Appunto...
where B is the width of the raft foundation.
This last parameter was then applied as a spring constant by multiplying it with the
unit area under the raft foundation (the unit dimension became kN/m). A certified
Professional Engineer then approved the outcome of the raft foundation design for construction.
Without prejudice to blame others, it is obviously a mistake! Why it is so? For
B greater than 0.3 m, equation 1 clearly shows that the greater the value of B the smaller
the value of ks. While it is structurally correct that the wider the foundation the more
flexible the foundation is. It does not equally right for the foundation soil. The engineers
had missed the fact that the soil at that area was far from homogeneous.

Quello che ho prima detto spiegato comprensibilmente...

Ci vorrebeb un AP sulle nozioni base di FEM tipo Plaxis.