Word spread. An architecture student, Lara, downloaded the DWG to study its elegant joinery; a community center in town saw potential to replace their rickety stairs; an independent maker created a CNC-ready kit from the CAD layers. In the comments, people debated interpretation of the handrail curvature and the best finish to protect the exposed steel stringers. Each person who used the file left a note of thanks.
Because weight is shared between two members, double stringers can often support heavier loads (like stone or thick timber) with less complex engineering than a reinforced mono-stringer. Versatile Mounting: double stringer staircase detail dwg free