Daylighting Community,
We are working on a small building located on an airport campus called a Ground Transportation Unit (GTU). It building is used to inspect/repair ground vehicles used around the airport. The part where the inspections happen is set up much the way an auto mechanic shop is set up, with large roll up doors that are open whenever anyone is in the space. A large portion of the total area of the area in the building that is considered regularly occupied is this inspection bay, so we would need it to comply. However, there will be no glare control devices on the large garage roll-up doors because there is no glazing - just a large opening. Because doors would be open any time they are working in there, and direct light will be measured on the grid, we would surely exceed ASE levels/ exceed 3,000 lux. Any thoughts on how to work with this situation to still get the daylighting credit?
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TODD REED
Energy Program SpecialistPA DMVA
LEEDuser Expert
889 thumbs up
July 24, 2017 - 8:05 am
If the inspection space is heated and cooled and the doors would be closed under inclement weather or in the winter time then the doors must be down for the simulation. You cannot use the argument of having the bay doors open and have no VLT in the simulations. It would be simulating an outdoor space, and if its not an outdoor space, then the doors must be closed.
If this space is not heated or cooled and is used as an outside space and not used in other credit such as EAp2 or EAc1 in regards to heating and cooling, then you might be able to consider it an outside space. It would be like an outside porch or patio and then you could argue not included as regularly occupied.
You'll probably not earn ASE or even option 2 with such a large opening and no means to control direct sunlight. Its just the reality of it and you would have to design to meet the specifics of the requirement. Toplighting would be a good strategy in this scenario or providing doors with sufficient glazing such as what is used at fire stations.