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Apprentice Q&A · #122

What's the proper way to swage a Gripple or cable lock for a seismic sway brace?

3rd YearSealing & InsulationRED · Stop / Verify

Thread the raw steel aircraft cable through the directional arrow path of the seismic lock block. Loop the cable tightly around your structural bracket attachment point, then feed it back through the secondary locking channel track of the block.

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Plain-English answer

Thread the raw steel aircraft cable through the directional arrow path of the seismic lock block. Loop the cable tightly around your structural bracket attachment point, then feed it back through the secondary locking channel track of the block.

Use a calibrated mechanical swaging crimp tool to clamp down on the internal locking wedges or sleeves until they physically lock onto the cable core. Leave a minimum 3-inch tail wire sticking out past the block exit.

Field checklist

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Hey boss, I’m on sealing & insulation and need verification before I touch this: What's the proper way to swage a Gripple or cable lock for a seismic sway brace? Do you want me to stop here and check the approved detail, submittal, or inspector/manufacturer requirement first?

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Verify before acting

Use this as training guidance. The foreman, approved drawings, project specs, manufacturer installation instructions, employer safety policy, and AHJ/code requirements always control the final answer.

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