I'm from this school, graduated in 2009. Yes we utilise the roof often. Climbing up, rolling down, for freshmen orientation activities, as a film set for film production, and when it gets dark u'll find lotsa couples spending a romantic evening there. We hold parties there too for birthdays, festive occasions.

We weren't involved in the design of the building.
"Eco Lawn" isn't used, actually the school's maintenance is rather costly i think. The glass windows often crack and need to be changed regularly, due to accidents like being hit by flying birds or some other reasons. People are hired to trim the grass. There are sprinklers installed too. And yea the air conditioning for the entire building costs a bomb, so it's not left running for 24hrs.

Well unfortunately, the students often work there 24hrs, so we bring our own fans at night coz it gets really warm and stuffy with the computers running.

Need more industry professionals for this school, got a shortage of professors.