Need help with stairs

[Jojo2016]

Looking for some help, figuring out my stairs. I have tried every calculator out there, and for some reason they are not working. I am trying to make stairs to my 2nd floor that has attic trusses. Here are my numbers.

2nd story floor to concrete-- 120"
Stair header to interior of outside wall-- 133"(total possible run)
Stairs will be 36" wide.
Plan on using 2 pieces of decking boards per tread with 1" hangover. Both boards together equal 10"

I have tried multiple rise/run combinations, even tried a 20" high platform, and still couldn't get it right.

So any help or advise will be greatly appreciated Thanks

 

[the GOAT]

http://www.renovation-headquarters.com/stairs4.htm

 

[Kaizen]

120 divided by 7.5 equals 16 stairs. You would need about 160 inches where you have 133? So you need to make 13 treads and three going another way. On the bottom wall you should have a platform and turn down 3 steps. Roughly off the top of my head. Is that physically possible?


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[Kaizen]

Looks right to me but I'm not a pro. Don't forget to add for finish floor at second level if you are doing that


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[tomshep]

I had a similar situation with a platform and one step at the bottom to get the desired number of steps. Problem is the platform and extra step ate a lot of wall I didn't want to lose. I had them redo the steps so they were another 2.5" as I recall and no platform. The steps are taller than normal and a bit of a pain, but I only use them a few times a year. Glad I did them taller and kept the wall space.

Tom

 

[Jojo2016]

Yeah, pretty sure I am going to need a platform. I guess I have the wall space for it. I would rather not, but I also don't want the steps too steep to use alot

 

[TTTTTT]

I put a platform at the bottom of this stair to make it work. I was able to use 2" x 12" x16' to make the stringers. I always lean the 2x12 between the top and bottom what works the best then a level at the top cut the first riser and the bottom horizontal on the platform or ground. Then put it back up and then work backwards to do the layout.




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