C3-V3.1: C³ technology demonstration house – CUBE
Table of contents
Project data
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Report in the annual report 201
C³ TECH DEMO HOUSE CUBE – BUILDING PERMIT SUBMITTED!
Blick aus dem Gebäudeinneren auf die Fertigteil-BOX
Based on the architectural design of the CUBE building, which was completed last year, the further design of the carbon reinforced concrete house including structural calculations and geometric adjustments was carried out in the first half of 2019. With the wings projecting to the side, the building now has a total length of approx. 40 m, a width of 7.2 m and a maximum height of approx. 6.9 m. In order for the CUBE to be well-positioned and visible on the corner of Einsteinstrasse/Zellescher Weg in Dresden, the owner of the building, the state-owned company of Saxon Real Estate and Construction Management, has agreed to provide not only a part but the entire property unit with a size of approx. 1,650 m². After the design planning was completed in summer 2019, all documents for the building permit request were compiled and submitted to the Dresden Construction Supervision Office in October 2019.
The work within the project CUBE in 2019 concentrated on the construction feasibility of the carbon reinforced concrete components. The building area BOX, which is dark coloured from the outside, consists of semi-finished double walls and prefabricated (hollow) ceilings. The project partners decided to plan, construct, manufacture and assemble five BOX double walls and a ceiling element on a 1:1 scale and put them together to set up a demonstrator. The two project partners responsible for the construction, Betonwerk Oschatz GmbH and bendl HTS Hoch- und Tiefbau GmbH & Co. KG played a key role in the execution of the work. With the help of technology tests, the planning and execution processes, the material and time expenditures, costs and achievable qualities were determined and exactly defined.
Ergebnis des Technologietests – BOX-Demonstrator
The structure of the white-appearing, curved TWIST roof was also be determined on the basis of structural and building physics calculations. It consists of a slim, hollow chamber-like, carbon reinforced support shell with 30 mm thick cover layers, 60 mm wide webs, a thermal insulation layer and a 40 mm thick carbon reinforced concrete weatherproof shell. The technical and technological feasibility was also worked out and checked under practical terms. For this purpose, the project partners along with the concrete spraying team from Pagel Spezial-Beton GmbH & Co. KG made test specimens, and also tested various concrete mixes, sealing and insulation materials and their interaction. In December 2019, the CUBE work was so far advanced that the implementation planning began and the building permit was submitted.
Report in the annual report 2018
C³ TECH DEMO HOUSE CUBE – DESIGN COMPLETED!
Entwurf des Ergebnishauses – CUBE
In autumn of 2017, students of civil engineering and architecture from the HTWK Leipzig, FH Aachen and the Università di Camerino, Ascoli, Italy developed and manufactured different basic concepts for the carbon-reinforced building – the C³ tech demo house CUBE, in course of the “International Design AAL-Workshops”, which took place at the HTWK in Leipzig. The elaborated concepts served as inspiration and groundwork for the CUBE-Team and the architects from the office “HENN” from Berlin, who was contracted to prepare the preliminary design. In February 2018, four concepts called “House in House”, “Roof”, “Hypar” and “Twist” were presented. The “Twist” concept was the most suitable one to fulfil the defined requirements, whereby the focus was on the landmark effect of the building.
Lageplan des Ergebnishauses CUBE auf dem Grundstück am Zelleschen Weg
In summer 2018, the preliminary design was refined to a building design which met all requirements concerning functionality, appearance, C³-demonstration potential, and the Saxon building regulation. The building has a ground and gross floor area of approximately 24.1 × 7.2 m (174 m²) and of 220 m² respectively. The longitudinal sides are oriented towards southwest and northeast along the road Zellescher Weg. The main entrance is located on the east side of the building close to the street Einsteinstraße. The building, which is designed as a technology demonstration house and test stand, consists of a presentation room on the ground level with a size of ca. 90 m² and a split-level block over two floors (100 m²) for building services, laboratories and sanitary facilities. The lower floor, which is located 1.6 m below the ground level, accommodates the building technology and some setups to test small-scale carbon reinforced concrete elements. The upper floor consists of three laboratories with a floor area of 11 m² each. There, different building physical and load-bearing relevant measurements are going to be taken. The window surfaces of the laboratories can be equipped with photovoltaic panels or different window elements.
The split-level block and the presentation room are covered by two twisted carbon-reinforced concrete shell-like elements, which serve both as a wall and as a roof. They have a length of about 30 m and a varying width of 4.0 to 7.2 m and support each other. Their shape – given by a ruled surface – was chosen in that way, that natural light could be used in the presentation room through a top window-band. A glass façade under the twisted elements forms the spatial closure. In winter 2018, the building is planned in detail.
Report in the year book 2017
C³ TECH DEMO HOUSE CUBE – STARTED
Design of a carbon reinforced concrete building
On 1.9.2017 the kick-off meeting for one of the largest sub-projects of the project C3 – Carbon Concrete Composite with the title ‘C3 technology demonstration house – CUBE’ took place. Before the project’s start, over a period of more than one and a half years, project outlines and preliminary studies were worked out, discussions were held with companies and partners, a financing concept was developed and, above all, a construction site was organized. For an initial period of 10 years, the Staatsbetrieb Sächsisches Immobilien- und Baumanagement (SIB) Dresden has provided a nearly 1300 m² plot of land, located near the campus of TU Dresden. As the owner, the SIB takes over the preparatory works on the foundation ground, both the public and non-public media development, and the operation of the building.
The aim is to show and demonstrate on the real object that carbon reinforced concrete is usable and practical! The entire manufacturing process chain, including engineering, structural analysis, acquisition of approvals, cost calculation, the award of contracts, site supervision, erection and use, is presented and traversed. Carbon concrete is used as building material, as protective space cover and as a material for finishes. The building is mainly used as a demonstration building, research centre, and laboratory for the examination of durability, load-bearing capacity, serviceability and structural-physical properties of the composite material carbon concrete. To this, appropriate rooms will be provided for working and analyzing, measuring and presenting the research results.
The management and the directorates of the TU Dresden, as well as the Institute for Concrete Structures, have taken over the tasks of the building developer. The HTWK Leipzig, the offices AIB GmbH (Bautzen) and ASSMANN Bauen + Planen (Dresden) are intensively involved in the fields of architecture, building physics, planning and structural design as well as construction supervision. Support comes from HENN (Berlin) and texton e. V. (Dresden). Betonwerk Oschatz is responsible for the prefabricated construction elements and Bendl-HTS (Sebnitz) for the erection and assembly on site respectively. During 2017/18, planning of the building will be completed, including the required building permits, so that the building can be erected in 2019/20. The planned end of the project on 30.4.2021.