Electro-Voice XLC 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 XLC loudspeaker systems. It is intended to familiarize the reader with standard rigging hardware and techniques for suspending XLC loudspeaker systems overhead. Only persons with the knowledge of proper hardware and safe rigging techniques should attempt to suspend any sound systems overhead. Prior to suspending any Electro-Voice XLC loudspeaker systems overhead, it is essential that the user be familiar with the strength ratings, rigging techniques and special safety considerations 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 configurations. As such, the user is expressly responsible for the safety of all specific XLC loudspeaker 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 information concerning materials and practices, as commonly recognized in the United States, and is believed to be accurate at the time of the 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 Furthermore, the regulations and requirements governing rigging hardware and practices may be superseded by local regulations.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 regulations.

All specific material concerning the strength ratings, rigging techniques and safety considerations for the XLC 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 document and any manual update notices. All non-Electro-Voice associated hardware items necessary to rig a complete XLC loudspeaker array (grids, chain hoists, building or tower supports and miscellaneous mechanical components) are the responsibility of others.

Electro-Voice

July, 2002

ELECTRO-VOICE®￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿￿

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Contents ELECTRO-VOICE ELECTRO-VOICE Table of ContentsRigging-Safety Warning Introduction Weight 116 lb 52.6 kgXLC-118 Loudspeaker System XLC Rigging System Overview of the XLC Flying SystemXLC Enclosure Rigging Hardware Details Typical XLC Flying System XLC Rigging Hardware XLC-127 and XLC-127+ Rigging Dimensions Correct Incorrect Rigging an Array Using the XLC Front Dollies XLC Rigging and Flying TechniquesArray Considerations ELECTRO-VOICE ELECTRO-VOICE Flying XLC Systems with Front Dollies Step Dolly Clip Working-Load Limit and Safety Factor Definitions Simplified Structural-Rating Guidelines Structural Rating OverviewSimplified XLC Rigging-Rating Guidelines Complex Structural-Rating Analysis ELECTRO-VOICE MAX-∅ MAX+∅ XLC-127 and XLC-127+ Rear-Rigging-Point Structural Ratings XLC-118 Rear-Rigging-Point Structural Ratings Total Column Weight Working-Load Limit 2200 lb 998 kg Wind Loading Electro-Voice Structural-Analysis Procedures Electro-Voice XLC Loudspeaker Systems Rigging Inspection and PrecautionsELECTRO-VOICE References Rigging ReferencesMechanical Engineering References ELECTRO-VOICE ELECTRO-VOICE Telex Communications, Inc /2002 Part Number 38110-145 Rev a