We have a 4 story college dormatory building, 113,000 SF. Originally we used the building area method, ASHRAE 90.1-2007 table 9-B allowed for dormitories (1.0W/SF), to determine the W/SF for the baseline energy model, and we used 0.67 W/SF for the proposed energy model which came from lighting calculations. We receive a comment back from review "Lighting saivngs are being taken for residential spaces. Please note that LEED Interpretation 5253 requires that all hard-wired lighting units should be modeled identically in the Baseline and Proposed models, and shall be considered process energy. Refer to this CIR for additional modeling requirements for support area lighting, lighting connected via receptacles, and taking credit for lighting design in the units. Update the Section 1.4 spreadsheet and the model so that the lighting in the living units is modeled identically in the Proposed and Baseline Cases, and provide the lighting power density in W/SF. For the support areas, indicate in the Section 1.4 spreadsheet the method that was used for the interior lighting calcs (ASHRAE 90.1 Section 9.5 (the building area method) or 9.6 (the space-by-space method)), and verify that the baseline values modeled reflect the values from the appropriate table. If using the space-by-space model, please specifically indicate in the Section1.4 spreadsheet the lighting power density per space function as well as the overall weighted average lighting power density for both the Baseline & Porposed Case. Please also verify that the same method (either Building Area Method or Space-by-Space Method) was used for modeling the lighting power in the Baseline and Proposed Case."
Does the LEED Interprettation 5253 from 3/23/2007 that appears to apply to high rise mulit-family condos, also apply to college dormitories?
Is it acceptable for both proposed and baseline models to be set at 1.0 W/SF using the building area method?
Are we unable to take credit for energy savings in LPD as this is a dormitory?