[coutch]

I have a 1920 house with narrow and steep stairs to my basement.

There's stringers going down to 2x4 "posts", then 3 winding stairs and a last bottom stair.

The winding stairs are NOT attached to the stringers, they are simply nailed to the riser above, seriously ....

The nails are pulling out, and there's nothing holding the whole bottom part to anything ... scary stuff

My plan is to build a series of "boxes" on top of each other to rebuild the winding part with 2x8 + the 3/4 thread height to match the current height (hair under 8 1/4).

I'd be using the same footprint as the existing stairs with 3 x 30 degrees turns.

Does it seem like a reasonable solution ?

 

[Mingledtrash]

You may as well redo the whole thing while your there it wont take that much more time.

If you could get your rise down it be better but if not, sounds reasonable to me.

do you have room to make the stairs longer?

 

[SeniorSitizen]

I say go for it and don't be concerned with codes if they are mentioned. We would sure like to see the end result of course.

 

[Mingledtrash]

I say go for it and don't be concerned with codes if they are mentioned. We would sure like to see the end result of course.

1104.10 Stair dimensions for existing stairs.
Existing stairs in buildings shall be permitted to remain if the rise does not exceed 81/4 inches (210 mm) and the run is not less than 9 inches (229 mm). Existing stairs can be rebuilt.

http://publicecodes.cyberregs.com/icod/ifc/2012/icod_ifc_2012_11_sec004_par013.htm
Funny you should mention the code.:devil3:

 

[carpdad]

Finer points but glue 1/8" pvc panels on the wall. Moisture barrier and finish wall at once. You can screw through the panel for any fastening, etc. Drill holes through the box frame for ventilation. Enclosed box there will start to get musty.