·There are four types of structures:
·Mass structures: This ones are solid,heavy and very sturdy structures. Like walls, dams, etc.
·Frame structures: These structures are formed by columns and beams that act as supporting elements. An example is a structure of a building.
·Truss structures: These structures are composed of bars that form triangles. They are ligthweigth and sturdy
·Suspended structures: These are held in place by cables and suspenders attached to sturdy supports. Examples: Include suspension bridges, tents, marquees, etc.
Mass structure Frame structure
Truss structures Suspended structures
·Force: A force is an influence that can deform a body or change it movement, or produce motion in a body at rest.
·Stresses: Are the physical demands that a body or object must withstand when one or more external force are appplied to it
