Vibe Cast invites the audience of Llum BCN 2020 to interact with this vertical installation, designed and built within the ETSAB-UPC, which casts the presence of the public into vibrant shadows on the public space, via a game of reflections. An emergency staircase serves as a scaffold to hold a reflective membrane – and refractive at the same time –that vibrates with the air and translates the light onto the asphalt of the street, in different directions by means of a singular tessellation, to dazzle the participants and cast their shadows into temporary micro-intervals, at Poblenou’s Pallars – Pere IV intersection.

From the object – the staircase  –, the intervention witnesses the dialogue between the subject – the visitor – and the public space through the absence of light – the shadow –. The membrane, which acts as a mediator, through its specular pattern, translates the light from the vertical plane to tackle questions of space, time and citizenship in a language of shadows casted on the horizontal plane. This phenomenon becomes an individual discovery but also a collective experience, while a vibrant atmosphere arises.

(*) This design has been developed within the ETSAB UPC, and led by Carles Sala and Relja Ferusic from SALA FERUSIC Architects.