1. Multiview drawings

2. Technical drawings/multiview drawings
GIVES CLEARER MORE ACCURATE DESCRIPTION OF OBJECT THAN A PICTURE OR WRITTEN DESCRIPTION
VIEWS OF THE OBJECT AS IT IS SEEN FROM DIFFERENT POSITIONS
VIEWS ARE ARRANGED IN A STANDARD ORDER

3. SIX VIEWS OF AN OBJECT MOST OBJECTS HAVE SIX SIDES/VIEWS:
TOP
BOTTOM
FRONT
REAR
RIGHT-SIDE
LEFT-SIDE
TYPICALLY ONLY 2-3 VIEWS ARE NEEDED TO COMPLETELY SHOW THE SHAPE AND SIZE OF AN OBJECT

4. NORMAL VIEWS THREE MOST COMMON VIEWS:
FRONT: SHOWS WIDTH AND HEIGHT
TOP: SHOWS WIDTH AND DEPTH
RIGHT-SIDE: SHOWS DEPTH AND HEIGHT
TYPICALLY ONLY NEED 3 VIEWS BECAUSE SOME VIEWS GIVE SAME INFORMATION FOUND ON OTHER VIEWS

5. ORTHOGRAHIC PROJECTION
PROCESS OF PROJECTING 2 OR MORE VIEWS OF AN OBJECT ONTO IMAGINARY PLANES BY DRAWING LINES PERPENDICULAR FROM THE OBJECT TO THE PLANES
VIEWS THAT MAKE UP MULTIVIEW DRAWINGS ARE CREATED THROUGH ORTHOGRAPHIC PROJECTION
MADE WITH THREE PLANES:
VERTICAL/FRONTAL
HORIZONTAL
PROFILE
PICTORIAL DRAWING IS THE 3D SHAPE
USED WHEN CREATING TECHNICAL
DRAWINGS

6. ANGLES OF PROJECTION FRONT
VERTICAL AND HORIZONTAL PLANES DIVIDE THE SPACE INTO 4 QUADRANTS
FIRST ANGLE PROJECTION: USED IN EUROPEAN COUNTRIES
THIRD ANGLE PROJECTION: USED IN THE U.S. AND CANADA
FRONT VIEW IS PROJECTED ONTO THE VERTICAL PLANE
TOP VIEW IS PROJECTED ONTO THE HORIZONTAL PLANE
RIGHT-SIDE VIEW IS PROJECTED ONTO THE PROFILE PLANE
Show vertical (front of face), horizontal (top of head), profile (side of face)
FRONT

7. DECIDING WHICH VIEWS TO USE
FRONT VIEW IS TYPICALLY THE ONE THAT SHOWS THE MOST CHARACTERISTICS OR IS THE LONGEST VIEW– ONLY CHOSEN VIEW
TOP AND RIGHT-SIDE VIEWS ARE DRAWN BASED ON THE NORMAL POSITION TO THE FRONT VIEW

8. Number of views to draw
WHEN AN OBJECT HAS A UNIFORM THICKNESS ONLY ONE VIEW IS NEEDED
AN OBJECT CAN BE SHOWN IN TWO VIEWS WHEN THE THIRD VIEW WOULD ADD NOTHING TO THE DESCRIPTION
WHICH VIEWS ARE NEEDED FOR A?
FRONT AND SIDE
WHICH VIEWS ARE NEEDED FOR B?
WHICH VIEWS ARE NEEDED FOR C?
FRONT AND TOP
WHICH VIEWS ARE NEEDED FOR E?
FRONT AND ??
A and B: top and front view are the same (use side and front)
C and D: top views are necessary (use top and front)

9. Curved surfaces CYLINDERS AND CONES DO NOT SHOW CURVES IN ALL VIEWS
THEY APPEAR AS CIRCLES IN ONE VIEW AND STRAIGHT LINES IN ANOTHER
CYLINDER APPEARS AS A CIRCLE IN ONE VIEW AND A RECTANGLE IN ANOTHER
CONE APPEARS AS A CIRCLE IN ONE VIEW AND A TRIANGLE IN ANOTHER
ANY OBJECT WITH A SPHERE WILL HAVE CIRCLES IN ALL VIEWS

10. Hidden lines NARROW, SHORT DASHED LINES DRAWN WITH 0.5MM F PENCIL
1/8 DASH, 1/32 GAP
SHOWS THE OUTLINE OF A FEATURE THAT CAN NOT BE SEEN IN A PARTICULAR VIEW
WHAT DO YOU NOTICE ABOUT THE CENTER LINES IN THE FRONT AND TOP VIEWS THAT IS DIFFERENT THAN WHAT WE TYPICALLY DO WITH DRAWINGS?

11. DIMENSIONING
DIMENSIONING COMMUNICATES SHAPE AND SIZE IN A CLEAR AND ACCURATE FASHION
EACH FEATURE OF AN OBJECT IS ONLY DIMENSIONED ONCE
SHOULD BE PLACED IN THE MOST DESCRIPTIVE VIEW OF THE FEATURE BEING DIMENSIONED
(DO NOT DIMENSION HIDDEN LINES)

12. Multiview practice – Getting Started
1) DETERMINE FRONT VIEW
2) SKETCH OUT FRONT VIEW
3) PROJECT WIDTH AND LINES TO TOP VIEW
4) DETERMINE DEPTH FOR TOP VIEW
5) PROJECT HEIGHT AND LINES TO RIGHT SIDE VIEW
6) DRAW MITER LINE
7) PROJECT DEPTH TO MITER LINE
8) PROJECT DEPTH TO RIGHT SIDE VIEW
TOP
MITER LINE
FRONT
RIGHT

13. Multiview practice #1

14. Multiview practice #1 - answer

15. Multiview practice #2

16. Multiview practice #2 - answer

17. Multiview practice #3
HOW WOULD A HOLE BE INDICATED ON THE TOP AND RIGHT SIDE VIEWS THAT IS SHOWN IN THE FRONT VIEW AS A CIRCLE?
INCLUDE CENTER LINES

18. Multiview practice #3 - Answer
HOW WOULD A HOLE BE INDICATED ON THE TOP AND RIGHT SIDE VIEWS THAT IS SHOWN IN THE FRONT VIEW AS A CIRCLE?
INCLUDE HIDDEN LINES ON TWO VIEWS
INCLUDE CENTER LINES ON ALL VIEWS

19. Multiview practice #4

20. Multiview practice #4 - answer

21. Quiz
1) WHICH VIEWS ARE MOST OFTEN USED TO DESCRIBE AN OBJECT IN A TECHNICAL DRAWING, ALSO REFERRED TO AS THE NORMAL VIEWS?
A) FRONT, REAR AND RIGHT-SIDE
B) FRONT, TOP AND LEFT-SIDE
C) FRONT, TOP AND RIGHT-SIDE
D) 3D VIEW

22. Quiz 2) WHICH VIEW SHOWS THE WIDTH AND HEIGHT OF AN OBJECT? A) FRONT
B) LEFT
C) RIGHT
D) TOP

23. Quiz
3) THE VIEWS THAT MAKE UP MULTIVIEW DRAWINGS ARE DEVELOPED THROUGH _______________ PROJECTION?
A) ORTHOGRAPHIC
B) PHOTOGRAPHIC
C) PICTORIAL
D) TECHNICAL

24. QUIZ
CREATE A MULTIVIEW DRAWING OF THE SHAPE BELOW:

25. Level of understanding: 1, 2, 3
AT THE BOTTOM OF YOUR NOTES PAGE, ON THE BACK, CIRCLE WHETHER YOU BELIEVE YOU ARE A 1, 2 OR 3
1: I NEED HELP OR I AM STILL STRUGGLING TO UNDERSTAND
2: I GET IT/MOSTLY UNDERSTAND
3: I GET IT, LETS MOVE ON TO SOMETHING MORE CHALLENGING

26. Multiview Group activity
THERE WILL BE THREE DIFFERENT GROUPS:
STUDENTS WHO NEED ASSISTANCE (1)
STUDENTS WHO UNDERSTAND (2)
STUDENTS WHO ARE READY TO MOVE ON TO HARDER ASSIGNMENTS (3)
EACH GROUP WILL BE GIVEN A BOX FULL OF 3D SHAPES
GROUPS 2 AND 3: WILL BEGIN CREATING MULTIVIEW DRAWINGS BASED ON THOSE SHAPES IMMEDIATELY AFTER GETTING IN TO GROUPS
GROUP 1: I WILL MEET WITH YOU AND PROVIDE INSTRUCTION ON YOUR ACTIVITY. YOU WILL HAVE A REFERENCE SHEET AND COLOR CODING OF VIEWS ON SHAPES.
GROUP 3: AFTER MEETING WITH GROUP 1, I WILL COME AND SHOW YOU HOW TO CREATE ISOMETRIC DRAWINGS OF THE 3D SHAPES
GROUP 2: AFTER MEETING WITH GROUP 2, I WILL MAKE SURE YOU ARE GOOD WITH YOUR ACTIVITY AND SHAPES.

27. Technical sketches on grid paper example