Garmin EVA-2082S/906, EVA-2082S/126, EVA-2082S/920 user manual Rigging-Safety Warning

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Rigging-Safety Warning

This document details general rigging practices appropriate to the entertainment industry, as they would apply to the rigging of Electro-Voice EVA loudspeaker systems. It is intended to familiarize the reader with standard rigging hardware and techniques for suspending EVA loudspeaker systems overhead. Only per- sons with the knowledge of proper hardware and safe rigging techniques should attempt to suspend any sound systems overhead. Prior to suspending any Electro-Voice EVA loudspeaker systems overhead, it is essential that the user be familiar with the strength ratings, rigging techniques and special safety consid- erations outlined in this manual. The rigging techniques and practices recommended in this manual are, of necessity, in general terms to accommodate the many variations in loudspeaker arrays and rigging con- figurations. As such, the user is expressly responsible for the safety of all specific EVA loud- speaker array designs and rigging configurations as implemented in practice.

All the general rigging material contained in this manual is based on the best available engineering infor- mation concerning materials and practices, as commonly recognized in the United States, and is believed to be accurate at the time of original printing. As such, the information may not be directly applicable in other countries. Furthermore, the regulations and requirements governing rigging hardware and practices may be superseded by local regulations. It is the responsibility of the user to ensure that any Electro-Voice loudspeaker system is suspended overhead in accordance with all current federal, state and local regula- tions.

All specific material concerning the strength ratings, rigging techniques and safety considerations for the EVA loudspeaker systems is based on the best available engineering information concerning the use and limitations of the products. Electro-Voice continually engages in testing, research and development of its loudspeaker products. As a result, the specifications are subject to change without notice. It is the responsibility of the user to ensure that any Electro-Voice loudspeaker system is suspended overhead in accordance with the strength ratings, rigging techniques and safety considerations given in this docu- ment and any manual update notices. All non-Electro-Voice associated hardware items necessary to rig a complete EVA loudspeaker array (chain hoists, building or tower supports and miscellaneous mechanical components) are the responsibility of others.

Electro-Voice

December 2008

Electro-Voice® EVA Series User Manual

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Contents EVA-2082S/906 EVA-2082S/920 EVA-2082S/126 EVA-2082S/1220 Table of Contents Rigging-Safety Warning Introduction For proper grid selection Introduction cont’EVA-2082S/906 or EVA-2082S/126 dimensioned views Typical Number of Arrays Tool ListDesigning an EVA Array Applications for Which EVA Arrays Are Most AppropriateDesigning an EVA Array cont’ Designing an EVA Array cont’ Designing an EVA Array cont’ Evadatm Picture tab Evadatm Report tab, with many physical array details Designing an EVA Array cont’ Designing an EVA Array cont’ Five-Module Array Example An Eight-Module Example Preparing EVA Modules for Installation Recommended Preflight ProceduresModule Configuration Preparing EVA Modules for Installation cont’ Preparing EVA Modules for Installation cont’ Overview of the EVA Flying System EVA Rigging SystemEVA Rigging System cont’ Extended Grid with or without Second Spreader Bar Use of Two Standard Grids Assembling and Flying an EVA Array Working-Load Limit and Safety Factor Definitions Rigging-Strength Ratings and Safety FactorsStructural Rating Overview Rigging-Strength Ratings and Safety Factors cont’Simplified Structural-Rating Guidelines Rigging-Strength Ratings and Safety Factors cont’ Rigging-Strength Ratings and Safety Factors cont’ Electro-Voice Structural-Analysis Procedures Rigging Inspections and Precautions References Rigging printedMechanical Engineering printed Rigging Web sites References cont’Page Page Electro-Voice