TUM MakerspaceGroup BThu NguyenNicole GlassMiguel VegaMoritz Brückner

ARCHITECTURE

The existing building is extended vertically by two new floors. The existing 2nd Floor is demolished to add a new ring-beam onto the historic masonry.

The three constructive axis, that the existing building is proposing are transferred into three new rows of columns in each new floor. By this constructive necessity the new rooms are divided into one big workspace and a smaller zone of adjacent rooms like the staircase, the elevator and the sanitary rooms.

The workspaces follow the order of a big heavy duty workspace at the ground floor for milling machines and heavy materials. Therefore, the height of the rooms is increased by demolishing the lightweight and drywall constructions of the mezzanine floor. Above we can find two identical smaller workspaces for lighter works like 3D-printing and assembly.

Since light is an important factor in building good workspaces, we designed a cast-glass façade that consists of two u-shaped glass profiles sandwiched around an translucent insolation panel. This façade provides on the one hand the essential light supply and fulfills on the other hand the minimal thermal insulation needs. We used the Wacotech system as a main reference for this kind of construction. With their system we can reach an thermal insulation grade similar to a high end tripple glazed window.

The surfaces of the workspaces are mainly raw concrete, that helps to from an industrial and durable atmosphere of the rooms. The floors are covered by an industry grade of cement screed with an layer of very durable 2-k coating. As another atmospheric element we introduce a concrete ribbed ceiling, that also fits into the static system of our proposal.

STRUCTURE

A second model needed for the analytical calculation had to be constructed in Revit.The static system of the two additional floors is very simple: in three rows there are each eight concrete columns of class C20/25 with a diameter of 30mm. The bracing is additionally provided by the elevator core and the staircase The analytical system has to be adjust in Revit. We had to edit analytical columns, floors and walls manually.After connecting all the nodes correctly and add loads, the model was exported from Revit to Sofistik. The FEM-program calculates the dead load automatically through the defined cross sections. The following external loads result from the location of the downtown campus in Munich at 517.48 meters above sea level. A conversion of the loads is not necessary, since a flat roof is used. Live loads were calculated for office space and recreation rooms according to live load category B1 for office space, work areas and corridors (DIN 1055-3) with qk = 2 kN/m². A load of 5 kN/m² applies to the ground floor, as heavy equipments, such as milling machines, are to be expected here (DIN 1055-3; category E1). The maximum critical wind load on walls in wind zone 2 is 0,80 kN/m² (DIN 1055-4). The walls are applied with western wind assuming to be the decisive wind direction, since the east side of the building lies in a wind-protected area due to the surrounding buildings.According to special regulations, a characteristic snow load sk = 1.15 kN/m² is available for MunichFurthermore, the following combined load cases get calculated automatically by Sofistik

The maximum deformation on the roof is 1,79 cm. This value is within the range of permissible deformations (DIN 1045-1).

ENERGY ANALYSIS

It was decided early on that the façade would be made of concrete and glass. A key concern was to have enough natural light because it can improve productivity and reduce eye strain. From an architectural point of view, it also makes sense to have natural light, as it makes spaces appear larger.

Due to the location of the building, the glass walls are the ones with the most exposure to sunlight, which is why we chose to use Lamberts Linit (glass) with Wacotech insulation, the resulting product has a Ug value of 0,79 W/m²K and a total energy transmittance of 0,19. The trapped, stagnant air offers optimal thermal insulation and at the same time good light transmission, which leads to strong light scattering and room depth illumination. Furthermore, this product offers sun and glare protection and sun shading, thus also protection to overheating, which is of the utmost importance in the summer. In the winter, the use of the Wacotech insulation means less heating is necessary, which also means lower costs.

The lighting simulations were done with a simplified model using curtain walls and no windows. Due to the complexity of our chosen structure it was only possible to model an approximation for the lighting simulation. This is why the simulations are only rough approximations. The lighting simulation chosen was: LEED v4 EQc7 opt2. Two simulations were performed, first with standard curtain walls and then with the custom curtain walls. The latter had the following results: 3% of the time the lighting was below the threshold and 11% of the time the lighting was above the threshold.

CLASH DETECTION

Due to the usage of different software for the diffe-retn designs, an asynchronous collaboration appro-ach was implemented. For the clash detection, and because of the existence of two models, a merging into a federated model was necessary to avoid in-consistency. The comparison of the architectural and structural model, as well as the solution of the clashes in the individual models were done in Solibri. Form this federated model in Solibri the coordinator produces BCF files to transport issues to the res-pective responsible. The responsible correct or give answer to the issues. The comparison of the models was done one more time in order to ensure total con-sistency and give approval to the models.

QUANTITY TAKEOFF

Thanks to the compatibility of RIB iTWO with Revit, it is possible to calculate quantities using the model. In Revit, the model can be exported directly to iTWO through the add-in. Components can be selected and sorted according to the model displayed, making it easier to create the bill of quantities adding prices.

Because of the fact that the Revit model is just used for analytical calculations, the fassade and the exact construction of the walls and floors (including insulations, screet, etc.) does not exist. The remaining quantity determination was thus carried out with ArchiCad, in which the complete architectural model is present.

Chair of Computational Modeling and SimulationChair of Architectural Informatics

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0.2 Storage

NRF:17,25 m20.1 Entry

NRF:54,24 m2

0.2 Heavy Duty Workshop

NRF:167,32 m2

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3.2 WC Gents

NRF:6,68 m2

3.3 WC Ladies

NRF:5,49 m2

3.4 Storrage

NRF:5,74 m2

3.5 Office

NRF:17,02 m23.1 Open Workspace

NRF:303,45 m2

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Fig. 7 Structure System (Revit Model)

Fig. 3 Ground Floor

Fig. 5 1st & 2nd Floor Fig. 6 Longitudinal Section

Fig. 4 Cross Section

Fig. 1 Exterior View

Fig. 2 Interior View

Fig. 15 Asynchronous Collaboration

Fig. 17 Quantity Takeoff

Fig. 16 Clash detection

Fig. 8 Node Model with loads

Fig. 9 Sofistik calculation model

Fig. 11&12 OG1 Light Analysis Standard Glas (left) & Castglas (right) Fig. 13&14 OG2 Light Analysis Standard Glas (left) & Castglas (right)

Fig. 10 Sofistik subsystem of the roof