Abstract: Portable terrace installation with seats, including one or more sections, each section comprising a pair of sloping joists and a number of upright seating beam pillars connected to the sloping joists. A corresponding number of parallel and horizontal seating beams connected to the pillars are provided and extend between opposite beam pillars on the pair of joists. Each seating beam has opposite ends and has a height which is greater than its width. A flat floor surface extends between the seating beams and is connected to the joists, and a number of free standing trestles are provided for supporting the joists. A first connecting element is provided on the side of the beam pillar facing the seating beam, with the first connecting element extending essentially vertically along that side.