There are various reasons such as:
1) Its not possible because pile foundation are designed for
2) Particular life cycle and its specially depends on ground
conditions of soil
properties.
3) Pile foundation is one part of major foundation in
construction where life cycle
is required more with another reason are pile foundation is used
for which
type of structure its also important factor considering time of
design.
4) One another major factor is settlement of existing pile
foundation is in
specific limits or not.
Also so many reasons etc.
Thanks & Regards
HARSHAL.S.KHODE
Deputy Manager (QA/QC)