Theatre Design & Technology - Summer 2003 - 22

Most counterweight rigging system
problems can be traced to three
contributing factors:
* Normal wear-and-tear
* Poor maintenance
* Operator error
Regularly scheduled safety inspections will help conscientious venue operators catch the effects of normal accumulated equipment and material wear before danger
results.
The sheer number of sheaves, lift lines, and hand lines in
even a modest system can be daunting, yet all these components may need replacement over time. Theatre work schedules often do not encourage routine maintenance, and
inspection experts relate many tales of venue operators who
conveniently assume counterweight rigging systems are
hassle-free. Jay Glerum sardonically comments how random
hardware items appearing beneath tension blocks are not
"gifts from the Bolt Fairy" and should be immediately identified and replaced. He notes this cavalier attitude toward loose
hardware is unfortunately all too commonly encountered during safety inspections. Although the need for diligence should

ad

seem obvious, many venue operators need motivation to find
the time for routine, documented in-house inspection and
maintenance.

IN-HOUSE INSPECTIONS
Glerum advises that many problems can be avoided when operators pay attention to the system every time it is in use, as
immediate investigation of unusual noises, vibrations or rough
operation may prevent later malfunctions or injuries. The
value of trained personnel looking over system components
during daily operation should never be underestimated, but an
annual in-house inspection by the most experienced rigging
professional on staff is also recommended. Annual in-house
inspections should include the following minimum steps for
every lineset:
* Inspect batten pipes for bending.
* Check the chains or alternate fastening between the batten
and the lift line termination.
* Check the wire rope termination hardware, paying special
attention to torque on any wire rope clips in use.
* Ensure any nuts and bolts used for rigging attachments are
adequately rated for the job.
* Examine each wire rope from the batten through the length
of travel to the arbor top.
* Inspect the wire rope termination and attachment hardware between the wire rope and the arbor itself.

ad

TD & T

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Table of Contents for the Digital Edition of Theatre Design & Technology - Summer 2003

Contents
Theatre Design & Technology - Summer 2003 - 1
Theatre Design & Technology - Summer 2003 - 2
Theatre Design & Technology - Summer 2003 - 3
Theatre Design & Technology - Summer 2003 - Contents
Theatre Design & Technology - Summer 2003 - 5
Theatre Design & Technology - Summer 2003 - 6
Theatre Design & Technology - Summer 2003 - 7
Theatre Design & Technology - Summer 2003 - 8
Theatre Design & Technology - Summer 2003 - 9
Theatre Design & Technology - Summer 2003 - 10
Theatre Design & Technology - Summer 2003 - 11
Theatre Design & Technology - Summer 2003 - 12
Theatre Design & Technology - Summer 2003 - 13
Theatre Design & Technology - Summer 2003 - 14
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Theatre Design & Technology - Summer 2003 - 16
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Theatre Design & Technology - Summer 2003 - 18
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Theatre Design & Technology - Summer 2003 - 20
Theatre Design & Technology - Summer 2003 - 21
Theatre Design & Technology - Summer 2003 - 22
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Theatre Design & Technology - Summer 2003 - 27
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Theatre Design & Technology - Summer 2003 - 31
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Theatre Design & Technology - Summer 2003 - 33
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Theatre Design & Technology - Summer 2003 - 36
Theatre Design & Technology - Summer 2003 - 37
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https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1967Feb
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Dec
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Oct
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966May
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1966Feb
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965Dec
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965Oct
https://www.nxtbook.com/nxtbooks/hickmanbrady/tdt_1965May
https://www.nxtbookmedia.com