Design Standards for Stairs, Railings, and Restroom Accessories
All stairs, guardrails, handrails, and restroom accessories shall be designed by a registered structural engineer according to the following criteria:
Stairs
| Component |
Design Requirement |
| Stringers, Treads, Risers |
Designed for 100 PSF live load |
| Individual Treads |
Designed for 300 lb concentrated load at the position causing maximum stress |
Handrails and Guardrails
| Component |
Design Requirement |
| Top Rail (Guards and Handrails) |
Withstand 50 PLF horizontal load at right angles or 200 lb concentrated load in any direction |
| Intermediate Rails, Panel Fillers, Connections |
Withstand 50 PSF horizontal load over the entire tributary area, including openings and spaces |
Restroom Accessories
| Component |
Design Requirement |
| Grab Bars, Tub & Shower Seats, Fasteners, Mounting Devices |
Resist a 250 lb concentrated load at any location and in any direction |
