Is there a minimum acceptable distance for spacing materials, product, equipment or other items on a floor to minimize exposure of employees to slips/trips/falls, contact with and other hazards.

There’s no rule that stacked or stored materials be placed a specific distance from an aisle or other walking area.

OSHA does not list a minimum distance for general material and equipment spacing. Instead, the regulation at 1910.22(a)(3) says: “Walking-working surfaces are maintained free of hazards such as sharp or protruding objects, loose boards, corrosion, leaks, spills, snow, and ice.” If there’s a risk of employees tripping and contacting a protrusion, that hazard should be addressed. There is a material storage 1910.176 that simply says, “Storage of material shall not create a hazard.” If there’s a risk of materials falling on employees, then OSHA would likely address the stability of the materials rather than the distance from workers (since, at some point, someone would need to approach the stacks).