2nd Post

·Definition of structure: A structure is a collection of elements arranged in an optimun way to support a body or an object.

·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