Originally Posted by Big Bob
So are you shifting your ceiling and second story loads to load bearing walls? Do those areas have the proper foundation for the added load?
How far are you spanning? / will you need to add a beam below your ceiling plane or is steel an option ?
What is current access to upstairs.. tapping into that may be more of a DIY thing then what you are thinking with cutting into your structure.
Well the design of the stair case has two pillars one is where the curve is and it will go from the floor of the first to the second. Most of the length of the opening is between 3 supporting walls the wall to the right is the only one that is a non supporting wall. I figured with 81x36 inches would be required for the staircase most of it is for head room the floor below would be supporting most of the staircase level and then the post would add further support to the floor where it is added. It is not a very heavy unit it is just for general use. here is the link to it. http://www.theironshop.com/metal_restrict_03.htm
I was more worried that the opening was supported properly and wonder if the added joists will help it. The floor below is very well supported as well. The unit would be sitting right between two supporting walls could there be any problems with that? I am not sitting it right next to them I am giving it room for the double joists 2x8s to make up for what is being lost. Would this make up for it or should i add more than that to support it. The staircase is rated for 700 pounds not one i would put 30 people on for a family photo just enough to safely access the upstairs.
Oh and the access to the apartment upstairs is outside through another hall but then we would have to tear out the kitchen plumbing (dishwasher and rearrange everything gas lines the whole nine only to gain access to the bedroom and we would have to walk through a bedroom to get to the rest of the upstairs. Not a very logistical way for us to work. I spent a while picking the location and trying to determine the best way to get this thing done without distrupting the whole structure (ie having to make openings in supporting walls or blocking doors etc.) It is either this way or no way. Can't afford an addition otherwise I would do that and just have the staircase go up that way. Sucks but this is the only way. Thanks for the help and hopefully I can learn some more stuff that can make this process smoother.