Lighting Power Density Using The Building Area Method

This can be a bit of a grey area. Here is a simplier example, a warehouse. There are two distinct sections so you would use the office LPD and the warehouse LPD in each space. You can apply the same logic to your building to an extent. The way I would think about it is as follows - does the space you are considering using have the same characteristics of a separate stand-alone building like a separate entrance and circulation. Is it distinct enough to use a whole building value for it? I might suggest that in your example the office space, assuming it is the typical faculty and staff offices, would be part of the school/university building type and should not be considered separately. The dining would probably be distinct if it is a dining hall. If it is a cafe then I would not consider it separately. I would guess that the campus police is separate and distinct so this makes sense. Not sure about the exercise center as it would depend on whether it is just an exercise room or something more than that. So I would not go room-by-room. I would look for distinct, separate blocks of space to use the BAM. By the way you typically get more energy savings using the space-by-space method.