I was trying to figure out what I wanted to do for loft access,without taking up to much space. I think I like this. thought id put the info on here in case someone else was interested
Ships ladders are very common around here for camps and log cabins.
It provides limited access to small areas as a bunk room or a loft as it is called. It is not meant for full access for all.
The stair design is OSHA approved when built accordingly.
There are no specific code requirement that I can find other than this here.
The stair should be within the parameters of 50-70 degrees from the horizontal.
The side rails should extend beyound the floor level above by 3'.
The one in the picture supplied to us in the above photo is a safety hazard. And that includes the guard rail as Barry mentioned in his post.
This type of ladder is used quite often in the Commercial Sector for Mezzanine equipment rooms etc. http://www.live-work.com/lwi/codes/ladders.shtml