Transcript Isometric Circles - Technology in the Mearns

CDT
Department
Graphic Communication
Isometric Introduction
Isometric Views with Circles and Curves
Isometric Views are one of the forms of 3D views that you need
to know about in the Standard Grade Graphic Communication
course.
This type of drawing shows the length, breadth, and height of the
object being drawn.
An isometric is drawn with a corner closest to the viewer.
All vertical lines and all lines angled back at 30º can be measured
accurately. No other lines on Isometric views can be measured.
Isometric Views with Circles and Curves
If you are sitting an SQA Credit paper in Graphic Communication, you will
be required to know how to draw isometric views with curves.
This type of drawing is always included in the final paper each year.
The table on the following slide shows when each type of drawing was
used and how many marks were allocated to it.
You will need to know how to draw full and part circles and also sloping
edges and surfaces.
The ability to be able to answer questions about isometrics will be a great
help in letting you reach the pass mark in the Credit exam paper.
If you are sitting the General paper you will need to know how to draw
Isometric Views, although they will not normally include curves and
circles, but will include sloping edges and surfaces.
Isometric Views – Credit Paper
% of DA mark
available
YEAR
Subject
NUMBER OF FULL
CIRCLES
NUMBER OF PART
CIRCLES
TOTAL MARKS
FOR QUESTION
1991
Electronic Game
Salt Dish (sect)
0
0
4
0
15
12
21%
17%
1992
Disc Box
(exploded)
0
0
18
26%
1993
CD Player
1
1
18
26%
1994
Staple Gun
0
2
14
20%
1995
Torch
1
0
15
21%
1996
Putting Aid
0
1
18
26%
1997
CD Player
1
1
18
26%
1998
Label Machine
1
0
16
23%
1999
Slide Projector
1
0
18
26%
2000
Speakers
1
1
16
23%
2001
Bathroom scales
1
1
16
23%
2002
Coffee maker
1
1
16
23%
Isometric Views - General
YEAR
SUBJECT
EXPLODED
TOTAL MARKS FOR
QUESTION
% of DA mark
available
1991
Fireplace
Prism - Box (sketch)
Yes
No
12
8
17%
11%
1992
Bracket
No
10
14%
1993
Plant Pot Holder
Yes
16
22%
1996
Torch
Yes
15
21%
1997
Box
Yes
12
17%
1998
Plant Pot Stand
(exploded)
Yes
16
22%
Burglar Alarm
No
8
11%
1994
1995
1999
2000
2001
2002