Optimal analysis parameters settings for LEED IEQ8.1 / IEQ2.4 calculations

[David_S]

Would anybody share what analysis settings in FlucsDL have you been using for LEED dayligting calculations? (e.g. Low, Low/medium, Medium, Medium/High, High)?

Going more into the depth, it would be good to know specifically:

- Optimal grid settings (advanced quality settings) - in my understanding, for LEED dayligth simulations it is sufficient to have at least 5foot grid, which is far higher than even the lowest quality setting. So I guess no problem there.

- Surfaces settings (advanced quality settings) - what boxes should be ticked - is default enough?

- Reflections calculation method setting (advanced quality settings) - No inter reflections, Average inter reflections, Full inter reflections/progresive radiosity?

Of course, I understand that more detailed model gives better insigth into the behavior of the building, but with major projects easily containing over 1000 rooms, there is a trade off between accuracy and speed.

Perhaps the question could be rephrased. In short - does anybody know what are the lowest quality setting acceptable for LEED calculations?

Many thanks for any thougts you migth have on this.