One section would fall into disrepair before the rest of the line was completed.

An entire section of it simply fell to the ground.

A section of wall fell away and I charged in.

I want you to assume that this section of wall will fall.

Although a large section of ceiling had fallen, no one was injured.

There was a roar, and another section of timber fell away.

A large section fell, exposing the open sides of two cells.

At one point, a section of roofing fell upon it.

Prior to this time they have said only that a section of the building has fallen away.