So here is a first stab at the roof edge along the north wall of the academic building. I plan to utilize the skin to collect the water runoff and funnel it down to the collection walls and pools throughout the site. I have to provide fire rating so I am trying to decide how I am going to do this. Currently the steel members are exposed with fire proofing spray but I need to provide the insulation at the roof so I may enclose the system and provide the insulation in that zone. Off to bed so I can provide the other 2 details to you tomorrow when I get home from work!
2 comments:
Jaclyn,
The weakest point between wall and roof is the joint. To introduce a water collecting system there has to have compelling reasons. Typically you would use an area drain in the middle of the roof. The insulation layer (2-3") in the wall should connect to the insulation layer in the roof (4-5"). The metal wall can be built up:
interior sheathing, metal stud, exterior sheathing, moisture and vapor barrier, rigid insulation, air space, open or closed metal panels. Or: interior shathing, studs, exterior sheathing, metal panel wall system (centria or equal). Of course with the wall folding into the roof, you might consider a standing seam roof...
(similar to metal panel system)
Check out: http://us.rheinzink.de/23.aspx : you might even find some interesting detail information.
Jaclyn,
Grab a little research on roof drains and see the slopes and rises. Remember the Scuppers required when using flat roofs.
Not only is the joint between the roof and wall the weakest but also most busy by far with flashing, coping, and parapet details.
One material I'm planning on using for a large portion of the exterior skin is an insulated Centria metal panel. this solves a few problems with one crisp and clean system. Check out their site and review some of the details they provide. They have panels to complete all areas of the building including the coping and window insets.
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