A commercial building is built on a slab on grade foundation that is a 120 ft by

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A commercial building is built on a slab on grade foundation that is a 120 ft by 48 ft rectangular shape. Assume the outside design temperature is 5°F. 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 1 in of perimeter insulation (an R-value of about 2.5).
c. For a slab edge perimeter insulated with 2 in of perimeter insulation (an R-value of about 5).

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