In construction, is the name given to the set of elements, United, assembled or connected together, They are having the function of receiving loads, support these efforts and transmit loads to the ground, thus ensuring the static function – resistant construction. It is called loads all those factors and causes that affect the building of deformation. These causes are called actions. The building structure also supports loads of the building, its own weight and other conditions that alter their initial load.
Loads in the building are changing throughout the day, of the year and time in general. A building must tolerate changes in its distribution, in coatings and can also, that at some point change the use. Other actions that affect the building are environmental in nature and climate, such as wind, snow and even earthquakes or settlement movements of the ground.