CA105.3 Construction Description
Floors are assumed to be either joisted floors framed on 16-inch (406 mm) centers, or post and beam on 4-foot by 8-foot (1219 mm by 2438 mm) squares. Insulation is assumed to be installed under the sub-flooring between the joists or beams with no space between the insulation and the subfloor. Insulation is assumed to be uncompressed. Exposed floors also include concrete with continuous rigid insulation assumed.
Perimeter insulation is assumed to extend from the top of the rim joist to the crawlspace floor and then inward along the ground (on top of the ground cover) for at least 24 inches (610 mm).
Floor coverings are assumed to be light carpet with rubber pad.