Final answer:
The acceptable minimum distance for shelving to be off the ground in a walk-in cooler is 15 cm, which helps ensure cleanliness and proper air circulation.
Step-by-step explanation:
The minimum distance for shelving to be off the ground in a walk-in cooler is often regulated for health and safety reasons. Common standards require that shelves be at least 15 cm (6 inches) off the ground to maintain cleanliness, prevent pest infestation, and allow for proper air circulation. These regulations vary depending on local health codes, so it's essential to verify with local bodies, but the general accepted minimum is 15 cm.