universal foundation is pile foundation.
it is used at all location, so we call it universal foundation in simple way
basically pile foundation use at
- where bearing capacity of soil is low
- where chances of differential settlement of foundation
- where structural load is very high like bridge or skyskiper building
- where black cotton soil is present
- where bearing strata depth is very high
- where structure need to resist excessive vibration (wind mill)
- pile foundation we can use every where.