There are certain areas of the aisle where I need to change the elevation of the floor, in some cases as high as 15" high above the base floor.  Because the elevation changes are in locations that would create tripping/falling hazards if operators do not pay close attention to where the steps are, I do not want to have steps, so I want to slope the floor up and down.  The issue becomes the slope itself and how much elevation can be gained in the least amount of length of aisle.  I know from looking at codes for "ramps" for wheelchair access, etc is a maximum slope of 1:12, but this isn't being designed for that purpose.  So would 1:6 or even maybe even 1:4 be usuable for operator aisles?  Any thoughts?

Ken L.