bill1952
SAWHORSE
I'm building a landing and short flight of stairs (6 R at 6.16", 5 T at 12"), all interior, and while I've built a lot of stairs, this is a little more on display. Visible open risers, thick (floating) treads, and intended to be a bit of a centerpiece. I thought I should confirm my design met code (NY 2020 based on 2018 IRC) but was surprised to find very little on the structural aspects. Not even a minimal throat dimension nor mention. Did I miss something? What is the IRC "prescribed" stringer design criteria for interior stairs? (40 psf is all I found.) What should a plan reviewer look for or an inspector measure?
FWIW My span is right around 48" so I was looking at a throat of 4" - 2 stringers each 3 to 4" thick.If I thought it was "bouncy" I could add another layer (1" cherry) on the stringers and inset 3 x 1/4 steel flitch plates.
Thanks.
FWIW My span is right around 48" so I was looking at a throat of 4" - 2 stringers each 3 to 4" thick.If I thought it was "bouncy" I could add another layer (1" cherry) on the stringers and inset 3 x 1/4 steel flitch plates.
Thanks.