Lifting Strength for ripping someone in half?

[Da3ggman]

There’s a feat that I think I’ve seen quite a few times in fiction, but can’t seem to find any sort of calc for it: the lifting strength of tearing someone in half.

Well, technically I guess it’d be more so two versions, vertically and horizontally

Here are some examples of what I mean (gore warning, in case it wasn’t obvious):











You get the picture. Just how much would it take for each of the two versions?

 

[TWILIGHT-OP]

Well the closest we have to this feat is this
Ripping of spine calculation. But it shouldn't be far from this value.