RELEMR WORKSHOP, Lisbon October Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area

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1 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area The intervention carried out in the building located at Recolhimento Street n.º 28 to 36 in the S. Jorge Castle Residential Area, aimed at providing the best property habitation conditions and security, seeking to remove dissonant elements that have changed the original composition of the facade, also reshaping the geometry and material of the roof. This is an old building from the late nineteenth century, which has the characteristics of buildings with the implementation of the Gaioleiros structure (Wooden structure with Saint-Andrew crosses filled with bricks). It has a total of five floors, twenty apartments and a total floor area of m 2. The main facade of the building is covered with tiles that have been maintained, as also all the decorative elements typical of the time of construction, including the cast iron rails, platband and the capstone configuration. In order to provide better living conditions to the top floor apartments, the geometry of the roof was changed and was transformed in a garret ( mansard ). Although all the framework for windows and doors is new, it was designed to respect the spirit of the existing framework. In terms of the facade, the architecture limited itself to eliminate the dissonant aspects to be found (aluminium windows, blinds, etc.), re-framing the windows framed in wood. All the infrastructures were reinstalled for water, gas, electricity, telephones, cable television, as well the sewerage. The existing building is structurally composed of masonry walls of mortared stone in its outer contour and inside the building in frontal walls of wood filled with brick masonry and wooden beams for floors and roof. Due to the fact that the city of Lisbon is in the seismic zone A, as defined in the zoning regulation and Security Measures Structures of Buildings and Bridges RSA, the joint connections between the wooden structural beams for floors and roof have auxiliary metal pieces. These reinforced connections provide an improvement to the behaviour of the building against earthquakes. The stability, studied the building as one, and tried to comply with the original construction techniques used in the building. In the sequence of the structural changes made, and with the dual purpose of rehabilitating maintaining the original construction processes, improving in particular by giving them better resistance to earthquakes by the interconnection between the structural elements, such as: Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 1

2 Full replacement of the roof, which was rebuilt in wood structure, made compatible with the design proposed by the architecture. The wooden beams were laid out like sticks connected with metal pieces, vertical beams slightly inclined (constituting the walls of the attic) supported on the exterior walls. On the top of the exterior walls, was made a reinforced concrete lintel all the way around, connected by bolts for the purpose of joining them. Elimination of the covering materials in kitchens and bathrooms with full replacement of the wooden beams as principal elements and secondary elements such as billets and floor coverings. In this mentioned areas the solution found was the application of viroc boards (cement and wood mixture compose), which in turn were fixed with screws to the wooden beams. Along the walls of the periphery on its inner side, a metal beam in U shape (UNP160) will be introduced, which is connected with metal pieces in the outer walls and joined by metal cables. That has the function of connecting wood flooring to exterior masonry walls, in order to ensure and improve the resistance of the building against earthquakes. Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 2

3 Fig. 2 Fig. 3 Fig. 4 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 3

4 Fig. 1 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 4

5 Fig. 5 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 5

6 Fig. 6 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 6

7 Fig. 7 Fig. 8 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 7

8 Fig. 9 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 8

9 Fig. 10 Fig. 11 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 9

10 Fig. 12 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 10

11 Fig. 13 Fig. 14 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 11

12 Fig. 15 Field Trip Notes on the building visited at Recolhimento Street, S. Jorge Castle area 12