We consider the model of i.i.d. first passage percolation on Zd :
we associate with each edge e of the graph a passage time t(e) taking
values in [0,+∞], such that P[t(e)pc(d).
Equivalently, we consider a standard (finite) i.i.d. first passage percolation
model on a super-critical Bernoulli percolation performed independently. We
prove a weak shape theorem without any moment assumption. We also prove that
the corresponding time constant is positive if and only if
P[t(e)=0]<pc(d).Comment: 35 pages, 4 figures; minor changes between v1 and v2, some references
have been adde