Inner courtyard renovation Kraelerstraße History of a wall renovation
The building is renovated - The courtyard is completely dilapidated (01 - März 2002 )
The inventory makes it clear that not only from an aesthetic point of view does the inner courtyard not offer any quality of stay. Also, the wall, which protects the second part of the inner courtyard, which is up to 4 meters higher, poses a major problem: A complete renovation is out of the question for reasons of cost, and one does not want to touch the terrain behind it under any circumstances. Although the wall is stable, it is crumbling in many places and looks extremely ugly. Mortaring and repainting would only be very short-term solutions.
Bestand Mauer © 2001 stk Kalckhoff
Bestand Mauer - Treppe - Geländer - Geräteunterstand © 2001 stk Kalckhoff
Bestand Mauer - Treppe - Geländer © 2001 stk Kalckhoff
Bestand Mauer - Treppe - Geländer © 2001 stk Kalckhoff
Minimum renovation of the wall (02 - September 2002 )
Niches and cavities that are no longer needed are bricked up, extremely dilapidated areas are concreted out. The old wall will be given a new wall crown: this will prevent water from penetrating from above and create a level finish for the future upper edge of the terrain and the new railing on the upper level.
Mindestsanierung der Mauern, Zumauern von alten Nischen und Aussparungen © 2002 stk Kalckhoff
Mindestsanierung der Mauern, Aufbetonierung der neuen Mauerkrone © 2002 stk Kalckhoff
Mindestsanierung der Mauern, Entfernen akuter Bruchstellen, Vorbereitung für neue Mauerkrone © 2002 stk Kalckhoff
The metal construction begins with the facing (03 - Oktober 2002 )
The planning idea for the renovation comes from gabion construction: a bar grid is hung in front of the old wall and then filled with crushed stone. The lattice protruding from the top is then bent over to form the new wall crown.
Setzen der Stahlstützen © 2002 stk Kalckhoff
Setzen der Stahlstützen © 2002 stk Kalckhoff
Setzen der Stahlstützen © 2002 stk Kalckhoff
Montage des Stabgitters © 2002 stk Kalckhoff
Montage des Stabgitters © 2002 stk Kalckhoff
Backfilling with two-coloured gravel (04 - Oktober 2002 )
Two-coloured gravel (sand-coloured Jurassic limestone and anthracite-coloured basalt) is filled in layers between the existing wall and the curtain grid and compacted to ensure settlement. While the terrain in the courtyard falls sharply, the colour separation of the two gravel materials is planned in the balance.
Schotterfüllung © 2002 stk Kalckhoff
Schotterfüllung © 2002 stk Kalckhoff
Schotterfüllung © 2002 stk Kalckhoff
Stairs and railings (05 - November 2002 )
New concrete block steps are mortared onto the old steps. To the right and left, the old wall is clad with custom-made Corten steel walls. Steel swords are mounted on the new wall crown, and after completion of the top ballast basket, the new railing is installed.
Treppe © 2002 stk Kalckhoff
Treppe © 2002 stk Kalckhoff
Geländer © 2002 stk Kalckhoff
Geländer © 2002 stk Kalckhoff
Treppenaufgang mit Cortenstahl-Wange © 2003 stk Kalckhoff
The wall renovation is completed (06 - Dezember 2002/April )
With the installation of the stainless steel handrail and the lighting, the wall renovation is completed. The other landscaping measures will be carried out in 2003.
Treppenaufgang © 2003 stk Kalckhoff
Cortenstahl-Wand mit Handlauf aus Edelstahl © 2003 stk Kalckhoff
Höchste Stufenanlage - Unterstellmöglichkeiten in den Mauernischen © 2003 stk Kalckhoff
- The building is renovated - The courtyard is completely dilapidated (01 - März 2002)
- Minimum renovation of the wall (02 - September 2002)
- The metal construction begins with the facing (03 - Oktober 2002)
- Backfilling with two-coloured gravel (04 - Oktober 2002)
- Stairs and railings (05 - November 2002)
- The wall renovation is completed (06 - Dezember 2002/April )
