I have a design with a 3' wide by 11' tall stair unit that is against a wall. Right now the designer has no railing. I am trying to push him in the direction of railing because of safety but he says it ruins the aesthetic. Problem is that the only information I can find from OSHA is about rigging and construction fall protection and nothing about performance. Can anyone point me in the right code direction or have any idea how wide the staircase should be to not need railing? (I don't think that width exists so the OSHA code would be best). Safety is number one but I want to make sure I at least try to look at options for him.