germany-hamburg: structural shell work./ zero-emission office building - shell construction work./ hafencity hamburg gmbh is planning the construction of a new office building at the am dalmannkai site zero-emission office building with a total gross floor area of approx. 8600m². a shore power system for the cruise terminal hamburg cruise center hafencity will be installed in the eastern ment accommodated. the 1st - 5th floor is in timber construction with stiffening reinforced concrete cores (stairwells and elevator shafts) planned. the ground floor is d on a girder grid made of reinforced concrete beams and reinforced concrete columns, the ceilings are designed as cross laminated timber ceilings. the ment floors are for the sake of waterproofing of the building in reinforced concrete planned as wu construction. the building reinforcement is done via the reinforced concrete cores. the ceiling elements made of wooden beams (h=34cm) and ceiling panels (h=15cm) are shear-resistant in the edge area connected with each other. this ensures the disc effect of the wooden panel. the fire protection requirement r90 is guaranteed by means of a combustion certificate in accordance with ec5. the reinforced concrete girder grid of the ceiling above the ground floor serves to support the wooden supports from the upper floors. the projecting corner of the facade to "am dalmannkai" is supported by haunched reinforced concrete cantilevers intercepted. the ment is in reinforced concrete skeleton construction with reinforced concrete flat ceilings, columns and a stiffening core planned. the foundation is carried out using full displacement bored piles in order to take account of the subsoil in this area. below the two-storey shore power system is a district heating tunnel across the construction site. since the building cannot be founded here, the walls should be designed as wall-like girders that span the tunnel.