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Plumbing Level 1 > Drafting > Flashcards

Drafting Flashcards

1
Q

What should the surface of a drafting board be?
5 things

A

Smooth, have a true surface, no warps or twists and made of vinyl.

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2
Q

What are drafting tables capable of?

A

Can be set at different heights and angles.

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3
Q

What dimension are drafting tables?

A

Width: min 1.2 m (4ft)
Height: 0.9m (3ft)`

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4
Q

What are the dimensions of a T-square?

A

0.75m (30”) - 1m (42”) long

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5
Q

What is a T-square used for?

A

To draw horizontal lines

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6
Q

What is the Fixed T - squared used for?

A

Most work

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7
Q

What kind of lines does the T square draw?

A

Horizontal lines

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8
Q

What is the French curve made of?
What does it help you draw?

A

Plastic or steel
Helps draw curves

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9
Q

What is the modern term for a spline?

A

A flexible curve

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10
Q

What is the spline (aka flexible curve) used for?

A

Also drawing curves

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11
Q

Drawing pencils:
true or false: this scale goes from softest to hardest, 6B, 2B, B, H, 4H, 9H

A

True
6B = very soft / black
9H = hardest

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12
Q

What are the softer grade drawing pencils used for?

A

sketching / rendering

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13
Q

What are the harder grade drawing pencils used for?

A

Instrument drawings

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14
Q

What is the point of scale rules?

A

The allow us to draw diagrams of piping systems / other objects at a reduced scale

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15
Q

What measurement does the Architect’s scale rule use?

A

inches and fractions of inches

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16
Q

When there is no template for a larger circle what can be used?

A

Compasses:
Bow
Wing
Friction compass

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17
Q

What is the most common Architect’s scale ratio used?

A

1/4 “ = 1’ - 0”

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18
Q

True or False: Architect’s ruler container two scales that run in opposite directions?

A

True

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19
Q

What are:
1/8” scales (b)
1/4” scales (s - b/h)
1/2” scales (d) used for?

A

1) Larger buildings
2) smaller buildings and houses
3) scale for details

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20
Q

Now in metric…
what does
1:100 (Lb)
1:50 (sb)
1:20 (details)

A

1) larger buildings
2) smaller buildings
3) details

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21
Q

True or false: Photocopies / reproductions of drawings are always to scale or the original?

A

False: they may not be to the scale of the original

22
Q

What does the movable metal hook at the end of the tape measure provide?

A

Accurate measuring when butted up against or hooked on the end of something.

23
Q

What happens when you divide the length on a drawing by the scale fraction or number?

A

You’d be calculating the length in feet…
1/4” = dividing by 4
1/8” = dividing by 8
1/2” = dividing by 2

24
Q

What must symbols be?

A

simple and easy to draw

25
Q

What is the symbol / abbreviation for Cold water?

A

___-____-____
CW

26
Q

What is the symbol / abbreviation for Hot water (140F)

A

____- - ____- - ____- - ____
HW

27
Q

What is the symbol / abbreviation for Hot water return (recirc) (140F)

A

____- - - ____- - - ____ - - - ____
HWR

28
Q

Butt weld has:
A) filled in circles
B) empty circles

A

A) filled in circles

29
Q

What symbol does a Soldered 90 have?

A

empty circles with line drawn through

30
Q

What does Safety Relief Valve look like

A
31
Q

What does an angle pattern globe valve look like?

A
32
Q

What does an Object line / Margin Line look like?

A

______________
Heavy solid line
Shows visible shape, edges / outlines

33
Q

What does a Hidden Body Line look like?

A

Short dashes
Shows hidden object lines not visible to the eye

34
Q

What is a Leader Line?

A

Points to notes or specification

35
Q

What is a Cutting Plane Line?

A

Shows a section view / an imaginary cross-section

36
Q

True or False: Letters and Numbers must be black

A

True: It makes them easier to read / stand out

37
Q

What is the angle used in Isometric views?

A

30 degrees

38
Q

How many views does an Orthographic view have?

A

multiple BUT each projection view shows only ONE face of an object.

Ex: front, side, top or box. Think of an unfolded box

39
Q

Which views are necessary in an Orthographic view?

A

Front, Top, and Right-Side views

If an object is more complex more views are needed.

40
Q

What does a 90 angle look like?

A

Plan view

Front elevation Right elevation

41
Q

What does a Tee look like facing away from you?

A

think star wars

42
Q

What 3 dimensions do Isometric drawings use?

A

length, width and height

43
Q

True or False: Piping runs that are not parallel to the isometric axes will not be to scale

A

True. it needs to show length, height and width

44
Q

What is the main purpose of building codes?

A

to protect public health, safety and general welfare because building codes relate to the construction / occupancy of buildings and structures

45
Q

What happens when standards are referenced in codes / regulations?

A

They become laws

46
Q

What does the Canadian Standards Association symbol look like?

A
47
Q

When is a plumbing permit required?

A

Install, change or upgrade any part of a plumbing system

Do repair or replacement work, if you have to:

Open walls

move pipes

Changes other plumbing or pips

48
Q

LEED is a program that provides what?

A

third-party verification of green buildings

49
Q

What does LEED stand for?

A

Leadership in Energy and Environmental Design

50
Q

What does NPC stand for?

A

National Plumbing Code

51
Q

BC plumbing (BCPC) applies the core concepts of what?

A

National Plumbing Code

52
Q

Once equipment is installed, what happens?

A

Instructions should be left with the customer for future reference.

Plumbing Level 1 (14 decks)

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