So I know there is a major difference between strongman and powerlifting in terms of their meets and competitions and the rules and regulations they follow, what I'm not clear on is what is power building?

Lame. Its what gym rats call themselves. They are to weak to compete in powerlifting but to lazy to diet for bodybuilding.
Powerbuilding essentially refers to bodybuilders that drive their hypertrophy through some sort of strength training or through progressive overload via increasing rep range or weight. Guys that commonly use this term might train with linear periodiazation, like western periodization, or they might do something like HIT or DC Training. Again, remember that in bodybuilding the primary objective is muscle size and symmetry, whereas in powerlifting it's the numbers you put up. Therefore, the strength is just a means to an end for the powerbuilder, whereas for the powerlifter strength is the end in itself.
Check your form: http://anabolicminds.com/forum/exercise-science/190675-proper-techniques.html
M.Ed. Ex Phys
I'm in week 4 of a Powerbuilding routine. I do a 5x5 type program for strength then have a "light" day for the 3 lifts.
Will be interesting to see how my 1RM results in week 12.
I love the strength from Powerlifting but I want to "look" like I lift.
wrong quote