Grapples are designed to join trusses in the manner shown in Figure 1 below only. Any other configuration is untested and may be dangerous. Two (2) Grapples must be used at each junction when joining box truss. Do not use more than one pair of Grapples per junction.
Warning: Grapple must only be used with minimum Grade 8 imperial or Grade 10.9 metric. Bolts of lower grade – imperial or metric – are not up to specified engineering ratings and are NOT recommended. Use of lower grade bolts will create unsafe conditions.
