STRUCTURE
-A estructure is a collection of elements arranged in an optimum way to support a body or an object.
-Types of structures:
- Mass structures. These are solid, heavy and very sturdy structures. Examples include walls, dams,etc.
- Frame structures. These structures are formed by colums and beams that act as supporting elements. One example might be the structure os a building.
- Truss structures. These structures are composed of bars that form triangles. They are lightweight and sturdy. Examples include cranes, electricity pylons, etc.
- Suspended structures. These are held in place by cables and suspenders attached to sturdy supports. Examples include suspension bridges, tents, marquees, etc.
-Force is an influence that can deform a body or change its movement, or produce motion in a body at rest
-Stresses are phisical demands that a body or object must withstand when one or more external forces are applied to it-
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