I am working on a small building that is pursuing LEED CI. The building is comprised of two tenant spaces, office and restaurant/dining. The office space (pursuing LEED CI) is completely finished and occupied while the restaurant/dining is unfinished shell space. The restaurant/dining area does include Base Building HVAC equipment, plumbing and lighting for permit.
I would like to model the building using the Option 2 Baseline method. However, since the restaurant/dining is unfinished I am unsure how to model this space for lighting. Can I assume ASHRAE 90.1 values per Section 11 or should I use the Base Building lighting power densities which only include emergency lighting? Your feedback is welcome.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
September 10, 2014 - 8:31 am
You model it the same as the Baseline allowance.
Ken Williams
3 thumbs up
September 10, 2014 - 9:07 am
Marcus, thank you for your response. Now that I read my question, I'm not sure I was clear in which space I had the question. It is the restaurant/dining space that I was unsure of.
If I use Base Building (Core and Shell) lighting it will only include emergency lighting as the space is not built out. The other option, which I used in the LEED submission is to use the "not to exceed" LPD value listed in the Tenant Lease Agreement.
Thanks again.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5868 thumbs up
September 10, 2014 - 9:26 am
Perhaps it was my answer which was not clear.
Baseline means according to Appendix G/Section 11.
If you have a lighting design or a not to exceed LPD in the lease agreement then you can use those values to claim savings. However, for this credit under Option 2 I think you are supposed to hold all of the non-HVAC modeling inputs neutral (i.e. the same) to determine the HVAC percentage only. The procedure is in the Reference Guide.