A structure is a group of elements somehow united to support a load with
stability. Examples of structures are bridges, electricity pylons or dams. Can
you think of others?.

Well, you'll probably think of tall buildings or long bridges, but there are also other examples such as chairs or tables that we use every day. Even an egg
has a structure.

In the image on the right, there`s a modem skyscraper with two main structures:
a) A skeleton, or frame, made of steel.
b) The “skin of the skyscraper " is the walls that are made of glass panels and thin concrete sheets.

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STRUCTURES

All structures must be capable of withstanding the loads and forces for which they are designed. This does not however mean that they must always be rigid; some structures are designed to be flexible. Flexible structures are often more able to withstand dynamic forces. These are forces that change direction and quickly become more intense. Buildings, such as those built in earthquake regions of the world, must be made flexible.