Friday, January 25, 2013
SCALE DRAWING
AIRIL AHMAD
SMK PERIMBUN
Friday, January 25, 2013
EXERCISE
Drawing
Friday, January 25, 2013
SCALE DRAWING
Scale = Length of a side of the drawing
Length of corresponding side of the object
Scale =
D
O
E
Object
DC= 4UNITS
D’C’= 2UNITS
D
D
Scale =
O
2
Scale =
4
1
Scale =
2
A
B
E’
C
Drawing
D’
A’
B’
C’
Object
DC= 4 units
D’C’= 2 units
D
Scale =
O
2
Scale =
4
Scale = 2 : 4
2 4
Scale = :
2 2
Scale =1: 2
DC=
B D’C’=
Object
A
3UNITS
6UNITS
Scale =
6:3
Scale =
2:1
Scale =
2:1
2 2
Scale = 1: 1/2
Drawing
B’
C
D
A’
D’
C’
Object
DC= 3 units
D’C’= 6 units
D
Scale =
O
6
Scale =
3
Scale = 6 : 3
6 3
Scale = :
6 6
31
Scale =1:
62
1
Scale =1:
2
Friday, January 25, 2013
EXERCISE
Scale
EXERCISE 1:Find the scale
12 cm
6 cm
Object
6 cm
3 cm
Drawing
EXERCISE 2:Find the scale
Drawing
Object
15 cm
5 cm
EXERCISE 3:Find the scale
Object
Drawing
16 cm
4 cm
EXERCISE 4:Find the scale
Drawing
Object
24 cm
3 cm
6 cm
2 cm
EXERCISE 5:Find the scale
Drawing
Object
EXERCISE 6:Find the scale
5 cm
Drawing
20 cm
Object
EXERCISE 7:Find the scale
Object
6 cm
Drawing
18 cm
Friday, January 25, 2013
MAPS AND PLANS
AIRIL BIN AHMAD
Friday, January 25, 2013
MAPS AND PLANS
1:10 000
Means
1cm on the map and 10 000cm on the ground
The ratio
1
is called the representative fraction (RF)
10 000
AIRIL BIN AHMAD