ACI Appendix D, shear breakout parallel to edge

[smvk3]

For an embed plate with headed studs, free edges on both sides and the top, with the vertical load away from the top edge, what does the failure plan look like for the shear parallel to edge? Will the failure plan start from the anchor nearest the edge (with half of the vertical load) and spread out? Or will it start from the anchors farthest the edge and spread in the same direction (with the full load)? See attached figure.

 

[Lion06]

smvk-

That is what I'm saying (although, the anchors should always be inside the column cage). One row can't break out without the entire plate breaking out. It's not physically possible without the studs breaking free from the plate.