Single Stair Stringer
Single Stair Stringer
(OP)
Does anyone have an experience or references for designing stairs with a single stringer in the middle? The owner would like to use wood. I am looking for ideas for stinger size/material and how to fasten the treads to the stringer. Thanks.






RE: Single Stair Stringer
The connection at the top and bottom will be tricky. Especially when you consider the potential of unbalanced load and the torsion at the ends. You might have better luck with 2 stringers spaced apart and centered under the treads so you still get some cantilever on the treads.
RE: Single Stair Stringer
http://www.houzz.com/single-stringer
Looked like most are steel tubing or big gluelam w steel frames holding the treads and handrail.
RE: Single Stair Stringer
RE: Single Stair Stringer
BA
RE: Single Stair Stringer
Mike McCann
MMC Engineering
RE: Single Stair Stringer
Watch out for torsional shear from tread-to-tread, oppositely loaded.
RE: Single Stair Stringer
RE: Single Stair Stringer
We did that once with a structural railing that supported the stair treads.
Railing worked like a truss.