An office building on a trapezoidal site which forms part of the actions for sector 22@ in Barcelona. The 22@ project is transforming two hundred hectares of industrial land of Poblenou. This is an initiative of urban renewal and transformation in the city of Barcelona, where many important companies are fixing their headquarters.The slender office tower for the enterprise information technology Indra is located there, with a total height of fifty-two meters and a minimum width of only fourteen meters. The total built surface area is 10,375 m2 and it consists of a ground floor plus 12 more floors.The headquarters is located in a solar trapezoidal appreciably plane and its floor is rectangular, exceptionally interrupted by the corner of the intersection of streets. The floors located above grade are devoted to offices, and those below grade to parking for 40 vehicles and service rooms for private use. The proposal is for a tower rising above a more solid and compact three-storey plinth, aligned with Carrer Tànger. The tower section, with a rhomboid floor plan, follows the line of the chamfered corner, without slavishly reproducing it, to reinforce the slender complexity of the resulting volume. Its ten storeys are separated from the plinth by a service floor, recessed with respect to the plane of the facade, so that it seems to float above the base, lending it lightness.On the ground floor is located the main entrance and the lobby of the building, which is accessed from the corner. The vertical structure consists of a core pillars shielded and which lies at the heart of the plant, trimming back the facade of the building. This nucleus which houses communications vertical building stabilizes horizontal forces of wind and controls the natural effect of overturning the sheer volume built.The facade is made with a glass curtain wall of panels 1.30 meters that allow the vision or opaque it depending on the areas located immediately behind. The inside glass skin is housed within the curtain wall of anodized aluminum profiles. These profiles are reduced and the panels are limited to a single sheet metal in its wake in front of the screen walls of concrete and maintain, thus, the same distance to the external front. Towards the outside, this is closed with a second skin of glass glued on the aluminum frame construction only in areas of vision. Moreover, in some areas, the glass was replaced by lamellaes, also glass, allowing ventilation of the premises interior. In recease that leads to the main entrance, facade panels have a special outer surface of stainless steel. The technical plant, in the fourth level, presents an open enclosure of metal slats to allow ventilation combined with internal opaque parts.The external skin of the facade is made up of panels of stainless steel metal fabric that act as perimetral solar protection (with a shade coefficient of 50%) for the interior of the building as well as contributing to the overall lightness of appearance. A quarter of these panels have a 90 cm diameter spherical impression created by drawing. These are located in two positions on the height of the panel, and alternately face inwards and outwards .It is an economical but effective way of reducing the amount of radiationincident on the facade without sacrificing large transparent glass facades. It is the result of research into ways of contemporary architectural decoration that serves to reinforce the corporate identity of the company (Indra’s logo consists of lots of circumferences).This being a corporate building, diaphanous floors are proposed, although the possibility has been considered that in the future they could be divided up into several units.
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