Suspended Frame Connection

[newgaengineer]

I am trying to hang a channel frame by suspending it with 1/2" aircraft cable. The architect wants to use a WT shape to be the connector, so essentially the web of the WT will be connected to the cable and the cable will be connected above. My question is what kind of connection to use for the WT to the cable, a yoke end looks like what I want but I can't find capacities for the type of connection I want.

 

[slickdeals]

What provides lateral stability?

 

[newgaengineer]

Part of the frame is underneath a concrete stair. The WT's are going to be attached to embed plates in the stair.