34 Pa. Code § 47.254 – Exceptions.

(a) The requirements for elevated runways and platforms shall not apply to the following:
1. (1) Small platforms for motors or other similar equipment unless there is standing room of at least 18 inches in width on the platform beside the equipment.
2. (2) Shelves used for the storage of material on which persons have no occasion to stand.
3. (3) Platforms used for loading and unloading freight.
4. (4) Runways used in filling tank cars when equipped with standard railing on one side.
5. (5) Platforms used for pouring molten metal.
(b) Toeboards and intermediate rails are not required on platforms used only for storing lumber.