The Edification Subject Of Intervention

The University Palace (Fig. 1), heritage building located in the University Campus of Praia Vermelha houses some faculties of Federal University of Rio de Janeiro. It is a neoclassical style building, situated in the city of Rio de Janeiro, listed in Brazilian Historic and Artistic Heritage Institute.

The building exhibits restored rooms, ceilings and walls smartly decorated, frequently used for concerts, congresses, academic, technical and administrative activities and solemnities. The rectory appointed these areas to the academic community and to Rio de Janeiro inhabitants' use.

4.1 Restoration of wood floors

The loose fixation between the beam and the clapboard of the floor in Education Faculty of Federal University of Rio de Janeiro lead to a prospective action in order to find out its cause. The primary visual survey pointed to some clapboards disconnected, next to the walls. These supporting walls were wet. By analyzing the roof conservation status over these areas, it was possible to detect clogging of the rainwater down pipe, leading to an overflow above the gutters, causing frequent infiltrations in the internal face of the wall and also percolating its core, reaching the supporting clapboards wood beams. This humidity has created ideal conditions for the termite and fungus infestation in the floor. Around 60% of the wood beams were infected by termites. The micro-organisms and urban plagues, as we know, burgeon at humid zones, promoting the rottenness of part of this beams, reducing partially or drastically its original section (Fig. 2).

The Restoration Department was designated to work on a strengthening project of three wood floor rooms: (1) Science and Culture Forum coordinator

Figure 2. Assessment discloses a drastically reduced section of some beams. Photo: Hoirisch, M., 1995.
Figure 3. Location of interventions, DAMSTRUC (2005).

cabinet, (2) Coordination of Post-Graduation Program of Faculty of Education Coordination. (3) Golden room (Fig. 3). Under the supervision of the head architect, a multidisciplinary team was gathered, composed by urban plagues biologists experts, structural engineers, and a proficient firm specialized in wood structural restoration. The practice work evolved, therefore, in three lines. In the first one, biologists determined the termites infecting species, in order to guarantee the efficiency of the plagues control program. In the second one, structural engineers calculate the remaining section of each wood beam, to make the structural assessment. Finally, the practice restoration work was carried out according to the engineers strengthening project.

The wood beams were properly inspected. For this purpose, the clapboards of the rooms to be restored were removed after being mapped. The most vulnerable zones, located in the extremities and under the roof gutter called for extra care. The tongue and groove connections of the clapboards to the wood beams were previously done by means of long forged iron nails. They were then replaced by steel screws. This system allowed the access to the beams, as long as from that time on the wood beams assessment was to be made

Figure 4. Fixation of floor beams in Science and Culture Forum coordinator cabinet. Photo: Hoirisch, M., 1996.

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