C1 Minimum Information
The following minimum information shall be specified for the proposed design.
The building envelope assembly type, gross area, orientation, tilt, and associated space-conditioning category and building area type shall be specified. The surface shall be designated as exterior or semiexterior. A semiexterior surface separating a conditioned space from a semiheated space shall be specified with two associated space-conditioning categories. A semiexterior surface separating a conditioned space from an unconditioned space shall be specified with an associated space-conditioning category and with an adjacency to an unconditioned space. Exterior surfaces with the same building envelope assembly type and associated space-conditioning category and building area type whose orientations differ by no more than 22.5 degrees and whose tilts differ by no more than 22.5 degrees are allowed to be described as a single surface.
The class of construction, opaque area, U-factor, HC, and insulation position shall be specified. Where three-year-aged test data for the solar reflectance and three-year-aged thermal emittance of the exterior roof surface are available, the three-year-aged solar reflectance and three-year-aged thermal emittance shall be specified.
The class of construction, area, U-factor, SHGC, VT, and PF shall be specified for fenestration. For skylight wells, the width, depth, and height shall be defined as shown in Figure C1.4. Each fenestration element shall be associated with a surface as defined in Section C1.2 and shall have the orientation of that surface.