A commercial building is built on a slab on grade foundation that is a 40 m by 18 m rectangular shape. Assume the outside design temperature is 15°C. Determine the rate of heat loss through the exterior edge of a concrete slab.
a. For an uninsulated slab edge perimeter.
b. For a slab edge perimeter insulated with 25 mm of perimeter insulation (an RSI-value of about 0.44).
c. For a slab edge perimeter insulated with 50 mm of perimeter insulation (an RSI-value of about 0.88).