70 *University of Agricultural Science and Veterinary Medicine Bucharest Email: camelia_slave@yahoo.com !"#" ! " # $ $ % & ’( $% Under the forces of gravity of the building, because of changing soil moisture and the soil temperature and other causes of soil particle movement occurs. Because of building the soil tamp it down (without changing the structure of soil compaction), it swells, sit (down layers of soil in areas of bare rock) and moving in the horizontal direction (sliding). Corresponding displacements occur foundations of buildings and land parties. Movements can be building plan and elevation. Building movements in altitude is call subsidence, and plan trips. If you travel to different parts of the building are equal in size and direction, they are call uniformuniform otherwise. Irregular movements of the points lead in changing the shape and size of building, so in their deformation. Construction experience has shown that all buildings and construction are subject to movements and deformations. Construction there is absolutely displacement and deformable (Popescu, 2011). It was founded that could cause deformities and variable load, acting on, construction. For example, loads due to wind, solar radiation, vibration during operation of equipment, seismic force. After building character deformations can be divided into elastic and residual. If, after termination of loads over the initial construction, the deformations are elastic. Elastic deformations occur when the load does not exceed a limit value determined. If the action tasks exceed this limit, the size and shape do not return to its original construction. In this case, it is unbalanced sustainable construction. The construction elements cracks and disruption occur in some cases is possible injury or destruction of the building. In order to prevent accidents and more detailed study in the causes of poor quality of construction, carry out systematic observations on deformations and displacements construction. To achieve this goal in building structures and special facilities are placed devices to record movement’s mutual tensions and building points. In making these observations are useful method surveying, which enable the movement of points in general construction and structures in space &% The movement is changing the position of a subject point of construction applications. Deformation is changing relative distance of the points subject to construction applications. Measuring displacements and deformations can be character building relative or absolute. Corresponding measurements of the relative position is near or distance measure when two or more parts of the