This use case is used to order the AIM basic information for cleaning of glass surfaces, window frames and the shading in the area of the facade. 

In order that the cleaning service on glass facades, windows, window frames and the shading can be planned or tendered, the quantity data (e.g. glass surfaces to be cleaned) and the accessibility in particular are recorded for this purpose. 

When recording the quantity data, it should be noted that not only the layered surface of the window but also the glass surface to be cleaned (both sides of the window or glazed element) must be recorded. In order to take into account, the particularity of facades with two layers of glass (e.g. windows with upstream impact or weather panes). an optional "Glass facade layer_additional" is introduced, which is to be used only if a second facade layer to be cleaned with glass portion is present. To illustrate this connection, the following example is used:

In a high-rise building, a window layer is created with windows that can be opened for cleaning. For fall protection, there is another glass layer with impact panes. On one m2 window area of the first glass facade layer there are thus 2 m2 glass area. Another m2 of window layer of the baffle add another 2 m2 of glass surface to be cleaned, which makes a total of 4 m2 of glass surface to be cleaned on one m2 of facade surface.

Since the shading is partly carried out at the same time as the glass cleaning, the quantity and materialization of the shading is also recorded. and the materialization are also recorded.

The indication of whether the window can be opened for cleaning allows conclusions to be drawn as to whether technical means such as a facade access ramp are required for cleaning. Technical means such as a facade access system or a telescopic lifting platform are required for cleaning.

In order to record the costs of the cleaning service and to charge the respective tenant or user, the glass surfaces are the glass surfaces are recorded in relation to the adjacent room.