Steel Deck Buckling with Loadbearing Precast
Steel Deck Buckling with Loadbearing Precast
(OP)
We have a large (500,000sqft) warehouse with loadbearing precast and steel decking. In areas where the roofing has not been completed along the outside edges, we are seeing the metal deck welds popping due to the thermal expansion of the deck. It would appear that the precast is holding the decking from expanding (continuous trimmer angle welded at 3' o/c to precast).
Has anyone run into this problem? Will it go away once the deck is insulated? Cut trimmer angle to reduce the concentration of the buckling?
Any assistance or information of previous projects with this problem would be greatly appreciated.
Has anyone run into this problem? Will it go away once the deck is insulated? Cut trimmer angle to reduce the concentration of the buckling?
Any assistance or information of previous projects with this problem would be greatly appreciated.






RE: Steel Deck Buckling with Loadbearing Precast
RE: Steel Deck Buckling with Loadbearing Precast
RE: Steel Deck Buckling with Loadbearing Precast
RE: Steel Deck Buckling with Loadbearing Precast
RE: Steel Deck Buckling with Loadbearing Precast
I assume the deck is in the sun with the angle underneath and the precast in the shade.
You mention welds popping and also the deck buckling. How often is the deck buckling? Does it pop the welds in the center of a deck span and then buckle upward?
I am not sure if screws or pins may allow more "slip" to allow the deck to move a little more to accomodate the expansion.
Another idea might be to provide a short intermittent
"deck expansion joint" over a support every so often, perhaps only out 2 to 4 feet or so from the wall. This would have to be detailed properly to still allow the diaphragm to work.
RE: Steel Deck Buckling with Loadbearing Precast