Those are actually used to service water to the different floors.
Each connection runs to another level of the building. A friend of mine used to design sprinkler safety systems for buildings. I believe I made a similar point to him while waking by a building just like this.
http://modite.com/blog Rebecca Thorman
You’re so smart, Dan. Interesting. I like the look of them nonetheless.. they’re on the way to Cap Centre. I’ll like them even more when they’re on the way to Willy St. Co-Op. ;)
