  Let $\{\xi_i\}_{i \geq 1}$ be a sequence of i.i.d.\ positive random
variables. Starting from the usual square lattice replace each horizontal edge
that links a site in $i$-th vertical column to another in the $(i+1)$-th
vertical column by an edge having length $\xi_i$. Then declare independently
each edge $e$ in the resulting lattice open with probability $p_e=p^{|e|}$
where $p\in[0,1]$ and $|e|$ is the length of $e$. We relate the occurrence of
nontrivial phase transition for this model to moment properties of $\xi_1$.
More precisely, we prove that the model undergoes a nontrivial phase transition
when $\mathbb{E}(\xi_1^\eta)<\infty$, for some $\eta>1$ whereas, when
$\mathbb{E}(\xi_1^\eta)=\infty$ for some $\eta<1$, no phase transition occurs.
