Mass structures: These structures are solid, heavy and very sturdy. For example walls, dam, etc
Truss structure: The structures are composed of bars that form triangles, lightweight and sturdy. For example cranes, electricity pylons, etc.
Frame stucture: These structure are formed by columns and beams that act as supporting elements. Examples are buildings, etc
Suspended structure: These structure are held in place by cables and suspenders attached to sturdy supports. Examples are bridges, tents, etc.
A force is an influence that can deform a body or change its 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 forces are applied to it.
