suspending truss from chains
Wed, 27 July 2005, 11:20 amWalter Plinge3 posts in thread
suspending truss from chains
Wed, 27 July 2005, 11:20 amTo eliminate seating blind spots for a wrap-around theatre audience,it is proposed to hang the front of our square lighting truss from four chains at stage front but leave the rear of the truss mounted on lighting trees (for mounting cloth backdrops).
Q1. Do I need to use rated lifting chain (very exy), or will over-the-counter maring-grade galvanised chain of adequate dia. suffice?
While the Shire-owned recreation centre is more than adequately engineered to hang additional load-bearing points, a half-hanging / half-hoisted lighting truss presents the following insurance dilemna...
* Everything hanging from the building is covered by the Shire's insurance policy.
* Everything hanging from the lighting truss when hoisted from four winch-up lighting trees is covered by the PA hire company's insurance policy.
Q2. Is there a precedent which reconciles this dilemna that will make negotiations with both the Shire and the Sound & Lighting hire company and their insurers happy to:
A. share liability
or
B. Determine acceptance of liability by one or the other?
Q1. Do I need to use rated lifting chain (very exy), or will over-the-counter maring-grade galvanised chain of adequate dia. suffice?
While the Shire-owned recreation centre is more than adequately engineered to hang additional load-bearing points, a half-hanging / half-hoisted lighting truss presents the following insurance dilemna...
* Everything hanging from the building is covered by the Shire's insurance policy.
* Everything hanging from the lighting truss when hoisted from four winch-up lighting trees is covered by the PA hire company's insurance policy.
Q2. Is there a precedent which reconciles this dilemna that will make negotiations with both the Shire and the Sound & Lighting hire company and their insurers happy to:
A. share liability
or
B. Determine acceptance of liability by one or the other?