Weigh in on the second public comment draft of LEED v5 here. You can reply to this thread or use the "Post a Question/Comment" button to start a new thread.
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Mark Terpstra
5 thumbs up
September 30, 2024 - 11:09 am
Responses to the first draft comments stated that ASHRAE 209 would not be referenced.
There is currently no reference to what type of energy modelling is required for the Integrative Design Process credit. All that is stated is an energy modeler must be a part of the design charette and the team must set "specific and measurable project goals".
It is our experience that unless massing analysis happens at the conceptual design phase, it does not happen at all. Once the project reaches SD, the building footprint and massing are set.
The first reference to energy modeling is in the Operational Carbon Projection and Decarbonization Plan. Even here it is not defined. We have seen project teams submit a literal "shoe box" energy model that does not reflect the proposed design in any way. As there is a lack of definition in the LEED reference guide, there is confusion over what is required here.
An analysis of massing is only referenced in the Enhanced Resileient Site Design. This ignores the impact of massing on the heating load of a building. See the BC Housing Guide to Low Thermal Energy Demand for Large Buildings.
At minimum the Reduce Peak Thermal Loads credit should have a mandatory requirement for an analysis of massing using the vertical surface area to floor area ratio (VFAR) or the TEDI.