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Sheet Metal 2nd Yr > Intro to PD > Flashcards

Intro to PD Flashcards

TRY NOT TO FUCKING FAIL

1
Q

________ _______ are the foundation of parallel line development.

A

Element lines

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2
Q

To properly develop a parallel line development pattern, must have the true length of the:

  1. Baseline.
  2. Element line.
  3. Miter line.
  4. Projection line.
A
  1. Element line.
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3
Q

Primes in parallel line pattern development are names used to identify an _________ _________ ________.

A

Extra element point.

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4
Q

An object not developed with simple parallel line development is a:

  1. Round elbow
  2. Roof jack
  3. Round tee
  4. Boot tee
A
  1. Boot tee
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5
Q

You can develop patterns for spherical objects with the parallel line development.

TRUE or FALSE

A

TRUE

Parallel line development can be used to develop patterns for covering for dome shaped objects.

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6
Q

Parallel line development uses the same steps for any object developed with this method. :

TRUE or FALSE

A

FALSE

More complicated objects may require you to add different steps to your parallel line method, but the basic principles remain the same.

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7
Q

The ______ of the _______ is found in the plan view.

A

The perimeter of the pattern is found in the plan view.

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8
Q

Element line spacing on the stretchout is best developed by:

  1. Stepping of the distance from plan view.
  2. Trial and error.
  3. Calculating and measuring.
  4. Stepping off the distance from the elevation view.
A
  1. Calculating and measuring.
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9
Q

To see what the actual base plate would look like, you could develop a(n)

  1. Bottom view
  2. Auxiliary view.
  3. Plate view.
  4. Ancillary view.
A
  1. Auxiliary view.
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10
Q

What must be labeled on a Pattern?

A
  1. Strech Out Calculation in top right corner
  2. Label ALL views
  3. Label Seam locations
  4. Label the patern INSIDE or OUTSIDE
  5. Label Roll Direction
  6. Label Brake Lines with direction (UP/DN)
  7. Use proper line types. (construction or object)
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11
Q

What is the foundation of Parallel Line Development?

A

Element Lines

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12
Q

To properly develop a parallell line development, you must have the true length of the :

  1. Base Line
  2. Element Line
  3. Miter Line
  4. Projection Line
A
  1. Element Line
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13
Q

Primes in parrel line pattern devlopment are names used to identify an ______ ________ ________ .

A

Extra Element Points

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14
Q

An object NOT developed with parrel line development ia a :

  1. Round Tee
  2. Roof Jake
  3. Round Tee
  4. Boot Tee
A
  1. Boot Tee
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15
Q

When laying out a tee fitting, you start by drawing what view?

A

Side Elevation

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16
Q

Corresponding element lines from the end view and side elevation create :

  1. Stretchout
  2. Miter Line
  3. Hole Pattern
  4. Stub Pattern
A
  1. Miter Line
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17
Q

When lettering or numbering the 12 equal divisions, it is best to start ;

  1. Opposite the seam
  2. 3 Divisions from the seam
  3. In the middle of the strechout
  4. At the seam
A
  1. At the seam
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18
Q

If the stub has the same diameter as the pipe, will the stepped of distance for the hole pattern be :

  1. Unequal
  2. Equal
  3. Same as the circumference
  4. Same as the diameter
A
  1. Equal
19
Q

When laying out a hole pattern, element lines must be extended from _____ view.

A

Elevation view

20
Q

When laying out the stub pattern, the end view all that is required.

TRUE or FALSE

A

TRUE

21
Q

How many divisions are typically used to divide smaller circles?

A

12 divisions

22
Q

When laying out a Y stub pattern it is necessary to have __________ :

  1. just the side elevetion
  2. both side and end views
  3. just the end view
  4. the plan view and hole pattern
A

When laying out a Y stub pattern it is necessary to have,

  1. both side and end views
23
Q

There will be a hidden line in the side elevation view of an on centre pipe Y?

TRUE or FALSE

A

FALSE

24
Q

Y pipes are always laid out at 45* ;

TRUE or FALSE

A

FALSE

25
Q

Hole pattern spacing around the main cylinder is taken from what?

  1. Side View
  2. End View
  3. Plan View
  4. Left or Right side Views
A
  1. End View
26
Q

Stub strectout on a retangular Y is calculated by what?

A

2 L (length) + 2 W (width)

27
Q

Extend elements lines of the _____ view to develop the hole pattern.

  1. side elevation
  2. end
  3. plan
  4. left side
A

Extend elements lines of the SIDE ELEVATION view to develop the hole PATTERN

  1. side elevation
28
Q

Is the pipe diameter critical when developing a Y pipe stub?

  1. No
  2. Yes
  3. Only when the stub is off center
  4. Only when the stub is equal diameter
A
  1. Yes
29
Q

A ________ adjustable elbow can be twisted to form any angle from ___ to ___.

A

A 90* adjustable elbow can be twisted to form any angle from 0* to 90*.

30
Q

Adjustable elbows that are manufactured for commercial applications are typically made from either __ or __ pieces or sections otherwise referred to as ____.

A

Adjustable elbows that are manufactured for commercial applications are typically made from either 5 or 7 pieces or sections otherwise referrred to as gores.

31
Q

Round offsets are required when the pipe must either _____ _ ________ ________ horizontally or vertically.

A

Round offsets are required when the pipe must BYPASS A PERMANENT OBSTRUCTION either horizontally or vertically.

32
Q

The ____ ____ is the where two gores of round elbow meet at the angle.

A

The MITER LINE is the where two gores of round elbow meet at the angle.

33
Q

What is the formula used to calculate the miter angle?

A

Miter Angle =

Degree of Elbow OVER

(2 X number of pieces) - 2

34
Q

What is the formula used to calculate the stretch out pipe?

A

3.14 X diameter = Stretchout

35
Q

What are the 2 methods used to draw the miter line for round elbow?

A
  1. Basic geometry
  2. Protractor
36
Q

The Plan View can be drawn either as a ____________ or ___________ .

A

The Plan View can be drawn either as a FULL PLAN VIEW or HALF PLAN VIEW.

37
Q

When calculating the miter line of a round offset, there are four possible methods which can be used depending on which criteria applies.

State 4 different possibilities.

A
  1. With the Throat given
  2. With the Centerline given
  3. With the Heel given
  4. Bisecting the Centerline
38
Q

The development of a round offset is similar to that of a ___ _____ ______.

A

The development of a round offset is similar to that of a 3 PIECE ELBOW.

39
Q

When the throat height is given when creating the miter line for a round offset, the arc will be drawn from the ______ .

A

When the throat height is given when creating the miter line for a round offset, the arc will be drawn from the THROAT.

40
Q

What is the allowance for an Elbow Seam?

A

1/8 inch

41
Q

Using a _______ connects the points with curves to complete the first gore.

A

Using a FLEXIBLE CURVE connects the points with curves to complete the first gore.

42
Q

What is the allowance for the small end pipe?

A

7 X the material thickness

43
Q

What is the allowance for a grooved seam?

A

3 X the grooved seam.

Sheet Metal 2nd Yr (7 decks)

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