Water…. on the roof??

So I’m looking out the window at Princess Margaret Hospital and saw this amazing sight. I thought maybe the floods have made it Perth.

My beat guess is that it’s a cooling thing.

Hopefully someone will be able to enlighten me.

Posted via email from Phillip’s posterous

3 comments on “Water…. on the roof??
  1. Elana Swayne says:

    ummm im not sure about that! guess so?

  2. melb says:

    It is a ‘green roof’ and in this case it is probably a method to cool the the building although there could be some other reasons for it. You can read more about green roofs at en.wikipedia.org/wiki/Green_roof

    Hope that helps.

  3. I don’t believe it’s a green roof … looks like a flat roof with a defective drainage system. Sorry.

    And that’s a lot of weight up there too, since a cubic yard of water weighs about a ton.