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4.3. INTERMEDIATE PHASE
4.3.1. RIGGING THE CABLES
When the first four elements are flown, before con-
tinuing it could be necessary to add the following ac-
cessories:
1. a spanset for rigging the cables (with a shackle
or simply knotting it to the frame) (figure 33);
2. a security rope attached with a shackle, keep
ing some distance from the hoist coupling
shackle (figura 33);
3. if used, an inclinometer to be applied to the
front part of the frame, centered respect to the
array’s axis and fixed steadily;
figure 32
figure 34
figure 33
After having attached the spanset as described
above, depending on the quantity of the line array ele-
ments, arrange the cables as follows:
1. pass the first cable through the spanset knot
and plug it into the first element (figure 34);
2. plug the three link cables;
3. prepare the other cables to pass them through
the spanset at the length approximately equal
to the distance from the fifth (and ninth) ele-
ment
4. pass through the spanset the remaining cables
of the chain hoist(s), inclinometer and others
5. moderately tighten the knot of the spanset to
keep everything in place
Attention: it is advisable to leave the right length
of the cables to prevent them from being tightened
excessively.
In case only one chain hoist is used, the cables
influence the array’s inclination depending on their
overall weight (and consequently on their height from
the ground). It is advisable to consider these variables
and compensate them, if possible.