With the new procedure for the permanent monitoring by the acousto-elastical stress measurement changes in the structures can be recognized in time into civil engineerings. The world-wide only on-line procedure permits the measurement of loads and stress situations directly in the building. With ultrasonic the stress in the building directly and in real time is seized. All changes can be transferred immediately on-line by Internet or radio. The sensors are brought either directly into the building or later attached to endangered places. Design features such as carriers or bridge bearings can be supervised particularly simply. The sensors are constantly at or active in the building. The simple structure and the small size permit comprehensive application at all buildings from steel or concrete. Into all engineering structures can be measured static loads and tensions and small dynamic changes. In the procedure many important civil engineerings could be supervised world-wide. The costs of such a monitoring are small. The collapse of buildings accompanies with a measurable change of the tensions and loads. These are correlated with the world-wide available stove data of seismic events and examined for plausibility. Thus also a monitoring of buildings of all kinds on damage is possible by disasters (earthquake, ground slips, mudslide etc.).