Metal Deck to Concrete Attachment
Metal Deck to Concrete Attachment
(OP)
I have a project that consists of infilling some existing skylights made in a precast T structure with metal decking. From what I can tell I have two options for attaching the metal decking to the existing precast T's
1) attach a continuous bearing plate around the perimeter of the opening and attach the decking to this plate (by shooting the deck to the plate with Hilti fasteners as welding is not allowed)
2) Use Hilti fasteners to attach the deck directly to the precast T.
Option 2 makes the most sense as we will need to do the fastening by some sort of Hilti shot anyway and I think the shot will do less damage to the Precast T. My question is in regards to which of Hilti's fasteners are best suited for this condition?
The project isn't exactly real yet so I am holding off on contacting Hilti. Just trying to do a little leg work before the project moves forward.
1) attach a continuous bearing plate around the perimeter of the opening and attach the decking to this plate (by shooting the deck to the plate with Hilti fasteners as welding is not allowed)
2) Use Hilti fasteners to attach the deck directly to the precast T.
Option 2 makes the most sense as we will need to do the fastening by some sort of Hilti shot anyway and I think the shot will do less damage to the Precast T. My question is in regards to which of Hilti's fasteners are best suited for this condition?
The project isn't exactly real yet so I am holding off on contacting Hilti. Just trying to do a little leg work before the project moves forward.






RE: Metal Deck to Concrete Attachment
Are you thinking that the plate, that you mention, fastened to the bottom of the precast flange? If so I do not recommend fasteners in tension, especially with very little embedment.
Are you thinking to bear the metal deck directly on top of the precast? If so, how will you provide adequate thickness of insulation without a bump in the roof?
Is there any fire rating to consider?
Consider a Z shape member on 4 sides with its top flange bearing on top of the precast so the deck could bear on its bottom flange. Thru bolt precast flange to anchor Z shaped member.
RE: Metal Deck to Concrete Attachment
Dik
RE: Metal Deck to Concrete Attachment
RE: Metal Deck to Concrete Attachment
Dik
RE: Metal Deck to Concrete Attachment
http://www.unistrutohio.com/techtalk/core-concrete...
Dik
RE: Metal Deck to Concrete Attachment
RE: Metal Deck to Concrete Attachment