The challenge
The partial collapse of a cement mill roof put people and equipment at immediate risk, and the remaining structure could fail further at any moment.
The first task was to understand what was still holding the roof up, then remove the collapsed steel without disturbing that fragile equilibrium.
Scope of works
- Drone survey and structural inspection of the collapsed and remaining sections
- Bracing of the main girder truss with a 250 t mobile crane, plus scaffolding to support other trusses and protect the mill
- Technicians in a man-basket attaching loose sections, lifted away by a second crane under a rigger
- Cutting of large sections and continuous clearing of debris
Outcome
The collapsed structure was removed safely with no secondary collapse. The investigation traced the cause to cement dust build-up on the roof and earlier modifications to the trusses. Read the full cement mill roof demolition case study and learn about our emergency deconstruction services.
Photo record
