Planning and execution of test axis

Planning and execution of test axis

The described services for the planning and execution of the test axis are part of the repair work on the medieval city wall of the town of Blankenberg.

The best possible preservation of the existing building fabric must be taken into account, insofar as this is possible and economically justifiable according to the current state of restoration technology. The coordinated restructuring concept forms the basis for planning the test axis. The test axis is closely monitored by the responsible monument protection authorities; a permit is available in accordance with Section 9 of the Monument Protection Act NW. When carrying out the test axis, the Protection and Care Act

of the monuments in the state of North Rhine-Westphalia (DschG) in the currently valid version. The planned renovation work requires the greatest expertise and care in carrying out the work. Due to the historical significance of the building and the status of a registered building and soil monument, all work must be carried out with the greatest possible care and must be carried out exclusively by qualified specialists.

Some achievements are exclusively available through trained diploma

to perform restorers in the field of wall painting and stone preservation or restorers in the stonemasonry trade. This is to be included in the individual items.

It is strongly recommended that you familiarize yourself in detail with the local situation through a site inspection and with the currently valid repair concept before filling out the service specifications.

Scientific analyses, material development and building material testing

To carry out the repair work on the test axis, repair materials adapted to the structure and function of components are required, which are predominantly not available as factory dry mortar. The

The required repair materials must therefore essentially be newly developed and their suitability verified by selected building material tests. The materials to be developed must comply with the Venice Charter and

are primarily to be planned and developed as lime-bound materials. It is imperative to avoid the use of binders or building materials which entail an additional introduction of readily soluble salts which are harmful to building. The use of Portland cements, Rhenish trass, dolomite lime or

Dolomite cement, etc., is not permitted. The recipes are to be developed in such a way that they can be used on site as building site mixes

are easy to manufacture and handle.

The wall crown of the test axis is to be designed as a draining and “green” wall crown. For this purpose, in addition to a draining single-grain mortar, a barrier mortar system

to be developed. The tightness will not be achieved through the addition of modern sealants, but via the grain structure and processing. Corresponding searches must be included in the unit prices. In the final report, the processing of the developed materials as well as the type and

explain in detail how it works for later repairs.

All services are to be calculated, including all necessary ancillary services, such as materials, building materials, travel costs, delivery, disposal, communication, etc.