The LEED Calculator reads: "1. First, determine which regularly occupied areas are considered to be perimeter rooms and which are considered to be non-perimeter rooms. Using the floor plans for your project, superimpose an offset line 15 feet off of the exterior walls. The rooms that are entirely within the region between the exterior wall and the offset line are considered to be perimeter rooms. Those rooms that are not within this region or are intersected by the offset line are non-perimeter rooms." The LEED Reference Guide page 257 defines the perimeter as, "all regularly occupied areas that are 15 fee or less from a perimeter wall, either in whole or in part." I would think that the definition in the LEED Calculator is correct as rooms that extend beyond the 15 foot perimeter are generally large rooms with relatively limited exterior exposure and should not be considered perimeter rooms. Please confirm.
There is a discrepancy between the direction given in the LEED Reference Guide and the LEED Calculator concerning EQ Credit 6.1. The governing language is the Reference Guide; the language in the LEED Calculator (worksheet EQc6) is incorrect. It is intended to read "perimeter area of the building includes all regularly occupied ROOMS that are 15 feet or less from a perimeter wall, either in whole or in part." In buildings designed with an open floor plan, divide the open area into two sub-areas of perimeter and non-perimeter. The actual square footages of perimeter (within 15 FT) and non-perimeter areas should be used in the calculations and not as one individual room. Applicable internationally.