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Kenneth LiDonnici, P.E.
According to Architectural Graphic Standards, Tenth Edition, stairways “...are the site of accidents resulting in approximately 4,000 deaths and one million injuries requiring hospital treatment annually in the United States.” No wonder, then, that several mathematical formulas have been developed to help minimize stairway tripping hazards. Most notably, these formulas regulate the ratio of the height of the riser to the depth of the tread for the contiguous steps of any given stairway. In addition, various other restrictions are imposed... all with the aim of assuring safe and comfortable stairways.
Now then, when an exterior stairway spills out onto a sidewalk with an appreciable slope, it is not possible (without the use of the techniques which this new method teaches) to obtain a uniform ratio of riser-to-tread, thereby possibly introducing a serious tripping hazard. In any stairway it is most important for that ratio to be consistent. The mind of the pedestrian using a stairway is very quick to implant a biomedical rhythm, and to predict just how high the next will be. To encounter even a slight difference can result in tripping. This unique course teaches how to avoid the dangerous conditions that exist, to a greater or lesser extent, wherever steps interface with a sloping surface.
The course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of the course materials.
NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.