Why Roman buildings made of cement were vulnerable to fire

Insula, where most of Rome’s common people lived

The lower first floor is made of stone or brick.

From the 2nd floor and above, the load

unit price

Because of the problem

Cement is used as a finishing material for plastering exterior walls.

The internal frame is all made of wood.

Although it appears resistant to fire,

In reality, it is said that when it caught fire, it turned into a huge lump of firewood.