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### Framed Buildings - Poured concrete, steel skeleton - Fig. 22-9. Framed and unframed structures are affected differently during collapses. ### Unframed Buildings - Wood frame, brick and joist, heavy timber Structures that are built so that most of the weight rests on bearing walls are known as...

### Framed Buildings - Poured concrete, steel skeleton - Fig. 22-9. Framed and unframed structures are affected differently during collapses. ### Unframed Buildings - Wood frame, brick and joist, heavy timber Structures that are built so that most of the weight rests on bearing walls are known as unframed structures. The collapse of a bearing wall tends to cause extensive collapses as the floor's supports are taken out. In all types of structures, the failure of a vertical member, such as a column or a wall, is usually more.