Attachment of roof deck
Attachment of roof deck
(OP)
I have a situation that is as follows:
There is a steel tube that is connected to top of concrete wall (tilt-up panels). I have steel tubes that are and perpendicular to the continuous tubes that are on top of the wall. As you can imagine, I have 1.5-steel deck (18 ga) that spans on top of the rolled tubes. The continuous edge of the deck comes up to the radius/corner of the tube that is on top of the wall.
My question here is how do I fasten the deck to the tube so that I can achieve my diaphragm transfer to the wall. I have three options and wonder if anyone has input:
1.Fasten the deck through the corner with #12 screws that are being used to fix the deck to supporting steel. (Concern: full screw engagement may not take place due the corner on the tube).
2.Weld about 1.5 inches of the edge of the deck to the tube.
3.Use weld washer and puddle weld (get as much as we can) the deck to the corner and small vertical portion of the tube.
Any input and other brilliant ideas are welcome.
There is a steel tube that is connected to top of concrete wall (tilt-up panels). I have steel tubes that are and perpendicular to the continuous tubes that are on top of the wall. As you can imagine, I have 1.5-steel deck (18 ga) that spans on top of the rolled tubes. The continuous edge of the deck comes up to the radius/corner of the tube that is on top of the wall.
My question here is how do I fasten the deck to the tube so that I can achieve my diaphragm transfer to the wall. I have three options and wonder if anyone has input:
1.Fasten the deck through the corner with #12 screws that are being used to fix the deck to supporting steel. (Concern: full screw engagement may not take place due the corner on the tube).
2.Weld about 1.5 inches of the edge of the deck to the tube.
3.Use weld washer and puddle weld (get as much as we can) the deck to the corner and small vertical portion of the tube.
Any input and other brilliant ideas are welcome.
Regards,
Lutfi






RE: Attachment of roof deck
The extra angle can be fastened to the tube by welding or mechanical fasteners.
Ron
RE: Attachment of roof deck
DaveAtkins
RE: Attachment of roof deck
I elected to have them provide a continuous 1/8 bent plate on top of the deck that is screwed to the deck and to the tube steel. This provided means to transfer horizontal shear to vertical elements.
The detail was very mean and did not lend it self to adding a shelf angle and it was not accessible to weld.
Regards,
Lutfi
RE: Attachment of roof deck
RE: Attachment of roof deck
I asked the contractor to utilize bent plate that would be screwed to the deck and to the steel tube.
Regards,
Lutfi