Advice from my life that will be useless to anyone else out there, unless they're actually living my life: Putting four pairs of overalls in the tumble dryer at the same time doesn't really help in the "quiet" department of apartment building life.
(Usually I split 'em up over several loads, but tonight I'm only doing one load, so I figured I'd wash 'em all at once. Bad idea, that. All that metal banging around in there? I may as well have chucked a handful of marbles into the dryer.)