Critical Girder Installation Over Live Infrastructure

Project Summary

Project Overview

This month’s featured lift highlights a complex girder installation carried out over critical infrastructure, where precision, sequencing, and engineered planning were essential to success.

Operating within a live project environment, the lift required strict coordination, controlled load placement, and compliance with a detailed lift plan to ensure safety and structural accuracy at every stage.

Unlike conventional lifts, this operation demanded a fully engineered approach, where execution followed a defined sequence, not just crane capacity.

Challenges

Challenge: Lifting Over Critical Infrastructure

The lift was performed over active infrastructure, where any deviation in load control or positioning could impact surrounding assets and project integrity.

Solution:

• A fully engineered lift plan was developed, incorporating detailed load cases, sequencing, and hold points to control every stage of the lift.
• Strict exclusion zones and controlled crane movements ensured no interference with surrounding infrastructure.
• All operations were executed in line with approved lift procedures and engineering sign-off.

Challenge: Precision Placement & Structural Tolerances

Each girder required placement within tight tolerances, with survey verification needed before final release.

Solution:

• Surveyors verified alignment against design before load release, ensuring installation accuracy.
• Controlled lowering procedures were implemented, maintaining partial load on the crane until final positioning was confirmed.
• Temporary works and structural supports were installed in sequence to maintain stability throughout the process.

Challenge: Complex Lift Sequencing

The installation required multiple girders to be lifted in a defined order, with each lift dependent on the previous placement.

Solution:

• A structured lift sequence was developed and followed to ensure safe progression of works.
• Coordination between crane crew, engineers, and site teams ensured seamless execution.
• Hold points were implemented to verify safety and accuracy before proceeding to the next stage.

CONCLUSION

Engineering Excellence at Its Best

This lift demonstrates that success in heavy infrastructure projects is driven by engineering discipline as much as crane capability.

Through detailed lift studies, controlled execution, and collaboration between all stakeholders, Premier delivered a safe, precise, and repeatable installation process even in a high-risk environment.

It’s another example of how complex lifts are solved not just with equipment, but with planning, process, and experience.

Ready to Elevate Your Next Project?

Critical lifts demand more than capacity, they require clarity, control, and engineered execution from start to finish.

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