1. In calculating the gross floor area of an office located in a building with curtain walls, would the measurement be taken from the exterior face of the curtain wall? Or from the boundary of the concrete slab?

2. Would the emergency stairwell of the building be included in the LEED boundary and gross floor area of the office? The client is not paying for this space, so I am unsure whether to include it as part of the office or not.

Thanks for your help!