How is the poem "The Waste Land" structured?

Generally the poem is free verse. There are plenty of rhymes but they don't tend to fall into rigid line patterns. It is structured in five sections of varying lengths, which suggest a general passage towards aridity by exploring the ways we disguise the emptiness of our world, but which do not boast a narrative connection. The cohesion is due mainly to its consistently foreboding tone. Stanzas are of various lengths, even within one section.