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Unit E Office Building - Plano Norte de Oeiras

July 2004

PECS was responsible for the structural and foundation projects and for some specialties of the Unit E office building under the Plano Norte, located in Oeiras, Portugal.


In addition to the development of the projects, he was also responsible for their coordination and for monitoring the respective administrative licenses.

It is a building consisting of five floors and a technical floor, two buried (floors -3 and -2), a semi-buried floor (floor-1) and the remaining two in elevation (floors 0 and 1). The buried floors are intended for parking, the rest for offices. The building has an implantation area of ​​about 1850 m2.


The structural solution involves the use of 0.425m (0.325m + 0.10m) thick slab-shaped slabs on floors -2 and -1, and 0.40m (0.325m + 0.075m) thickness slabs on floors 0 , 1 and Technician using pre-effort. Therefore, non-adherent prestressing was used, distributing monochordings in the bands and ribs of the direction of greater span. Both prestressed floors have a similar distribution of prestressing varying only in the number of monochromes arranged in the massive bands. These slabs work supported directly on pillars, beams and walls, which transmit the loads to the foundations. These, depending on the characteristics of the terrain, are made using shoes. The resistant cores are located in central areas of the building in order to allow a good behavior to horizontal actions.


Specialties involved:

  • Excavation and Peripheral Containment;

  • Stability;

  • Hidraulic instalations.

Client: TDF, Sociedade Gestora de Fundos de Investimento Imobiliário, SA

Project: July 2004 / May 2005

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