The challenge
As part of the silo strengthening programme, cracks were found in the silo roof. They were attributed to repeated movement of the silos and to new equipment installed on the roof over the years.
The roof had to be strengthened without removing it, while the silos below were being reinforced.
Scope of works
- Inspection of the roof cracking and design of the repair
- Lifting of new steel beams into position by crane
- Placement perpendicular to the existing roof beams, bearing on both the old and the new (shotcrete) silo shell
- Fixing to the roof soffit with threaded rods and bolts
Outcome
The silo roof now has a new load path and can safely carry its equipment. This was one stage of the six silos stabilization described in our silo reinforcement case study.
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