If the gabled roofline is insulated, what would the conditioned attic volume be?

To determine the conditioned attic volume when the gabled roofline is insulated, it's essential to understand how the dimensions and angles of a gabled roof contribute to the overall space. Generally, the conditioned attic space is calculated based on the volume formed under the roof, taking into account its height and the shape of the roof itself.

In a gabled roof configuration, the space extends from the walls of the house upward to the peak of the roof. The volume can be calculated using the formula for the volume of a prism or pyramid, depending on the dimensions of the attic space. The volume typically is a function of the length, width, and the average height of the attic.

The correct answer reflects a comprehensive calculation of these dimensions, which leads to the value of 5,728.8 cubic feet. This signifies that when the insulation is properly installed in the gabled roofline, it affects not only the thermal boundary of the conditioned space but also retains a significant amount of volume within the attic that is effectively part of the home's conditioned living area.

Understanding the relationship between insulation and the volume of the conditioned space is crucial in energy efficiency ratings, as it plays a significant role in energy performance evaluations within the HERS index.