Installation manual

Community S-Series - Operation and Installation Manual - Page 53
It is also permissible to bridle from the front to rear hang points, using a separate bridle for
each enclosure. This may have to be done if the hang points in the building are oriented
left-to-right instead of upstage/downstage. However, setting the bridles for an
upstage/downstage hang, as shown above, provides the advantage of being able to adjust
the inclination of the array while it’s in the air. Setting the bridles for a left and right hang
introduces the issue of having to exactly match the length of the cables to avoid a lopsided
hang. Note that every enclosure has at least two live hang points attached to it.
WARNING: The angle of the bridles should be 30 degrees or less to stay within a
reasonable safety margin. Under no circumstances should the bridle angle ever
exceed 45 degrees, or failure to one or more rigging parts may occur. Lower
bridle angles put less stress on the rigging components and are always safer!
WARNING: Never reeve a Spanset, sling, wire rope or webbing through a shackle or hook
at the upper hang point. The legs of any bridle must always be separate parts, joined by a
shackle or a pairing ring. If a single part is reeved through a shackle or hook, there is
nothing to stop the load from becoming unbalanced and turning sideways in the air.
Moreover, the point on the sling where it contacts the metal shackle or hook will bear twice
as much load if it’s reeved, than if it’s a single part.
Rigging Four Enclosures
When four enclosures are flown, the two outermost front and two outermost rear
points must be used (four points total). The bridles may be run from the front to the rear
points, or they may be run from one outer rear point to the opposite outer rear point, and
the same for the outer front points. Bridling across the front points and the rear points,
which results in an upstage/downstage hang, provides the advantage of being able to
adjust the inclination of the array after it’s flown. Note that every enclosure has at least
two live hang points attached to it.
Figure 19: Rigging Four Enclosures with the VFKIT