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