What is the minimum height requirement for a concrete slab supporting appliances installed at grade level?

The minimum height requirement for a concrete slab supporting appliances installed at grade level is typically set to ensure that appliances are protected from moisture, water intrusion, and other potential environmental hazards. A height of 3 inches is significant because it provides a sufficient elevation that helps to keep the appliance above the surface where water can accumulate. This is especially important in areas that might be prone to flooding or where water drainage could be an issue.

Higher elevations also facilitate better maintenance and repair access. Adequate height aligns with industry standards and codes designed to enhance safety and operational efficiency for appliances that may be susceptible to damage from ground-level conditions. Therefore, a concrete slab height of 3 inches effectively meets these concerns and is the minimum standard used to safeguard appliances installed at grade level.