
11
180
780
YY''m
m - 2
mm
XX'' -
2 m
m
XX
''
mm
-
2
mm
780
XX'' -
2 m
m
XX'
'mm
- 2
mm
780
Fig: 4
1.
1.
3.
3.
2.
2.
90 degrees corner
180
FIG.
11
YY'
' -
2 m
m
90 degrees corner
180
FIG.
11
YY'
' -
2 m
m
90 degrees corner
180
FIG.
11
YY
'
' -
2
m
m
180
780
YY''m
m - 2
mm
Fig: 4
YY” - 2 mm
XX” - 2 mm
18
18