Scaffolding work 4th - 5th construction phase, New Palace in Sanssouci Park, Renovation of the attic DA 02

As part of the Special Investment Program 2 from the Federal Government, the State of Berlin, and the State of Brandenburg, the renovation of the New Palace's roof is planned. This includes the repair of the roof structure, sandstone balustrades and main cornice, sculptures, and the renewal of the roof waterproofing and copper covering. Prior to the work, decontamination of the attics will take place. The repair of all attics is divided into 6 construction phases. The tendered scaffolding work relates to the construction phases of the northern Corps de Logis with the garden side, the central Corps de Logis (4th phase), and the Heinrich Wing (5th phase). The attic space is highly to very highly contaminated due to various highly toxic wood preservatives (PCP, DDT, Lindan). Prior to the scaffolding erection, the projecting base platform on which the New Palace rests must be bridged with steel beams and a preceding support structure as a base point and for the purpose of load transfer. Relevant building accesses must be bridged and made accessible with stair systems made of modular parts. The facade scaffolding (consisting of 3 scaffolding planes, executed as an empty scaffold up to the 8th scaffolding level) serves trades such as stone restorers for the restoration of the natural stone cornice and sculptures of the central Corps de Logis in situ (on-site) and carpenters and roofers for the renewal of the roof sheathing and new covering with copper sheet, as well as the repair of the roof structure, its superstructures such as the dormers of the servants' quarters, and the renewal of the rainwater gutter and lightning protection. For the dismantling of the sculptures of the northern Corps de Logis (NC) and the Heinrich Wing, which are to be restored in the shelter areas in front of the New Palace, the scaffolding area above the main cornice will be reconfigured so that the sculptures of the attic level (balustrade height) can be removed with a mobile crane. After the dismantling of the sculptures, the upper scaffolding area at attic height will be reconfigured to erect the support for the weather protection roof. Subsequently, the assembly of the weather protection roof will follow. Due to the pollutant load in the roof structures, an 8-fold air exchange must be created within the weather protection roof area using room air filtration systems. This area is considered a black zone. It is accessible via 2-chamber black-white personnel airlocks and 2-chamber black-white material airlocks. These airlocks are assigned to the material depositing platforms. Between the two opposing material depositing platforms, a trade bridge accessible by a loader is arranged to bridge the roof area. After completion of the roof waterproofing, the weather protection roof will be dismantled, the sculpture pedestals will be reconfigured, and the restored sculptures will be reassembled using a mobile crane. Scope of services - Work and assembly planning, structural analysis of scaffolding - Ground protection below the scaffolding erection area - Accesses at ground floor level, such as stair systems, bridging structures - Creation of base points/load transfer for facade scaffolding using steel beams and support structure - Facade scaffolding consisting of 3 construction planes up to the pilaster capital protection level (up to the 8th scaffolding level as an empty scaffold) - Working scaffold for dismantling and later assembly of sculptures (reconfiguration) - Cornice support, load transfer via scaffolding - Support structure as support for weather protection roof - Weather protection roof - Accesses to scaffolding, such as construction elevator, stair tower - Black-white partitions, such as personnel and material airlocks - Material platforms inside and outside the black zone - Crane runway for material transport from the attic - Trade bridge between material platforms for crossing roof areas - Room air filtration systems for air exchange in the pollutant-laden attic - Working scaffold and weather protection roof for sculpture processing in situ on the central Corps de Logis and tympanum processing on the garden side of the central Corps de Logis