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F.8.5 Impact Attenuator Attachment

F.8.5.1 The attachment of the Impact Attenuator to the Anti Intrusion Plate must be documented in the SES submission.

F.8.5.2 The accepted methods of attachment are:

a. Welding

 The welds may be continuous or interrupted.

 If interrupted, the weld/space ratio must be 1:1 or greater

 All weld lengths must be greater than 25 mm

b. Bolted joints

 Using no less than four 8 mm or 5/16” minimum diameter Critical Fasteners, T.8.2

 The distance between any two bolt centers must be 50 mm minimum.

 Foam IA must not be solely attached by the bolted method.

c. Structural adhesive

The adhesive must be appropriate for use with both substrate types. The adhesive choice, substrate preparation, and the equivalency of this bonded joint to the bolted joint in F.8.5.2.b above must be documented in the SES.

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