In order for large structures to be less affected by earthquakes, statically appropriate gaps are left at certain points of the structures. These gaps are made so that the movements of two identical structures do not affect each other during ground movements and earthquakes. These gaps, called dilatations, should be insulated from the top layer of the structure to the foundation. The insulation material, which should hold both concrete sides, have strong adhesion and be flexible, should be applied in dilatations.