So, back again to ask another one. We are ever so close to reaching 75% threshold and without having the engineers run daylight models or measure the space I'm trying to pick up any space we can. As I was reviewing the plans again, I realized that we did not count 3 reception areas in the main building lobby that will be staffed full time. The lobby is a massive circulation space and the desks sit in the space. How would we go about calculating the reception area space? would we just calculate the adjacent desk area? or would we split it into a "zone" that is basically the entire column bay at that location? Any advice would be a great help! I have a diagram of what I mean if that would be beneficial. Thank you!
You rely on LEEDuser. Can we rely on you?
LEEDuser is supported by our premium members, not by advertisers.
Go premium for
TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
890 thumbs up
February 22, 2016 - 8:55 am
You would have to show that the reception desks fall within the daylight zone, 2H, from the window wall, then as you noted, apply the amount of glazing from that bay to the reception desk area. Include where the person sits.
It may make the space over daylit since you are not including the lobby. Now lobbies are not considered regularly occupied in the space matrix, but that does not mean that may not have spaces within them that are used for certain things. YOu could include the lobby in the calculations and then just group the reception desk with the lobby space.
Again, the prescriptive method is just for simple spaces and you begin to really muddy up the waters when you try and push it.
Elliot Young
DesignerRinkachung Architecture
1 thumbs up
February 23, 2016 - 6:35 pm
Thanks Todd,
The LEED reference guide does not indicate that the occupied space (the reception desk in this case) needs to be within the 2H zone as you stated. The guide only mentions that a ceiling cannot impede on the angled connection between H and 2H.
TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
890 thumbs up
February 24, 2016 - 8:40 am
If the reception desk is not within the established daylight zone, which is determined by either 2 times the window head height, or using the 63 degree angle, then you cannot say that the reception desk will receive adequate daylight using the prescriptive method. It is just like any other space, any area out of the daylight zone cannot be considered daylit and therefore will go against achievement.
What is the distance from the window wall to the reception desk and what is the window head height?