IECC 2012 standard reference constructions are detailed in tables C402.2, C402.1.2 and C402.3 of the standard.
Table C407.5.1(1) details the construction types to be applied to the standard reference model as follows:
As per the ASHRAE 90.1 navigator, the selection and application of standard reference constructions is made via the construction type selector dialog. However, in this case, the selection is limited as external walls and vertical glazing are the only category’s containing multiple options.
