If the NCM does not cover a building type or the Shell Only / Shell and Core project types, assessment using “Option 1 – Use of approved building energy calculation software” can still be used according to the guidance given in the technical manual.
The generation of the notional building can be done by using the Appendix G Performance Rating Method of ASHRAE Energy Standard 90.1-2013 (for all buildings except low rise residential buildings) or ASHRAE Energy Standard 90.2-2007 (for low rise residential buildings). Any imperial units used in the standards are to be converted to metric first before they are used in any calculations.
Prior to taking this approach the assessor should be satisfied that the NCM does not cover the assessed building type, and relevant evidence should be submitted to demonstrate this.
For International 2013 assessments where ASHRAE Appendix G is used, regardless of the robustness of local regulations the correct Ene 01 translator curve used is “2. Good International Practice.”