Glazing ratio

I will not disagree with myself, at least this time!

- It has been ruled (last I heard) that parking buildings are not LEED certifiable. - It is said that the building should concider all parts that are needed for it's function...in your case I was thinking that the parking is not for the offices per say and should probably be excluded. - The WWR rule applies only to surfaces where the proposed design has glazing. You can't put glazing where there isn't any in the proposed design.

Clarification: On its own, an unconditioned, unoccupied parking garage is not eligible for LEED certification. However, a parking garage attached to a conditioned building and within the LEED project boundary may be certified as part of that project. In this case, all costs, materials, and activities associated with the garage must be taken into account for all credits & prerequisites. That said, the window-to-wall ratio only applies to walls that enclose conditioned space, so the walls of an unconditioned garage must be excluded from this calculation. On the other hand, for the energy models, one must include lighting, mechanical ventilation, & other loads associated with the garage, even though it is unconditioned. Is that right, Marcus?

You must model everything that impacts energy use within the LEED Project Boundary. You determine the project boundary within the confines of the MPRs.