Hello everyone,
I am currently modeling an office building for BREEAM certification purposes. I am used to model according to the LEED methodology and I have some questions about the model implementation methodology for BREEAM purposes. So, for BREEAM we have to create 3 models: Notional (Legal standards), Actual (As designed) and Best practice.
Since BREEAM does not provide a complete methodology for how to model each component for the Best Practice case (as it is the case with ASHRAE 90.1-2010 App. G for LEED), I would like to ask which parts of the model you usually keep the same as designed. For instance, my Actual building has internal automatic shading devices, as well as fixed external shading "blades". In this case, shall I model the same in the best practice building as it is designed? Or should I keep the the internal shading and not model the external fixed shading blades?
And what about the rest of the inputs?
The Appendix B from the guidance note 25 (GN 25 - BREEAM International New Construction 2016 ENE 01 Calculation Methodology) only regulates a few inputs, namely: U-values, Light Transmission, solar factor, air-permeability, some equipment efficiencies, etc. Moreover, they define some best practice specifications as "where appropriate", as for example it is the case with dimming control. What is "where appropriate" for diming daylight control? For me it is every perimeter (near glazing 4-5 meters) zone, but it can be subjective.
I am looking forward to read you opinions on this subject and thank you in advance.
