STRUCTURES AND FORCES

STRUCTURES AND FORCES

1. A structure is the set of elements in a body that are made to resist the effects of forces that act on it

   • There are two tipes of structures::
     • NATURAL STRUCTURES
       • They aren't made by man, they are natural.
         • For example the shell of a crab
     • MAN_MADE STRUCTURES
       • Are made by people to satisfy a need
         • For example the legs of a table

2. FORCES AND LOADS

   • A force is anything thatcan deform a body.
     • There are two tipes of forces
       • Permanent loads
         • They don't varey over time
           • For example the structure of a bridge
       • Variable loads
         • They vary over the time
           • For example the trafic going across a bridge

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