2.5 Safety
Factor
The W8L suspension system will only perform as designed when all four
connection points are utilised. However, the W8L 7:1 safety factor is based
on a worst-case scenario, where only two suspension points are supporting
the enclosures below them. This could occur in tilted arrays where the load
is shifted forward or back. The 7:1 safety factor will be maintained for up to
a maximum of 16 boxes in the array, within certain limits of tilt. The W8L
suspension spreadsheet program can be used to determine the limit of tilt
for various array configurations.
2.6
Safety Wires
Although the flying system is conservatively load rated, for maximum safety,
an additional secondary rigging point should always be provided and used.
Suspension points on the suspension frame that are not being used (side to
side points NOT diagonal) for the chain motors may be used to attach
safety bridles to a suitable, secure overhead rigging point, structurally
independent of the main hanging point for the system. It is recommended
that the safety bridles remain permanently attached to the frame as a
reminder that they must be used.
Note! The practice of crossing one safety bridle to an adjacent load hoist is
not recommended, in the event of a motor or system failure this would
cause a violent rotating action that would induce shock loads in directions
the system is not designed to cope with.
Martin Audio – W8L Flying System
E
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