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Lecture 9: Section View II ENGR 0101

Engineering Graphics

Spring 2019

 

 

 

Final Exam

May 12

120 Minutes

 

5 short question (Multiple choice, dimension and autoCAD problems)

1 Multi-view drawing

1 3D Isometric drawing

2 section view drawing

1 extra credit

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View – review

 

 

Section View

 

 

Section View

 

 

Section View

u  1) draw the outline of the cut section

 

 

Section View

 

 

Section View

u  1) draw the outline of the cut section

u  2)every line your cutline touch, there’s something happen

 

 

Section View

 

 

Section View

 

 

Section View

1 2 3

4

5 6

7

5

8

 

 

Section View

u  1) draw the outline of the cut section

u  2)every line your cutline touch, there’s something happen

u  3)measure how the line move up/down once it touch those line

 

 

Section View

1

 

 

Section View

1

In a circular object, event can be moved throught its Circumference

 

 

Section View

 

 

Section View

1

In the new event 1 location, draw a line to the top view, and as you can see, it is 3 unit depth.

 

 

Section View

1

Therefore, the first event goes 3 unit

 

 

Section View

2

In event 2, it goes 2 unit, but it is going back

 

 

Section View

3

In event 3, it goes 1.5 unit

 

 

Section View

4

In event 4, it goes 2.5 unit back

 

 

Section View

5

In event 5, it goes 2.5 unit

 

 

Section View

6

In event 6, it goes 1.5 unit

 

 

Section View

7

In event 7, it goes 2 unit

 

 

Section View

8

In event 8, it goes 3 unit

 

 

Section View

u  1) draw the outline of the cut section

u  2)track every line your cutline touch, there’s an event happen

u  3)measure how the line move up/down once it touch those line

u  Hatch the solid areas

 

 

Section View

 

 

Section View

 

 

Section View It didn’t has arrow here, so you only need to draw half of the object

 

 

Section View There is 5 events here

1 2 3 4

5

 

 

Section View In event 1, you goes through its Circumference. And then draw a straight line to the top view, and you know it is 2 unit

 

 

Section View Next, goes to event 2

 

 

Section View In event 2, the Circumference didn’t really help because its center of circle is not in the center of the object

 

 

Section View However, the small circle in event 2 are similar to the small in the side. Therefore, we can use the side circle as new event 2

 

 

Section View Draw a straight line to top view, it is 2 units

 

 

Section View 2 unit in event 2

 

 

Section View Next, goes to event 3

 

 

Section View Event 3 goes 4 units

 

 

Section View Next, goes to event 4. However, event 4 is a hidden line.

 

 

Section View If an event meets a hidden line, Your section view’s line need to be discontinuous.

 

 

Section View In event 4, it goes 1.5 units from very back

 

 

Section View 1.5 units from very back

 

 

Section View Next, goes to event 5. Since event 4 is break, now it needs both event 3 and 4 go to event 5

 

 

Section View Event 5 goes 2.5 back

 

 

Section View goes 2.5 back

 

 

Section View goes 2.5 back

 

 

Section View close the boundary

 

 

Section View Finally, define where is the empty area,and where is solid area

 

 

Section View Therefore, event 2 to 3. And event 4 to 5 are empty area

empty

empty

 

 

Section View Hatch the solid area

 

 

Section View – practice

 

 

Homework

 

 

homework

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