Hello all,

we're working on a mixed-use building under LEED NC v4, which has in its last floor a residential space with exclusive access to an open roof terrace.

When looking into ASHRAE 90.1-2010 exterior lighting mandatories, we are thinking on classifying this roof terrace as a an special feature area, but there is some confusion as if this space falls under the scope of the standard since section 9.1.1 exception b establishes that lighting within dwelling units is exempt from the section requirements. So my questions would be:

  1. Does the open roof terrace fall under the scope of section 9.4 and must comply with the exterior lighting allowances, even if it is part of the residence beneath it?
  2. If so, would the special features area be the appropriate surface classification?

Thank you,