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Rigid inclusions for secondary school foundations
Replacement buildings were needed for a 750-place secondary school after the original buildings had come to the end of their lifecycle. Keller's scheme resulted in a significant carbon saving over a CFA solution. The new school comprised a two and three-storey main teaching block. The main challenge was to provide a solution through variable
Replacement buildings were needed for a 750-place secondary school after the original buildings had come to the end of their lifecycle. Keller's scheme resulted in a significant carbon saving over a CFA solution.
The new school comprised a two and three-storey main teaching block.
Challenge
The main challenge was to provide a solution through variable glacial soils to accommodate relatively high column loadings of 3500kN while facilitating the construction of shallow foundations and a ground-bearing slab.
Solution
Rigid inclusions were installed for the foundations to achieve a bearing capacity of 175kN/m2. Vibro stone columns were used to support the more lightly loaded floor slabs. This combination offered the client significant time and carbon savings over the original piled option (see graphic).
