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Step 3: Tendency of Movement
To identify the Tendency of Movement of the feet and the
head of the frame, consider:
• The unloaded state (standing the frame prior to the
application of the load)
• The planned movements of the load
• Foreseeable misuse and potential unplanned events
The following diagrams are a guide to identifying the Ten-
dency of Movement of the head and the feet of the frame.
Fig. 3a
The Equal Leg Tripod shown sup-
porting an AZTEK Pulley system. The
applied force in this example is the
resultant of the pulley system which
is between the load and the haul-
ing line (closer toward the load).
This mode of use is as a Direction-
al Frame.
Fig. 3b
When force is applied on the Equal Leg Tripod,
the feet will have a tendency of movement
outward, as indicated by the red arrows.
This movement is typically prevented by the
use of hobbles between the feet. Rock
Exotica recommends that each pair of
feet be individually hobbled to
obtain maximum security
TOP VIEW
18 – VORTEX USER MANUAL
®
E X P E R T
and stability.
U S E
O N L Y
APPLIED
FORCE
Fig. 3c
Care must be taken to ensure the haul line
is kept close to the load line. The frame
will have a tendency of movement in the
direction of the haul if the haul line is
extended out to the point where the
applied force (pulley system resul-
tant) approaches the hobble.
ARIZONA VORTEX
USER'S GUIDE
CONFIGURATION:
Tripod
MODE OF USE:
Directional Frame
TOP VIEW
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