In reply to "Henry in MI", this project is outside. We do have alot of snow here in this area (West Nirginia). The end user wants to have long landings with minimum riser height. I have checked OSHA and BOCA Codes, to best of my ability, and could find no reference to this other then the usual Riser Heights, Landing depths in relation to widths, etc. I do have a limit to overall lenght. The steps/landings will lead to a road (at which I will place a 3' X 10' level landing area).