How Do You Determine The Orientation Of Orthographic Projections In A Multiview Drawing?

Glass Box

November eight, 2022

Objective: will design and build a "glass" box from a flat sheet of transparency film. Y'all will and then use your glass box to assist y'all sketch orthographic projections of an object and create multiview drawings.

Process:

• Brainstorm additional cube nets. Sketch as many boosted cube nets equally you can recall of in your PLTW Technology Notebook or on orthographic grid paper. Avoid nets that are rotations or reflections of those already identified.
• Can you see a pattern to the nets that will fold into a cube?
• How many squares are included in a cube net? Why is this always the instance?

There are half-dozen squares that are included in a cube net. This is always the case, because there are 6 faces on a cube.

• What else is true near the system of the squares in a cube internet?

The arrangement of a the square in a cube net can't go in a straight line, and in that location can't be more than ii squares going in some other direction.

• Put an X through your sketches that are non unique, that is, ones that are rotations or reflections of the nets you identified in step 1 or sketched previously in step 2.
• There should be at to the lowest degree 6 unique cube nets. Sketch any cube nets that you may have missed in step two.
• You volition employ one of your cube nets to build a transparent "glass" box from transparency motion picture. You will then place an object within your glass box and sketch all 6 orthographic projections of the object on the box.
• Remember that the orthographic projections of a multiview sketch are carefully oriented with respect to the betoken of view shown by each. The principle multiview used in the United States (called third-bending projection) provides orthographic projections arranged and aligned as shown in the following drawings.

Glass Box Activity Notes:

Model of Cube:

Determination Questions:

one. How do y'all make up one's mind the orientation of orthographic projections in a multiview cartoon?

Y'all tin determine the orientation of the orthographic projections in a multiview

cartoon by where the drawing is positioned, whether its the front, back, top, etc.

two.How would you draw the geometric relationship that exists betwixt the side by side views of a multiview drawing?

The geometric relationship that exists between the adjacent views of a multiview

drawing is that they would all have the same dimensions.

iii.Why is it important to lay out a multiview sketch with points and construction lines before y'all draw object lines?

    It is important to lay out a multiview sketch with points and construction lines before

y'all describe object lines considering it helps tell whether it'due south in orthogonal or perspective

view.

Source: https://sites.google.com/a/carmelhs.org/mnoonanportfolio/intro-to-egineering/unit-2/activity-2-3

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