Suspending loads above people is common practice in the entertainment world and requires great precautions. In Europe, one voluntary Code of Practice guides the product specifications and installation requirements surrounding these applications: SQP2 Chain hoists (2010).
U.S. interest in this European Code of Practice is growing as this code is being adopted in U.S. entertainment installations. Our distributor, Atlanta Rigging has recently completed installations at Bankers’s Life Fieldhouse, in Indianapolis, Indiana (shown above) and at the Barclays Center in New York which include D8+ hoists and meet this voluntary European code.
European Code of Practice and the D8+ Code
The SQP2 defines the D8+ as “The D8 Plus Electric chain hoist is constructed and dimensioned in such a way that the moving of overhead loads is possible provided that no persons are standing under the load and that it is not necessary to install safety backups when the hoist is switched off.”
Once the load has been lifted, is in place and the hoist has been switched off, then it is acceptable to suspend the load above people without the secondary support. While the load is moving all personnel should be out from underneath the load.
How the D8+ Code can be attained
The D8+ “code” can be achieved by having a minimum of 10:1 design factor, double brakes and a clutch. The clutch can be used as protection against overloading when the hoists are used for statically determinate loads. A statically determinate load is defined in the SQP2 as a load on individual electric chain hoists (point load), distributed loads on two electric chain hoists, hinged, linked single span girders on more than two electric chain hoists, and distributed loads on three electric chain hoists.
Banker’s Life Fieldhouse Application – Indianapolis, Indiana
The Banker’s Life Fieldhouse installation shown utilizes twelve (12) Columbus McKinnon D8+ Model RR Chain Hoists with 123’ of lift. There are two (2) hoists used per speaker line array and a total of six (6) arrays.
The control system, provided by Motion Laboratories, consists of the following: 16‐Channel Controller with Soft Limit System, Touchscreen Handheld Remote and Remote E‐stops.
Learn more about the CM-ET Lodestar D8+ electric chain hoist and other entertainment motor and rigging equipment by attending one of our intensive training programs designed for specifically for the entertainment industry.