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18C > SOC > Flashcards

SOC Flashcards

1
Q

How do you draw vertical lines and slanted lines?

A

By using the T-square to support the triangle

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2
Q

What are the two most common types of triangles?

A

A 45° triangle and a 30 x 60° triangle

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3
Q

Describe a parallel straight edge.

A

Similar to a T-square except it is supported on both things which makes it more accurate.

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4
Q

What is a draftsman triangle?

A

It’s an adjustable triangle to help determine the angle of pre-existing lines.

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5
Q

What are the two types of technical views?

A

Orthographic and pictorial

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6
Q

What is the most common technical view?

A

Orthographic

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7
Q

What is the major advantage of and orthographic drawing?

A

It will show every part of an object that is parallel to the drawing plane in true relative size and position.

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8
Q

What are the three views that you will most likely see an orthographic drawing projected?

A

Front, top, right side

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9
Q

Describe a pictorial drawing question.

A

A drawing that is presented as it appears to the eye. It is easier to visualize an object if its features can be shown in a single view. Typically does not contain any construction details.

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10
Q

What are the three types of pictorial drawings?

A

Isometric, oblique, perspective

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11
Q

How can you identify a isometric view?

A

The object will be tilted so that all three planes from the same angle. This is the most common type of technical drawing. (30° by 60°)

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12
Q

How can you identify an oblique drawing?

A

An object is drawn from the front view but you can see the top and the side as well. (45°)

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13
Q

How can you identify a perspective drawing?

A

A perspective drawing is drawn using a vanishing point.

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14
Q

Describe extension lines.

A

Thin, unbroken line. Used to indicate extent of dimensions.

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15
Q

Describe visible lines.

A

Heavy, unbroken lines. Used to indicate visible edges of an object.

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16
Q

Describe a break (long).

A

Fin, solid rolled line with freehand zigzags. Used to reduce size of drawing required to delineate object and reduce detail.

17
Q

Describe a break (short).

A

Thick, solid freehand lines. Used to indicate a short break.

18
Q

Describe a cutting or viewing plane. (viewing plane optional)

A

Thick, short dashes. Used to show offset with arrowheads to show direction in which section or plane is viewed or taken.

19
Q

Describe a cutting plane for complex or offset views.

A

Sick, short dashes. Used to show offset with airheads the show direction viewed.

20
Q

Describe hidden lines.

A

Medium lines with short, evenly spaced bashes. Used to indicate concealed edges.

21
Q

Describe center lines.

A

Thin lines made up of long and short – is alternating space and constant in length used to indicate symmetry about an axis and location of sinners.

22
Q

Describe dimension lines.

A

Then lines terminated with arrowheads at each end. Used to indicate distance measured.

23
Q

Describe a leader line.

A

Thin line terminated with arrowhead or dot at one end; used to indicate a part, dimension, or other reference.

24
Q

Describe a phantom or datum line.

A

Medium series of one long dashes and too short dashes evenly spaced with long dashes. Used to indicate alternate position of parts, repeated details, or datum plane.

25
Q

What are the two types of symbols?

A

Architectural symbols and material convention symbols.

26
Q

What are the two types of scales?

A

Architects and engineers.

27
Q

Describe the architects scale.

A

Mostly used for building construction and when length is measured in feet and inches.

28
Q

Describe and engineers scale.

A

Used mostly on site plans and Highway projects where distances are measured in feet and tenths of feet.

29
Q

What is the T-square used for?

A

Drawing horizontal lines.

30
Q

What are the three major components of concrete?

A

Water, aggregates, Portland cement

31
Q

What are the two functions of water in a concrete mix?

A

Effects hydration, improve workability

32
Q

Concrete is composed of what composite materials?

A

Coarse aggregate, fine aggregate, hydraulic cement, water, air

33
Q

In aggregates, what is the most common contaminating materials?

A

Dirt, Clay, salt

34
Q

How do you determine the largest practical size for the aggregates?

A

Should not exceed 1/5 the diameter of the wall, 1/3the slab thickness, 3/4 of the clear space between reinforcing bars

35
Q

What are the five types of Portland cement?

A 
Type1-normal Portland
Type2-modified
Type3-high early
Type4-low heat
Type5-sulfate resistant

18C (3 decks)

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