A wall is then created across the brackets. Then the concluded treads are bolted in position. These treads might be of metal or wood or Wooden clad steel. Cantilever ways must be created by a structural engineer, so that they continue to be horizontal and rigid with use with time. https://staircaseinspirations.weebly.com/blog/the-rise-of-cantilever-staircases-in-contemporary-homes