IS : 11089 - 1984
(a)
                 (c)
             FIG. 1B   PRMSUREDIS~RIIWI-IONUNDER A RAFT
    h) The contact pressure distribution     is assumed    to   vary    linearly
       throughout the foundation.
   5.1.1 This method   may be used when either   of the following   con<litions
are satisfied:
    a)   The structure behaves    as rigid ( due to the combined       action of
         the superstructllre and the foundation ) with a relative       stillness