

The length of a vent header shall be its developed length from?

A

The most distant SOW pipe connection to outside air.

19
Q

The length of a circuit vent shall be its developed length from?

A

The horizontal SOW pipe connection to a vent stack, stack vent, vent header or outside air.

20
Q

The length of a stack vent or vent stack shall be its developed length from?

A

Its lower end to outside air.

21
Q

What happens when a stack vent serves a wet vent stack that is over 4 storeys high?

A

It shall extend the full size of the wet vent to outside air.

22
Q

What is the fist step when sizing a drainage and venting system?

A

Highlight the SOWS in one color, the stack vent in another color and a third color for the vent stack.

23
Q

What are the 3 steps to sizing combined building drains?

A
  1. 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).
24
Q

What is the name of pipe #3?

A

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.

25
Q

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?

A

It would be an ARV (acting as a relief vent).

26
Q

How is an ARV (acting as a relief vent) named? Sized?

A

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.

27
Q

When is an ARV (acting as a relief vent) no longer labeled as an ARV?

A

As soon as we tie another vent into the ARV it is no longer labeled as an ARV.

28
Q

The hydraulic load on a circuit vent shall include the hydraulic load from?

A

The fixtures connected to the branch seved by the circuit vent but does NOT include the hydraulic load from ARV’s.

29
Q

Why is 16, A, E, K not labeled as a vent stack?

A

Not a vent stack because not draining fixtures from more than 4 storeys; only 3 stories.

Plumbing IP (6 decks)

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