Rigging Manual

5 MANCHESTER SERIES Rigging Manual
1.7 Secondary Safeties
All loudspeakers own in theatres, studios or other places of work and entertainment shall, in addition to the principle load bearing means of suspension, be provided
with an independent, properly rated, and securely attached secondary safety. Only steel wire ropes or steel chains of an approved construction and load rating shall be
used as secondary safeties. Plastic-covered steel wire ropes are not permitted for use as secondary safeties.
The secondary safety suspension must be independent of the primary suspension points and capable of carrying the total system weight. The additional safety device
must be mounted in a way that the array is caught by the safety device without any drop and swing in the event that the primary suspension fails.
1.8 Wind Loads
The loudspeakers must not be suspended or ground stacked in winds greater than:
Beaufort Scale 6 bft (39-49 km/h, 25-31 mph, 22-27 knots)
If the forecast or actual winds reach:
Beaufort Scale 8 bft (62-74 km/h, 39-46 mph, 34-40 knots)
1) Clear the area of personnel
2) Lower and secure the array
1.9 Operational Safety
The procedures require the use of two or more authorised persons.
Produce a lift plan: before any lift takes place, you must formulate a lift plan that describes the exact steps and procedures that will be carried out.
The plan must be shared with all assistants and stake-holders in the lift so that each person will understand their responsibilities.
Observe all instructions given on the respective instruction labels of the rigging components and loudspeakers.
When using chain hoists make sure nobody is directly underneath or in the vicinity of the array.
During assembly pay attention to the possible risk of crushing.
Wear suitable protective clothing.
Safety Logo Description Safety Logo Description Safety Logo Description
Protective Headwear
shall be worn
Protective Eyewear
shall be worn
Protective Gloves
shall be worn
Protective Footwear
shall be worn
Practice Safe Lifting
1.10 Safety Notices in this manual
! WARNING
This indicates advice that if not followed, may lead to permanent injury or death.
! CAUTION
This indicates advice that if not followed, may lead to damage to the equipment.
NOTE
This indicates extra advice that may be useful when performing the procedures.