Overhung tinted glass on 22@ city, by Gascón 
The City 22 @ building, by Eduard Gascón, uses two different external solar protections: overhung tinted glasses and fixed metal deployé. In this case we are treating the main facades (southeast and northwest) protection: extension of the floor about a meter wide, and overhung tinted glasses.
You can find the case about the fixed deployé in Filt3rs.net: Fixed deployé on 22@ city, by Gascón.
Even it seems that the tinted glass layer covers a great area of the facade, the thickness of the ceiling actually makes only 70cm of glass solar protection be on the glazed part.
Also we have to stress that the gaps between the different glasses allows the entrance of radiation, making uncomfortable illumination drawings on tables and working places.