Electro-Voice EVF-1152D, EVF-2121S HRK Rigging Structural Ratings for Horizontal Clusters

6.0 Rigging-Strength Ratings and Safety Factors (cont’)

6.5 HRK Rigging Structural Ratings for Horizontal Clusters

The guidelines for simplified horizontal structural ratings cover the following information:

1.Maximum height of the cluster.

2.Maximum weight of the cluster.

3.Cluster combinations, per weight and height.

4.Using tie plates for suspension.

5.Suspension-line angles for HRK rigging.

6.Symmetry of cluster.

7.Inner connection points.

8.Left-to-right horizontal cluster angles.

Using the HRK horizontal rigging kits, any combination of EVF and EVH enclosures can be assembled in a cluster as long as the WLL, angles, and height limits are observed. For horizontal clusters, left-to-right symmetry must also be observed to keep even loads across suspension lines.

Suspend horizontal clusters using tie plates only, no eyebolts.

LIMITS FOR HORIZONTAL CLUSTERS ONLY

Maximum Working Load Limit	Maximum Height
Three-over-Three = 980 lb (445 kg)	Max. Two Enclosures High
Two-over-Two = 634 lb (288 kg)	or 5.25 ft (160.1 cm)

Table 13:

Maximum load and maximum height for horizontal clusters

Table 14 gives a brief guide to the cluster combinations possible within the WLL of the EVF and EVH enclosures.

LIMITS FOR HORIZONTAL CLUSTERS ONLY

Clustered Enclosures	Maximum Number	Minimum No. of	Tie Plate Angle
	of Enclosures	Suspension Lines	Restrictions
Three enclosures over	6	4	See Figure 32
three enclosures		(2 per side)
Two enclosures over	4	2	See Figure 32
two enclosures
Three enclosures across	3	4	See Figure 32
		(2 per side)
Two enclosures across	2	2	See Figure 32

Table 14:

Possible horizontal cluster combinations within the WLL of each enclosure

46 Electro-Voice EVF/EVH User Manual