At the outset, it should be noted, that it is difficult to specify technical recommendations for the conservation of monuments of construction and architecture with a brick structure, because conservation sciences are subject to continuous development, whereas the criteria in this respect largely depend on new scientific developments in the field of art and technology, new od-. feel artistic and new practical experiences. However, you can see, that in contemporaries, conservation projects strive to make extensive use of the possibilities and technical achievements, primarily to maintain the existence of the monument. Thus, taking into account the most important views previously cited., theories and concepts, can be found, that over the course of more than a century, the following basic principles apply:

A. Conservation should be based on scientific grounds and take into account artistic reasons in close connection with historical facts.
B. In the process of conservation of thoughts, artistic forms and material substance, what past generations have liked, should be preserved in the monument.
C. In terms of technical interference, the main aim should be to fix and strengthen the object or its load-bearing links without violating the documentary values.; it is necessary to take advantage of the current state of knowledge in the world and the experience of domestic construction crafts of the past.

The principles given above in general outlines should be supplemented with further statements and postulates resulting from previous considerations.:
1. The monument is a document, and at the same time a work of art with equivalent elements of all stylish periods.
2. Prior to the commencement of conservation works, thorough scientific research and research into the history of the building should be carried out.
3. The research process should be carried out individually for each monument and, in addition to scientific and historical data, should include an inventory of architectural forms, construction technique and materials used.
4. The documentary value of the monument, apart from its historical and artistic values, also lies in the authenticity of the materials used in its construction., the construction systems used, as well as performance techniques appropriate for a given historical period. Hence, the cardinal principle of conservation should be to preserve, next to the artistic heritage, also these values or to transmit them in a possibly undiminished state..
5. When preserving the substance of historic masonry systems, first of all, preventive measures should be taken into account, technically similar to those used in the past, and only when these,fail or when their use is impossible for legitimate reasons, you can reach for the means and methods of modern technology. In this case, the methods of fixing masonry structures should result from logical structural premises, technological rights of materials and functional purpose of the system or system, whereas the principle of the use of a minimum of visible foreign agents should apply.
6. All technical conservation works related to the completion of the missing load-bearing links of the system, necessary due to the need to restore the static and load-bearing capacity of endangered batches or dictated by safety reasons, or resulting from historical reasons, cannot be made on the basis of abstract or hypothetical arrangements, but on the basis of scientifically established structural systems of a given historical period.
If you need to introduce new elements, should be, their number should be kept to a minimum, these elements should be maintained in a neutral character agreed only with the general structural scheme of the building.
7. After conservation, the object should reflect its historical and artistic value to the greatest extent, as well as testify to the art of construction and technical culture of a given era.
The above recommendations are a logical consequence of the principle, that for the history of art, technique and culture The value of historic brick buildings lies not only in their stylish shape, but also in the characteristics characterizing the technique of a given historical epoch, and this is visible in the structure of the structural organism in the form of the materials used, structural forming technology and static concept.