By R. Di Giulio
Because of adjustments within the composition of the inhabitants, society adjustments constantly with recognize to varied components together with age-structure, relations composition and the provision of strength. alterations result in occasions which are mirrored within the commissioning of constructions, that's progressively shifted from new development to the reuse and maintenance of current constructions. the variation of constructions frequently calls for the amendment of facades and the development in the back of. The scope of this motion in the rate shipping and concrete improvement area is to enhance ideas and strategies for envelopes of structures developed over the past 1/2 the twentieth century within the rate international locations. In different phrases it's directed at the development envelopes of the so-called non-traditional structures. This e-book relies on a help via fee, an intergovernmental ecu framework for overseas cooperation among nationally funded study actions. rate creates medical networks and permits scientists to collaborate in a large spectrum of actions in study and technology.
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Additional info for COST C16 Improving the Quality of Existing Urban Building Envelopes III
7 m of concrete wall remains above the door openings. This concrete thus works as a beam. The shear stress for concrete that is not reinforced is the boundary condition for wide openings in the walls. 65 N/mm², a shear force of about 70kN can be absorbed. 7 kN/m and allows a free opening of more than 5 metres. These dimensions are not usually required. Even so, assuming a span of 5m, the maximum support moment is about 60kNm. Depending on the type of steel chosen, between 280 and 450 mm² of steel must be added on the upper side of the beam and half of this value on the under side of the beam.
Alternatively, the rockwool can be placed on the false ceiling under the floor. The latter solution has the advantage that the connections between gallery and the inside of the dwelling remain the same. More over 50 mm of the original beam can stay and that makes sawing into the wall easier. To accommodate the stress forces on the underside of the floor some strips of carbon fibre reinforced plastic can be glued to it. After the strengthening with steel rebars on the top and with CFRP on the underside of the floor, it is necessary to remove concrete from the opening by drilling and sawing.
Figure 12. Removing (parts of) floor elements. 1 Urban interventions As stated before, the possible positive future for the building block lies within the urban situation. The building block is situated right next to the main shopping promenade and the cultural center of Marzahn. Also schools, parking space and recreation space is nearby. To be able to fully optimize the urban routes, it’s necessary to create breakthroughs in the building block (Fig 12). The first intervention is meant to enlarge the existing breakthrough to make it more visible from a distance and lighter.
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