The invention relates to a shower tray comprising a base element provided with a peripheral edge from where an inclined surface projects towards a drainage opening, and a surface for supporting the user formed by floor tiles, and comprising strips which protrude from the inclined surface, wherein the upper faces of the strips form a horizontal base surface for the floor tiles, a groove is formed at least between two floor tiles for the evacuation of the water towards the inclined surface, wherein first ends of the floor tiles are secured on at least one transverse band or strip, and one swivelling end of the transverse band or strip comprises a corner with a right-angled profile and adapted to slide on the longitudinal recess, when the floor tiles are withdrawn from their horizontal base surface.