[Bob in St. Louis]

Thank you gentlemen for the calculators.
After an exhaustive search, I've not been able to determine modes for a NONrectangular room.
Specifically an "L" shaped room. More specifically, "L" shaped rooms that terminate in open hallways (no doors).
Realising of course, the calculations would have to stop at some point otherwise a fellow would be making calculations based on one entire floor of his house, he'd have to stop somewhere.
Question is,...where would you stop, and how do you calculate an "L" shaped room?
Basically, I'm looking for a DIY way to treat a room (decently) on a bit of a budget.


Bob