90
A
B
C
E
F
D
E
A
A
fi
g. 6.20
fi
g. 6.21
fi
g. 6.22
fi
g. 6.23
D
E
C
D
6 - M
ਠਲਲ਼
ਠਭਣ
M
ਠਲਲ਼
T
ਨਤਲ
Mast Ties
Mast tie requirements according to plank confi guration
0-3 planks
4-5 planks
6-8 planks
g
MAST TIE REQUIREMENTS FOR PLANK CONFIGURATION
Ref
Component
0-3 PLANKS
4-5 PLANKS
6-8 PLANKS
A
36" (91,4 cm) mast tie assembly
3
3
3
B
60" (1,5 m) mast tie extension assembly
3
C
36" (91,4 cm) mast tie extension assembly
3
2
D
rigid dual clamps
3
9
9
E
wall tie brackets
3
3
3
F
swivel dual clamps
4
Note:
The quantity of rigid dual clamps required will vary according to the type of con
fi
guration.
WARNING - WIND SPEEDS
The
erection
and
dismantling
of a motorized unit setup (including the base, the
bridges, the masts, the mast ties and all the other components) must not be conducted
when wind speeds exceed
28 mph (45 km/h)
.
Freestanding installations
and
setups
equipped with weather protection
, when allowed, must not be used with wind
speeds exceeding
28 mph (45 km/h)
.
Weather protection
, when allowed,
must not
be used
when work is performed on an
open air structure
. A motorized unit setup
with
mast ties must not be operated
when wind speeds exceed
35 mph (56 km/h)
.
If wind speeds are expected to exceed
102 mph (164 km/h)
, the motorized unit must
be brought down to base level.
When a freestanding installation is not in use:
• The motorized unit must be brought down to base level
When a tied installation is not in use:
• It is mandatory to leave the platform between two tie levels
• All loads must be removed from the setup, except all counterweights applied on
the setup
