Quote:
Originally Posted by serene911
Hope these help..........
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I imagine they do, and I bet most if not all of them are not in the USA. We still have nosing profile requirements.
Good idea to crack open the code book and see if any of these meet code. Thinking 4-inch sphere above, and 6-inch sphere in triangle at the bottom especially, and of course you have to have a grabrail/handrail on at least one side (
commercial is both sides).
FYI:
IRC 2015 changed/lowered residential riser max. ht., many older designs will need to be modified for more run length and an added riser. Just a head's up.
The engineering for a one-off can be intimidating. I suggest going with a manufacture that carries an engineer's seal on their deigns, then all you do is add the treads and hope you pass inspection. Some jurisdictions will bust your balls, other's just want a piece of paper in their files with a seal on it relieving them of liability. Every project has a different bar set for it, life is not fair.
You will need the connections top, middle (
if there is a landing) and bottom equally engineered to take these point loads. Might end up with more than one engineer's seal.