Connect the model to the field
A calculation represents a defined installation condition. The contractor’s pulling plan and field preparation must address the conditions that can change the actual forces.
Before installation
- Verify that cable, conduit, route geometry and installation arrangements match the study.
- Confirm lubricant compatibility, temperature range, quantity and continuous application method.
- Coordinate approved pulling attachments, load sharing, rope, swivel, equipment and anchorage.
- Establish applicable equipment settings, monitoring and stop-and-review criteria.
- Resolve jamming, clearance, access and sequencing questions before the pull.
During the pull
Use appropriate calibrated recording equipment and an agreed monitoring plan. Unexpected resistance, changed geometry or an exceeded stop criterion requires review. Measured tension can support an evaluation of effective field friction only with the other relevant inputs documented.
When something changes
A revised cable group, coefficient of friction, route, bend radius, feed arrangement or pulling direction can require a rerun. Coordinate the change with the responsible engineering team before relying on the prior result.