Open sided stairs should have railings and midrails on both sides. The top rail should be 30-34 inches from the front edge of the tread and withstand a load of at least 200 pounds. The end of the railing should not cause a projection hazard.
1910 Subpart D – Walking-Working Surfaces;1910.23 – Guarding floor and wall openings and holes;1910.23(d)(1); 1910.23(e)(1);
Stairs, railings, fall protection
K. Richardson, GFAI