Structural safety is very near to our perception of personal safety concept and that has to do with the structures that surround us. Usually being inside our home or some entertainment event felt safe and most often do not think about the physical characteristics of the structure in which we live , but our state of comfort may change when , because of external forces we perceive a sudden change in the balance of the structure. The structures must withstand evenly forces produced by its own weight and extraordinary events such as earthquakes, hurricanes, rain, wind and even fire to maintain an adequate level of structural safety and the protection of life and property of the users. To accomplish this, the buildings must be designed and constructed so that its design strength is consistent with the purpose for which they are intended and during its lifetime should be given maintenance in accordance with the safety requirements in the building regulations in force.