Podcast
Questions and Answers
In North America, what is the correct sequence for the direction of view in orthographic projection?
In North America, what is the correct sequence for the direction of view in orthographic projection?
- Eye of observer > object > projection plane
- Eye of observer > projection plane > object (correct)
- Projection plane > object > eye of observer
- Projection plane > eye of observer > object
Which projection method is the engineering standard in North America?
Which projection method is the engineering standard in North America?
- Second-angle projection
- First-angle projection
- Fourth-angle projection
- Third-angle projection (correct)
What are the three principal views in orthographic projection?
What are the three principal views in orthographic projection?
- Back, top, profile
- Top, front, right side (correct)
- Front, top, left side
- Frontal, horizontal, profile
In a standard orthographic projection, where is the top view of an object typically placed in relation to the front view?
In a standard orthographic projection, where is the top view of an object typically placed in relation to the front view?
Which pair of orthographic views both display the height dimension of an object?
Which pair of orthographic views both display the height dimension of an object?
If a surface of an object is inclined to a plane of projection, how will it appear in the view?
If a surface of an object is inclined to a plane of projection, how will it appear in the view?
Depending on its orientation relative to the projection plane, what projections can a line have?
Depending on its orientation relative to the projection plane, what projections can a line have?
How many views are typically used to describe an asymmetric object in orthographic projection?
How many views are typically used to describe an asymmetric object in orthographic projection?
In orthographic projection, in which view should the characteristic contour shape of the object be shown, according to good practice?
In orthographic projection, in which view should the characteristic contour shape of the object be shown, according to good practice?
What is the order of precedence for coincident lines in engineering drawings?
What is the order of precedence for coincident lines in engineering drawings?
When a solid line and a hidden line are coincident in a technical drawing, which line should be drawn?
When a solid line and a hidden line are coincident in a technical drawing, which line should be drawn?
If a solid line and a centerline are coincident, which line should be drawn in the technical drawing?
If a solid line and a centerline are coincident, which line should be drawn in the technical drawing?
When a hidden line and a centerline are coincident, which line should be drawn?
When a hidden line and a centerline are coincident, which line should be drawn?
According to standard conventions, what’s a common issue with standard multiview projections?
According to standard conventions, what’s a common issue with standard multiview projections?
In the alphabet of lines, what type of line has precedence over a hidden line?
In the alphabet of lines, what type of line has precedence over a hidden line?
What action must be taken to complete missing information if two views are given?
What action must be taken to complete missing information if two views are given?
By when should the academic integrity quiz be completed?
By when should the academic integrity quiz be completed?
Where can a departmental assignment cover page be downloaded from?
Where can a departmental assignment cover page be downloaded from?
What paperwork is required for manual studio #2?
What paperwork is required for manual studio #2?
Where can someone find the rules for submitting work for grading?
Where can someone find the rules for submitting work for grading?
A short break line is how thick?
A short break line is how thick?
Extension lines are typically drawn at what thickness?
Extension lines are typically drawn at what thickness?
What does the term 'foreshortened' mean in the context of orthographic projection?
What does the term 'foreshortened' mean in the context of orthographic projection?
Which of the following best describes why an engineer might use multiple views in a drawing?
Which of the following best describes why an engineer might use multiple views in a drawing?
What is the most common characteristic shared by these objects?
What is the most common characteristic shared by these objects?
In a scenario where a hidden line is depicted as 'Hidden over center line', which line presentation corresponds to the correct method?
In a scenario where a hidden line is depicted as 'Hidden over center line', which line presentation corresponds to the correct method?
What is the primary role of the MIME Online Student Handbook?
What is the primary role of the MIME Online Student Handbook?
Why might regular multiview projections sometimes be seen as less than ideal?
Why might regular multiview projections sometimes be seen as less than ideal?
The term Eye of observer > projection plane > object relates to:
The term Eye of observer > projection plane > object relates to:
Which of the following statements is true regarding studio work submissions?
Which of the following statements is true regarding studio work submissions?
A cutting plane is how thick?
A cutting plane is how thick?
Phantom Lines are how thick?
Phantom Lines are how thick?
What is a key difference between true projection and conventional method in multiview projection?
What is a key difference between true projection and conventional method in multiview projection?
What does the term Runout refer to?
What does the term Runout refer to?
When choosing a Front View, it is a good idea to:
When choosing a Front View, it is a good idea to:
What is the primary reason true projection is sometimes not preferred?
What is the primary reason true projection is sometimes not preferred?
In multiview projection, what is the primary purpose of using multiple views?
In multiview projection, what is the primary purpose of using multiple views?
What is the purpose of grid paper in Manual Studio #2?
What is the purpose of grid paper in Manual Studio #2?
What is the 'alphabet of lines'?
What is the 'alphabet of lines'?
What should students bring to Manual Studio #2?
What should students bring to Manual Studio #2?
When should the solid line be omitted from a hidden or centerline?
When should the solid line be omitted from a hidden or centerline?
What is a key characteristic that causes regular multiview projections to be considered awkward or misleading?
What is a key characteristic that causes regular multiview projections to be considered awkward or misleading?
Flashcards
Line Order of Precedence
Line Order of Precedence
The order in which lines take precedence in technical drawings to avoid confusion.
Projection in North America?
Projection in North America?
The custom in North America dictates the use of third-angle projection.
Line Projection Possibilities
Line Projection Possibilities
A line may appear as true length, foreshortened, or as a point depending on relationship to the projection plane.
Direction of View Sequence
Direction of View Sequence
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Characteristic Contour View
Characteristic Contour View
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Views for Asymmetric Objects
Views for Asymmetric Objects
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Principal Views
Principal Views
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Top View Placement
Top View Placement
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Views Showing Height
Views Showing Height
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Surface Inclined to Projection Plane
Surface Inclined to Projection Plane
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Study Notes
- Academic Integrity Quiz is due by January 24th at 11:59 PM.
- All homework submissions require a departmental assignment cover page.
- Download the cover page, along with important forms and documentation for MIME, from the MIME Online Student Handbook.
- The handbook is available for download from the provided Toronto Metropolitan University link.
- Students must read and adhere to the rules for submitting work as specified under "Penalties & Deductions".
- Further details on penalties and deductions can be found at the provided Notion link.
- For Manual Studio #2, bring a print of pages for Questions #2 and #3 to the lab.
- Grid paper may be used instead of a print out.
Multiview Principals
- MEC222 course for January 21st & 24th, 2025 (Week 3) will cover multiviews, continued.
- In North America, the direction of view for orthographic projection follows this sequence: eye of observer > projection plane > object.
- Engineering custom in the United States dictates the use of third-angle projection for orthographic projection.
- The three principal views in orthographic projection are the top, front, and right side.
- The top view should be drawn directly above the front view.
- The front and right side orthographic views show the height dimension.
- When a surface is inclined to a plane of projection, it appears foreshortened.
- Depending on the relationship to the projection plane, a line may project its true length, be foreshortened, or appear as a point.
- Asymmetric objects typically require three views to be fully described.
- The characteristic contour shape of an object should be shown in the front view.
Front View Selection
- A good front view selection is the chosen front view which is the most descriptive of the main characteristic of the object.
- Depending on how an object's isometric view is presented, this rule may be altered.
Object Properties In Common
- Overall length, width, and height dimensions are shared by objects
- All objects have the dimensions top, width and height
Line Order of Precedence
- Solid lines take precedence over hidden lines and center lines.
- If a solid line and a hidden line are coincident, draw only the solid line.
- If a solid line and a centerline are coincident, draw only the solid line.
- Hidden lines take precedence over center lines.
- If a hidden line and a centerline are coincident, draw only the hidden line.
- Multiview projections may not always provide a clear representation of the object.
- Depending on the object, true projections may be undesirable, conventional methods are preferred.
Runouts
- Indicates fillets or rounded edges in the drawing.
Hidden Line Conventions
- There are specific rules for situations such as at corners, tangent arcs, and intersections with solid lines.
Alphabet Of Lines
- ASME (American Society of Mechanical Engineers lines consist dimensions and rules
- Guidelines are followed on technical drawings dimensions
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