He had the whole in place, was ready to close the box lid, when the entire structure collapsed.

In this position they lack most of their original strength and the structure may further collapse.

For an instant, he thought that the whole structure would collapse.

The current bridge was built in 1945 after the original structure collapsed.

This structure collapsed after a fire on July 15th, 2011.

In 1681, building of the current church began after previous structures collapsed.

If the trees are removed, the structures may also collapse.

These two structures collapsed, killing a total of at least 89 people.

Any minute now, Duncan knew, the entire structure would collapse upon them.

At any moment the whole structure might collapse on top of it.