Hi All,   I'm trying to model the behaviour of pile-raft (250mm thk. slab and 300mm dia. piles) supporting a 1-storey building with the piles modelled as spring support. The software I'm using is ROBOT structural analysis.    After running the analysis, as you would expect, the support at the centre where the loads are at its highest gives a larger reaction than the ones on the edge. Once I reduce the spring constant value, the reactions still exhibits a similar behaviour, howeve