Hello,
I have a question regarding the glare control strategies. the building that I'm working on came out with a result of 46.2% ASE1000/250 which is quite high (most spaces are overlit). I read that if a glare control strategy is provided the result could be submitted for the credit but should those strategies be explained in a written report or the result value of ASE is not acceptable in the first place? to be more precise if the spaces are overlit lit with more than 10% is applicable to be submitted to the LEED daylight credit but with glare control strategies?
Daniel Glaser
PrincipalLightStanza
LEEDuser Expert
18 thumbs up
July 29, 2022 - 5:38 am
Hi Worood, yes, ASE of 46.2% can indicate it can be visually uncomfortable. Yes, it is acceptable to submit this for LEED approval if you provide glare control strategies (e.g. have blinds or shades installed). As you know, passive shading strategies (e.g. overhangs) will do a better job at glare control since blinds and shades that are lowered for glare may be forgotten about, neglecting the benefit of side-lighting.
Charlene Mendez
HDRJanuary 19, 2023 - 11:09 pm
Worood - did you end up submitting this project to LEED? And if so what did they say to a 46.2% glare level? I appreciate that with v4.1 LEED has lifted the requirment of being under 10% ASE as that was difficult to attain. But I've figured that maybe somewhere in the 20-30% ASE range is where they might draw the limit unless there are special circumstances.
Would be good to get input from everyone what types of ASE levels they are accepting with the v4.1 criteria.