The roof is staggered (which respects the visuals from the upper street) based on three metal trusses, 28 meters long and 4.8 meters deep. Both the secondary structure and the substructure of the covering cellular polycarbonate have been modulated following the direction of the diagonal straps of the trusses.
Description of project by ELE arkitektura + TARTE
Reactivation of urban space. The intervention is part of the rehabilitation plan for the Txabarri neighborhood, with El Sol square being the largest reference of public space in this degraded area. The morphology of the square, divided into 3 different levels (+0, +5, +10), makes this space work as a hinge between the upper and lower areas of Sestao.
The project is divided into 4 fundamental lines of work.-
1. Urbanization. The unification of the different existing finishes has been sought by means of a continuous polished-bush hammered concrete pavement. The retraction cuts of the concrete have been made following a triangular pattern based on the triangulation of the main trusses of the “Frontón”. This plot has structured the entire urbanized space integrating furniture, green areas, lighting,…
2. Treatment of green areas. Existing green areas have been regenerated by eliminating vegetation in poor condition and planting suitable trees and species for the needs of each space.
3. Treatment of the walls. The existing different in height creates retaining walls of a different nature in the south elevation of the square. An attempt has been made to unify both the texture and the color of all the walls, as well as the railings. In addition, climbing plants have been placed in areas where it is interesting to reduce the presence of walls.
4. Covering the “Frontón” and the pergola. A stepped roof has been built (which respects the visuals from the upper street) based on three bi-supported metal trusses of 28-meter-long and 4.8-meter deep. In the horizontal sections, with an inclination of 20%, the same triangular pattern is repeated as in the trusses. Both the secondary structure and the sub-structure of the cellular polycarbonate covering, have been modulated following the direction of the diagonal straps of the trusses.
Everything is modulated according to the size of the cellular polycarbonate plates, generating constructive cleanliness and dimensional coordination throughout the building. The pergola has been formalized by extending the lowest truss of the “Frontón” another 28 meters to the east, parallel to the existing retaining wall. This truss is supported by the facade wall of the “frontón” on one side and on a triangular reinforced concrete post at the other end. In this way, the appearance of columns that could disturb this open area of the square has been avoided.
