Power point for isometric drawing

1. ISOMETRIC
DRAWING

2. CONCEPT OF ISOMETRIC DRAWING
 3 dimensional drawing (width, height and depth)
 Showing 3 views (top, front and side)
 Base line 30° from the horizontal plane
A
F
E
G
D
C
B
OBJEK A
A
B
C
D
E
F
G
OBJEK A
OBJEK A

3. ISOMETRIC AXIS
 Normal axis
 Horizontal axis
 Reversed axis

4. CHRACTERISTICS OF ISOMETRIC DRAWING
 Isometric lines –
parallel to isometric
axis
 Non-isometric lines-
lines that not parallel
to isometric axis

5. CHRACTERISTICS OF ISOMETRIC DRAWING
 Angle in isometric  Circle in isometric
 Curve in
isometric

6. VIEWING DIRECTION

7. CONSTRUCTION OF ISOMETRIC DRAWINGS
ON NORMAL AXIS
 Box method – using the entire object
dimensions (height, depth, width)

8. CONSTRUCTION OF ISOMETRIC DRAWING
ON NORMAL AXIS
 Frame method- object which has vertices such
as pyramids and cones

9. CONTRUCTION OF ISOMETRIC CIRCLE
USING FOUR CENTRE METHOD
 Locate the center of an
ellipse
 Construct an isometric
square
 Construct a
perpendicular bisector
from each tangent point
 Locate the four centres
 Draw the arcs with these
centers and tangent to
isometric square

10. CONSTRUCTING CURVES IN ISOMETRIC
PLANE USING COORDINATE METHOD