Re: OOC
Damage to Objects is p. B483, and Object Hit Points and Structural Damage tables are p. B558.
If I'm trying to break through steel bars, I would definitely be aiming at hinges or something that would allow us to bypass the door without breaking it. (Breaking the door would take a lot more damage.)
For example, typical 1/2" steel bars have DR 11 and HP 22. Based on my 31(5) crushing damage:
DR 11/5 = 2
31 - 2 = 29
Since the object is treated as brittle, that's enough to break off any "limbs" (though, I'm not sure what the door/bar equivalent of a limb is), and—if the object fails its HT roll—enough to disable the mechanism.
If it's not enough, I'll most definitely do that move again. ^_^