Assignment 1

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School

Canadore College *

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Course

110-75

Subject

Mechanical Engineering

Date

Jan 9, 2024

Type

docx

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Uploaded by AdmiralHamsterPerson890

Assignment 1 1. The drawing shown below is a corner of a foundation wall shown in plan view with the footings indicated by dashed lines. What type of line is the foundation wall drawn with? Answer – 1  A hidden line is used to represent the foundation wall. 2. What type of line is shown below and what is it used for? Answer – 2  A break line is a wavy or zigzag line used in technical drawings to indicate that a portion of an object or structure has been removed for clarity or to show hidden features. 3. What does line with the arrow symbol and the letter B in the circle indicate? Answer – 3  letter B is used to indicate the section of the structure.

Assignment 1 4. What 2 factors determine the scale that is being used to produce a drawing? Answer – 4  Drawing Size: The physical size of the drawing paper or the desired size of the drawing itself influences the scale selection. The available space on the paper and the level of detail needed can dictate the scale used. For larger drawings, a smaller scale may be chosen to fit the entire project onto the paper, while smaller drawings may use larger scales to capture finer details.  Level of Detail: The level of detail required in the drawing is another important factor in determining the scale. If the drawing needs to showcase intricate details, a larger scale may be chosen to allow for more precise representation. Conversely, if the drawing represents a larger area or requires a broader overview, a smaller scale may be used to fit the entire scope onto the drawing sheet. 5. What type of line is the dashed line forming a square shown below which represents a concrete footing under a concrete floor slab? Answer – 5  Hidden line forming a square shown below which represents a concrete footing under a concrete floor slab.

Assignment 1 6. In Canada what system of measurement does residential construction sector use as its standard unit of measurement for construction drawings? Answer – 6  In Canada, the residential construction sector commonly uses the metric system as its standard unit of measurement for construction drawings.  The metric system, which includes units such as meters, millimeters, and centimeters, is widely adopted in Canada for various applications, including construction, engineering, and manufacturing.  This system provides a standardized and internationally recognized method of measurement that ensures consistency and compatibility in construction practices and documentation. 7. What type of line is shown below pointing from the #38 to the wall assembly? Answer – 7  Heavy Solid 8. What does the line below represent? Answer – 8  Lines used to identify structural elements in technical drawings are typically called structural lines.

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Assignment 1 9. What does the line below represent? Answer 9  A centerline is a type of line used in technical drawings and drafting to represent the axis, symmetry, or midpoint of an object or feature.  It is typically drawn as a long, dashed line consisting of alternating short and long dashes. Centerlines help in conveying the exact position and alignment of symmetrically placed elements, such as holes, circles, or symmetrical features of objects.  They provide a visual reference for design, alignment, and construction purposes, assisting in maintaining balance and consistency in the overall design or layout. 10. What is the actual length of a line that is drawn to represent 5'-0" using the ¼" architect's scale? Answer 10  To find the actual length:  Start with the length on the drawing: 5'-0" (five feet).  Convert the length to inches by multiplying it by 12.  (Since there are 12 inches in a foot):  5' x 12 = 60 inches.  Apply the conversion factor of the scale: 60 inches ÷ 4 = 15 inches.  Therefore, a line drawn to represent 5'-0" using a ¼" architect's scale would have an actual length of 15 inches.

Assignment 1 11. What does CAD stand for? Answer 11  CAD stands for Computer Aided Design 12. Which type of drawings convey most of the information needed for construction? Answer 12  Orthographic projection drawings convey most of the information needed for construction. 13. What type of drawings are usually used for presentation purposes or client reference? Answer – 13  Orthographic drawings and perspective drawings are two types of drawings that are commonly used for presentation purposes or client reference.  Orthographic drawings, also known as architectural or engineering drawings, provide a detailed and accurate representation of the object or space from multiple orthogonal views. These drawings include plans, elevations, and sections, presenting a comprehensive and dimensionally accurate depiction of the design.  Perspective drawings, on the other hand, offer a more realistic and immersive representation of the design by creating a three-dimensional illusion. They convey depth, scale, and spatial relationships, providing clients with a visual understanding of how the design will look in a more lifelike Manne.

Assignment 1 14. Which type of drawing has the length and width edges of an object at 30 0 to the horizon line? Answer 14  Isometric Drawings has the length and width edges of an object at 30 0 to the horizon line? 15. If a dimension line crosses an extension line, which line takes precedent and will continue through uninterrupted? Answer 15.  The extension line takes precedence and continues uninterrupted when it crosses a dimension line.

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