Metal Deck Shear Buckling
Metal Deck Shear Buckling
(OP)
Folks,
I have never worked much with calculating the capacities of bare metal decks and have a question.
I was recently reviewing a report where the shear capacity of a CF46 Metal deck (http:/ /www.corus group.com/ file_sourc e/StaticFi les/Busine ss_Units/I nternation al/Comflor %20Decking %20new.pdf) was calculated to be 16.1 MPa (2.335 KSI). It was mentioned that "shear buckling" controlled the capacity.
Where can I find information regarding how to calculate the capacity for metal decks?
I have never worked much with calculating the capacities of bare metal decks and have a question.
I was recently reviewing a report where the shear capacity of a CF46 Metal deck (http:/
Where can I find information regarding how to calculate the capacity for metal decks?
We are Virginia Tech
Go HOKIES






RE: Metal Deck Shear Buckling
As mentioned in a previous post you can also use Hilti's Profis DS program to determine shear strength of metal decks (including output for panel buckling/shear buckling strength) that match the Diaphragm Design Manual. Download here:
http://ww
RE: Metal Deck Shear Buckling
RE: Metal Deck Shear Buckling
RE: Metal Deck Shear Buckling
RE: Metal Deck Shear Buckling
Thanks for the info. Where can I get more information regarding the various failure modes?
I am having a hard time picturing the shear buckling failure. I presume that this is out-of-plane and not in-plane. Shear forces can be traveling parallel to the flute or perpendicular to the flute.
In a direction parallel to the flute, I can see the flutes acting as stiffened columns. How does shear buckling happen in a direction perpendicular to flutes?
Also, if I can figure the equations in the SDI manual for shear buckling (Eq 2.3-3), which gives me a PLF value, can I then use this value and divide by a cross-sectional area / foot and calculate an equivalent shear stress?
I need to compute this because one of the reviewers is calculating a stress value (16.1 MPa / 2.33 KSI) and then asking to provide diaphragm shear stresses (S12 in ETABS) to prove the metal deck works.
We are Virginia Tech
Go HOKIES