Forces

Forces

1. -a push or pull that tends to cause an object to change its movement or shape.

   • External
     • Force that applied to an object by something else
       • Static Load
         • weight of a structure for example the weight of the bridge
       • Dynamic Load
         • moving or changing force acting on an object; For example downwards force of cars moving over the bridge
   • Internal
     • Force that one part of a surface exerts on other parts of a surface exerts on other parts within the same structure

2. Tension

   • is a force that acts to stretch and pull apart something

3. Compression

   • is a force that acts to squeeze an object or push parts within an object together

4. Torsion

   • a force that twist; especially one end of an object relative to the other

5. Shear

   • is a force that acts to push parts that are in contact with each other in opposite direction