Staircase - Intermediate Support for Stringers
Staircase - Intermediate Support for Stringers
(OP)
I'm designing an interior staircase for an existing building with the stringers spanning about about 13' (horizontal distance). I have to put in an intermediate support for the stringers in order to show them good. My plan is to use a 2x4 support wall in the middle of the staircase. I was going notch the stringers where they rest on the wall (making sure that it's not at a point in the stringers where the depth is at a minimum). Please see the attached jpeg - I've circled in red the detail I'm referring to.
Is an intermediate wall like this a good way to support the stringers?
Also, what is the best way to anchor the support wall's sill plate to the concrete slab (which is probably 4" thick)?
Is an intermediate wall like this a good way to support the stringers?
Also, what is the best way to anchor the support wall's sill plate to the concrete slab (which is probably 4" thick)?






RE: Staircase - Intermediate Support for Stringers
To anchor the sill plate, eoither shoot the plate to the concrete (Hilti), or use expansion anchors, or screw the plate into lead inserts in the slab. Any will work here.
Mike McCann
MMC Engineering
Motto: KISS
Motivation: Don't ask
RE: Staircase - Intermediate Support for Stringers
RE: Staircase - Intermediate Support for Stringers
RE: Staircase - Intermediate Support for Stringers
Bagman2524 and StructuralEIT - thanks for your suggestions too. I forgot to mention that the staircase is for a non-residential building, so I'm using a live load of 100 psf. Also, most of the materials for the staircase were obtained before I started working on the project, so I'm trying to get what they already have to work :)
Thanks again for all of your suggestions, I appreciate them very much.
RE: Staircase - Intermediate Support for Stringers
Keep in mind that if you attach to the wall, you will transfer sound to the wall...that can get annoying for stair sections.
RE: Staircase - Intermediate Support for Stringers
RE: Staircase - Intermediate Support for Stringers
Thanks again!