@smokinact, Students are not required to take honors classes in order to be part of the honors Living Learning Community. The Honors College site has a lot of information about housing: http://www.honorscollege.pitt.edu/housing/first-year-honors-housing
Here is a quote from their FAQ regarding who may participate in honors housing:
“You don’t even need to be “Honors Course Eligible” (that is, be an entering First-Year student with at least SAT combined math and critical reading scores of 1400 or above, or a 32 composite ACT score, and be in the top 5 percent of your high school class). However, most students who apply to live in Honors Housing are “Honors Course Eligible” and therefore they can automatically register for honors courses.”
-A Pitt Admissions Staffer