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In: Advanced Math

A building has a 9’ deep basement (foundation) wall that is 160’ long. The wall has...

A building has a 9’ deep basement (foundation) wall that is 160’ long. The wall has no windows. On average, 8’ of the wall is below grade (underground). Assume an outside air temperature of 10°F, an inside temperature of 70°F, and an average ground temperature of 45°F.

a. Determined the rate of heat loss through the wall below grade if it is uninsulated.

b. Determine the rate of heat loss through the wall below grade if it is insulated with an R-value of about 12 hr*°F*ft2/Btu.

A commercial building is built on a slab on grade foundation that is a 120’ by 48’ 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” of perimeter insulation (an R-value of about 2.5).

c. For a slab edge perimeter insulated with 2” of perimeter insulation (an R-value of about 5).

Solutions

Expert Solution

Colby Messinger answered 1 week ago
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