Smaller buildings may be fitted to a timber beam or a steel channel which can be bolted to a suitable existing concrete slab, fixed by ground anchors or secured with ballast weights.
Larger buildings can be bolted to a purpose made concrete ring beam or fitted to a steel beam, which can be bolted to a suitable existing reinforced concrete slab.
For a more permanent solution, most buildings are secured to a concrete slab with ring beam, prepared by groundworks professionals. A concrete upstand can be either monolithic with foundation beams, or cast on top of an existing slab.
Rubb buildings can be erected on an uneven surface or a sloping area and will accept high differential settlement of the foundations.
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