Too much daylight?!?!

Tyler, Not sure as to exactly what you are asking. So you are saying that the rooms you are simulating will only meet the credit requirements if the amount of glazing is changed? What program are you using? Is your VLT correct? Are all your input parameters correct? Is it only meeting at one time and not the other? Lots of unknowns to your question so if you could be more specific it would help in providing you an answer that will help.

There is no work around for this. There have been complaints about the 500fc limit at these times in trying to meet the requirements. I think the next addenda may be addressing this issue. If you have this submit this soon, this is what i would do. Run a simulation with binds half way down the window and all the way down. You can do this two ways to simulate blinds. Actually create a blind in the model and give it an opacity of 10%. Or you can take half the window area and make it translucent with a 10% VLT. Assuming then that you meet the requirement, make the argument that blinds will be in all those spaces and they will be used. People use blinds to reduce direct sun, especially in schools and an assumption that occupants would not lower the blinds is not accurate. DAYSIM, which is yearly daylight simulation program and calculates daylight autonomy uses blinds in the calculations. The reason that the blind option is there is that we know people use blinds. The trick is figuring out at what level of illuminance do people pull the blinds down. Anyway, state the argument that it is not possible for space with easterly or westerly facing spaces to meet the 500 limit. Automated shades are costly, and again, shades will be installed and used. Have you modeled all exterior buildings and other natural features? There is no barren sight. So if you have buildings or terrain that would help use it. I would on a project that was located very close to the north side of a very large mountain. The sun never impacted the east elevation till late in the morning in the summer time. Without actually modelling the terrain, the project would have issues meeting the 500fc limit even with exterior shading. Good luck

Tyler, the new addenda may help you. It said "Identify the area of the room that has daylight illumination between 10 footcandles and 500 footcandles at both times (9:00 am and 3:00 pm).Spaces that do not meet the daylight illumination levels at both times do not qualify."