CLAY = 65 mmFor isolated footing on SAND = 40 mmFor raft footing on clay = 65-100 mmFor raft footing on sand = 40-65 mm(ii) Permissible Differential settlement:For isolated footing on clay = 40 mmFor isolated footing on sand = 25 mm(iii) Permissible angular settlement:For high framed structure < 1/500To PREVENT all type of minor DAMAGE < 1/1000Note: For multi-storeyed buildings having isolated foundations on sand, the maximum permissible settlement is 60 mm [ For multistorey buildings having isolated foundations take the higher load as compare to single storey buildings having isolated foundations. So that deflection caused by multistorey building having isolated foundation higher than 40 mm (from the safer side)]