We are using IES VE to show compliance with EA P2 and IEQ C8.1. For EA P2 we combined spaces with similar schedules to zones, separated by orientation. Because we use just one model, the daylight simulation is also made for the zones and not the separate rooms.
1. Are we allowed to use the EA P2 - zones for showing compliance with IEQ C8.1?
2. Unfortunately we did IEQ C8.2 room-by-room, which leads to the problem, that we aren't able to populate the combined supplemental spreadsheet, since our rooms differ from c8.1 to c8.2.
I'm thankful for any hints or advices!
David Posada
Integrated Design & LEED SpecialistSERA Architects
LEEDuser Expert
1976 thumbs up
July 1, 2011 - 2:36 pm
You might have a problem if 8.1 and 8.2 are using different areas or rooms for the two credits. We've seen reviewers ask for these to be redone with the same area definitions.
You might try doing your first submittal with the information you have, and provide a detailed narrative on why and how you've done the calculations that way. If you can show that the zone method for measuring daylight covers the same area or a larger area than you've used to calculate views, it might be accepted, or at least you'll get a chance to respond to the reviewers request for clarifications.
The key is to show that the same "regularly occupied spaces" are meeting both credit requirements. If the two credits are using different areas numbers or zones, your goal is to show the difference is made up by non-regularly occupied spaces that don't affect the credit compliance. It might be a hard thing to convince the reviewer, but it's worth a try!
Eddy Santosa
Director of SustainabilityDBR Engineering Consultants
376 thumbs up
July 9, 2011 - 12:07 am
Johannes,
Here is my opinion:
- First, you need to check when IES converts the model of the zone by zone energy model to daylight. Does the software keep the wall partition betweeen rooms since the energy simulation does not really need them. Energy model typically doesn't concern about partitions inside of each zone because they won't affect the energy calculation. However, the partitions between zones that create rooms are important in daylight simulation.
- If yes, you can use the model. Easiest approach is to convert zone by zone daylight result and input them in the spreadsheet or report using room by room. You need put a little effort but it eliminates the comments from the reviewer. By doing that, your EQ8.1 and 8.2 are same.
- If no, you can't use the model since the partition inside the zones are not in the model.
Hope it helps
Sadie Martin
22 thumbs up
July 19, 2011 - 1:51 pm
I'm new to IES and noticing our areas are different in the LEED Navigator report than in our Revit model. How do you adjust the analysis to match areas in the Revit model?