Staircase for underground swimming pool, has case with openings for passing sealing material towards pillars and base of stand, and with reinforcing units of main wall and intermediary support unit

摘要

The staircase has a neck handled against and along the length of an external face (3) of a main wall (1) for forming a case (7) which receives a sealing material. The case has openings (12, 13, 14) for passing the sealing material towards the formworks of pillars (5, 6) and towards a base (15) of a stand. The case has reinforcing units of the main wall and an intermediary support unit by the stand.