Telex ELECTRO-VOICE X-Line TM manual Xvbp Structural Ratings

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Xvbp Pull-Up Bar Structural-Strength Ratings:

The working-load structural-strength ratings for the Xvbp pull-up bar are shown in Figure 18. The structural ratings are independent of the angle of pull in the front-to-back direction; however, the Xvpb is only rated for use for side-to-side pull angles of a maximum of ±5°, as shown in Figure 18.

A pull-up assembly is only necessary when the front rigging chains (Xvsg, Xvsl and Xvsd) go slack because gravity will not permit the cabinets to hang with the required vertical angles. The pull-up assembly must only be pulled back until the front chains are taut. Additional pull-up force can result in excessive forces in the rigging, or can result in load shifts between the front and back cabinet rigging hardware, the grid, or the hoist motors used to suspend the array. It is the responsibility of the user to make sure that an excessive pull-up force has not been applied.

Working-Load Limit

2000 lb (907 kg)

±

MAX

±

±

MAX

MAX

Working-Load Limit

2000 lb (907 kg)

At Any Angle

Figure 18:

Xvbp

Structural Ratings

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Contents Line Rigging Manual Table of Contents Rigging-Safety Warning Introduction Line Rigging System Overview of the X-Line Flying SystemTypical X-Line Flying System Enclosure Rigging Hardware Details Xvls Loudspeaker System Xfil1 and Xfil2 Loudspeaker Systems Xfil1 & Xfil2 Front Rigging with Xvsd or Xvhp Straps Rear Rigging Hinge Details Rear Rigging Hardware Installation Details External Rigging Hardware DetailsELECTRO-VOICE Front Rigging Strap Details Front Rigging Hardware Installation Details ELECTRO-VOICE Xvbp Pull-Up Bar Details ATM Flyware X-Line Grid ATM X-Line Grid DetailsRS-1B Double-Stud Rigging Fitting Adjusting the Vertical Angles of the Enclosures Line Rigging and Flying TechniquesArray Considerations Enclosure Vertical Angle Adjustments Rectangular Box Xvls or Xsub to Trapezoidal Box XvltDeciding Whether to Use an Xvhg or Xvhl at the Grid Rigging an Array with Boxes Using X-Line Dollies Flying with Stacking Dollies Flying with Front Dollies Pull-Up Techniques Working-Load Limit and Safety Factor Definitions Structural Rating OverviewSimplified Structural-Rating Guidelines Simplified Rating Guidelines ELECTRO-VOICE Complex Structural-Rating Analysis MAX +∅ -∅ Working-Load Limit 750 lb 340 kg At Any Angle ELECTRO-VOICE Xvls, Xvlt & Xsub Overall Enclosure Structural Ratings Xfil1 & Xfil2 Overall Enclosure Structural RatingsXvbp Structural Ratings Xvbp Pull-Up Bar Structural-Strength RatingsRS-1B Structural-Strength Ratings Xvls, Xvlt & Xsub Front Rigging Point Structural Ratings Xfil1 & Xfil2 Front Rigging Point Structural RatingsElectro-Voice Structural-Analysis Procedures Wind LoadingRigging Inspection and Precautions Electro-Voice X-Line Loudspeaker SystemsELECTRO-VOICE References Rigging ReferencesMechanical Engineering References ELECTRO-VOICE Telex Communications, Inc /2002 Part Number 38110-158 Rev a