Table 4. Conducted design criteria for application in existing office building in Egypt: Author.

Feature	Application
Natural Daylight (Controlled Glare)	• Application of solar sensor exterior shading device over the building façades and interior reflective solar shelves.
Circadian Rhythm	• Providing supplemental light at the height of 45 cm above the work surface.
Natural Ventilation (Interchangeably with HVAC)	• Application of 25% operable window to the office building façades. • Placing a high-level window opposite to the curtain wall windows creates cross ventilation. • Operable skylight to allow natural ventilation
Thermal Comfort	• Application of automatic shading device over the building façades. • Providing two heights of operable windows: ○ Higher operable windows for cold weather. ○ Lower operable window for mild/warm weather. • Placing a high-level window opposite to the curtain wall windows and allowing air access from the skylight creates cross ventilation. • Adding double-glazing glass for the skylight.