The purpose of this standard is to describe the basic principles for tolerances and their testing. The tolerances established in this standard as well as in DIN 18203-1 to DIN 18203-3 describe the accuracy to be achieved within customary accurateness. They always apply if no other tolerances are agreed upon. The standard applies to the setting up of components as well as for the construction of buildings. The tolerances apply to the construction of buildings irrespective of building materials. Values for time- and load-dependent deformations are not dealt with in this standard and are to be considered separately