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Do not try any of the experiments you are about to see at home.

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You heard him.

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Don't do it.

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On this groundbreaking episode of Mythbusters, Adam and Jamie get down and dirty as they

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tackle two viewer tales about toilets.

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First, there's hot air.

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As the guys try to solve a classic and dry dilemma.

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Ah, yeah!

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I do this in every airport I get to.

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Then they flush out which communal cubicle is the most contaminated.

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Aw, this is nasty.

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Meanwhile, Grant Carriantori has a earthquake coming.

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Drop, cover, and hold.

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As they find out if, during the shake of a quake,

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This is terrifying!

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the best survival solution is to dive for the doorway.

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They just been flushed and they freak out the house.

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They freak out the house.

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Who are the Mythbusters?

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Adam Savage.

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Oh, that's science.

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And Jamie Heinemann.

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I'm ready.

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Between them more than 30 years of special effects experience,

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Together with Brad Imahara.

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Holy burning!

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Carri Byron.

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It always makes you feel dangerous.

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And Tori Belichi.

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There's something you don't see every day.

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They don't just tell the Myths, they put them to the test.

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First up, it's time to get down and dirty.

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Hey man, sorry about that.

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I won't ask what kept you.

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Yeah, call of nature.

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But, get this, while I was sitting there,

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I was thinking of a couple of toilet stories that we could test.

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Seriously?

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Yeah, the first one involves those blow dryer jet dryers

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and public restrooms that are supposed to be super sanitary.

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Yeah.

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There's a myth going around that they are in fact less sanitary

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than a regular old paper towel.

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Huh.

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The second one involves testing which stall in a public restroom

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is in fact the cleanest.

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Great, we gotta spend time in a public restroom.

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Do you mind if we start with a hand dryer first?

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Not at all.

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There are over 12 million hand dryers in the US alone.

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So can they really be a hygiene horror show?

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Well, the theory to this myth is two-fold.

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First, dryers supposedly purge fewer pathogens

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than their paper counterparts.

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And second, they can also fan a fog of microbe miasma

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that's a contamination catastrophe.

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But will this myth be hot air?

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This story doesn't make any sense to me.

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How so?

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Well, if you're drying your hands, that implies that you've washed them.

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Absolutely.

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And if you've washed your hands, you've removed all the bacteria.

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So whether a drying method is cleaner than another is irrelevant.

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Right, I see your point.

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But only some people use the full soap and water for washing their hands.

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Some people, they just get their hands wet before drying them off.

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Why don't we test both of those and see which is the proper worst case scenario

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for testing hand towel versus dryer?

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Okay, that works.

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So how do people wash their hands?

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Well, to my way of thinking, there are three things people do in a restroom

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regarding washing their hands.

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The first is, they pretend to wash their hands.

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The second thing people do is get their hands wet, but use no soap.

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The third thing people do, and the thing we all know you should do,

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is wash their hands with soap.

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So first things first, Jamie and I are going to wash our hands using each of those techniques

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and compare the bacterial loads to see if Jamie is in fact right.

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Just washing your hands and soap and water, leave them completely clean.

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And first to go is Adam, who after each cleaning custom,

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hands over to the Heinemann.

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I'm swabbing Adam's hands with a soy-based growth medium.

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So if there's any bacteria on his hands, I'm going to find it.

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Once Jamie's also swabbed for science, it's time for some germ germination.

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Okay, Adam first.

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The process is pretty simple. We've collected our samples,

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we've spread them evenly across soy agar and impetri dish,

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and we've put them in an incubator.

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We're going to let them sit there overnight, we'll come in the morning and see what we've got.

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And sure enough, 24 hours later, let's see what kind of surprise we have.

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Alright, well, the soap wash...

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Not a frickin' nothing.

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Yep, the soap plate's great, which cannot be said of the water wash.

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How come your bacteria are bigger than mine?

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Sometimes that's just the way it works.

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And as for the no wash...

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Oh, gross!

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So the whole reason we were doing this test is because Jamie suggested

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if you wash your hands with soap and water and it eliminates all bacteria,

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who cares about the drying method?

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There's no bacteria to be more or less clean with.

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And it turns out he's right. Look at that.

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Washing our hands with soap and water yielded no bacteria that we could find on this petri dish.

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But when we only pretended to wash our hands, when we rinsed them in water but used no soap,

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check out what we found.

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Ah!

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So this is the method that we are going to use to test the cleanliness of air dryers versus paper towels.

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And the first task for that test is to wrestle a restroom.

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We're here to test whether air-powered hand dryers spread germs around the bathroom more than paper towels do.

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And so of course, to test that, we need a bathroom.

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One bathroom coming up.

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It's all hands on deck, because the guy's set up an experimental setup.

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We call this hiding the crime, see?

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Ugly seam, pretty seam. It's just that easy.

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With a sink. Perfect.

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And a room divider. A blow dryer.

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And a towel dispenser.

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It works.

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They're banged up bathrooms ready to lend this myth a hand.

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Ah, yeah, that was the last paper towel.

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And that looks like you're going to have to get some more.

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Those hands look pretty wet.

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I don't want to tell your business, man, that was the last paper towel.

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Yeah.

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How you doing?

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Yeah.

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Next up, a myth that's shaken, not stirred.

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Okay, so I've got a myth that's ready to rumble.

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All right, what is it?

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The myth is that the best place to be in an earthquake when it hits your house is in the doorway.

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Yeah, that's what they've been telling us since we were kids.

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But I mean, isn't the new technique to get under something and hang on?

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True, that is the current advice.

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But some fans still believe the doorway is the best place to be

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and that is what they want us to put to the test.

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All right, sounds like it's time to shake for science.

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No, not that kind of shake.

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That's not a shake.

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There's no doubt that earthquakes can literally rock your world.

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Oh my God, we're having an earthquake.

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Wait a minute, hold on, hold on.

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But when the earth moves, should you really dive for the doorway

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or will this myth be at fault?

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All right, so I love this story, but I foresee a couple of problems.

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Okay, like what?

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Well, first of all, doesn't the answer depend on the type of house you're in,

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how it was constructed, how old it is?

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True, so why don't we test this on a couple of different kinds of homes?

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First, a newer sort of wooden-style house

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and then maybe an older masonry one.

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Okay, fair enough.

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But then there's a second problem.

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We can't just sit around waiting for an earthquake to happen.

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Well, what we could do is find one of those giant shake tables

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and see if they'd let us borrow it.

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You know what? I know just the place.

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Now, we are testing the myth that during an earthquake

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it is best to stand in a door-dram in a building.

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Now, ever since I was a kid growing up in California,

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that is what they told us.

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But I don't know if that's true.

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So we are here at the California Academy of Sciences

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and they are going to let us use their earthquake shake table

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so we can get to the bottom of this myth.

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Let's hope we don't break it.

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Yeah, breaking this museum masterpiece would be bad news.

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So first, the guys go in for a trial tremor.

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All right, you guys ready for an earthquake?

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Oh my God!

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Layup!

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I want out of here!

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This is a terabyte!

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Thanks to a battery of air bladders,

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the shake table can simulate San Francisco's 1906 nightmare.

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The 15th most energetic earthquake in US history.

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But given its engineering excellence...

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Save the Volvo heads!

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Are they really going to let the mythbusters meddle with it?

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Holy, holy, we're all going to die!

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Well, since you already have a shake table,

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we were talking about making a brick-and-mortar style building

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as well as a wood structure building.

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Do you think maybe we could just use yours

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and shake them till they fall down?

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Well, it's probably a great idea,

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but this is actually a working museum,

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so maybe you have to build your own or something.

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Okay.

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So how does your shake table imitate the forces of an earthquake?

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Well, we don't do the Z-plane, which is up and down.

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We actually do the X and the Y direction.

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And we do that movement

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because that's the strongest motion in an earthquake.

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All right, well, thank you very much for all the information.

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I think we got a lot of building to do.

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That's great.

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So we have visited the California Academy of Sciences

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earthquake table, and it is awesome.

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We're all going to die!

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And basically, we're going to copy it,

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but make it our own mythbusters style.

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The first step with that is to build a model.

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And that is, with all of these cylinders,

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we're going to be pushing and pulling

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just to see what we're getting our subs into.

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With a builder's mind boggling as this...

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Okay, no, it looks like a mess right now,

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but it's totally going to make sense in a minute.

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Grant starting with a proof of concept.

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And if this two by two model shakes...

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Perfect.

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Rattles and rolls.

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The guys will cue the heavy metal

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as they attempt to build its way bigger brother.

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It's a fine adjustment tool.

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So our earthquake shake table concept model is complete.

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Now what this is is a load bearing platform

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supported by casters.

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It's got actuators in the X and Y direction to shake it.

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What we're interested in is what happens to the house

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after it's been collapsed when subjected

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to earthquake magnitude forces.

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Kind of like this.

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That's a lot of work.

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I call that about ten.

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There's no doubt that their shrimp shakers the business.

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But next, it's time to build the beast.

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Coming up next on Miss Blasters,

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where's the safest place to be in an earthquake?

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Is it the doorway or someplace else?

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I'd say someplace else.

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Maybe Arizona.

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Can the humble hand dryer really create a pathogen paradise?

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Or is this myth bathroom baloney?

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To find out, the myth busters have rustled up the recipe.

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I do this in every airport I get to.

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Ah, yeah.

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And it's almost time to get cooking.

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The myth is that drying your hands with an air blower

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is less sanitary than using a paper towel.

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It's not a good idea to use a paper towel.

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It's a good idea to use a paper towel.

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But if you're using a paper towel,

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you can get a lot of air in your hands with an air blower.

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It's less sanitary than using a paper towel.

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In order to test this,

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we'll be putting a bacterial marker on the hands

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of each of our 16 volunteers.

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And then swabbing them both before and after

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they use each of these devices.

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If the myth is true,

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we should see far more bacteria on their hands

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after air drying than after using the paper towel.

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With the volunteers to head,

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next, Janie's special brew can be un-court.

256
00:12:27,500 --> 00:12:29,500
E. coli bacteria.

257
00:12:29,500 --> 00:12:31,500
E. coli can sometimes be harmful,

258
00:12:31,500 --> 00:12:33,500
but this particular strain was designed by a lab

259
00:12:33,500 --> 00:12:35,500
that's completely harmless.

260
00:12:35,500 --> 00:12:38,500
All our participants will be immersing their hands in this stuff,

261
00:12:38,500 --> 00:12:41,500
and it'll create a consistent bacterial load

262
00:12:41,500 --> 00:12:43,500
for all our testing.

263
00:12:43,500 --> 00:12:45,500
It's all hands to the pump.

264
00:12:45,500 --> 00:12:47,500
Now, flip them.

265
00:12:47,500 --> 00:12:49,500
As Janie applies the same amount in the same way

266
00:12:49,500 --> 00:12:51,500
to get the same bacterial load.

267
00:12:51,500 --> 00:12:53,500
Excellent.

268
00:12:53,500 --> 00:12:56,500
And with that, the mother of all washing wipeouts can begin.

269
00:12:56,500 --> 00:12:58,500
First person please.

270
00:12:58,500 --> 00:13:00,500
Volunteer one steps up to get swabbed.

271
00:13:00,500 --> 00:13:02,500
Thank you.

272
00:13:02,500 --> 00:13:04,500
Then washed.

273
00:13:04,500 --> 00:13:06,500
One, one thousand, two, one thousand, three, one thousand.

274
00:13:06,500 --> 00:13:08,500
Then swabbed again.

275
00:13:08,500 --> 00:13:10,500
Left hand again if you would, sir.

276
00:13:10,500 --> 00:13:12,500
Next, he heads for some towel traction,

277
00:13:12,500 --> 00:13:16,500
which is followed by one last swab.

278
00:13:16,500 --> 00:13:18,500
Science.

279
00:13:18,500 --> 00:13:20,500
Next.

280
00:13:20,500 --> 00:13:22,500
And so the pattern repeats.

281
00:13:22,500 --> 00:13:24,500
Thank you very much.

282
00:13:24,500 --> 00:13:26,500
The first two years get sampled before washing.

283
00:13:26,500 --> 00:13:28,500
Excellent.

284
00:13:28,500 --> 00:13:30,500
After washing.

285
00:13:30,500 --> 00:13:32,500
Thank you.

286
00:13:32,500 --> 00:13:34,500
And after towel drying.

287
00:13:34,500 --> 00:13:36,500
Excellent. Thank you.

288
00:13:36,500 --> 00:13:38,500
Thank you.

289
00:13:38,500 --> 00:13:40,500
To say it's a little repetitive is an understatement.

290
00:13:40,500 --> 00:13:42,500
Thank you. Excellent.

291
00:13:42,500 --> 00:13:44,500
Thank you.

292
00:13:44,500 --> 00:13:46,500
But to really see a pathogen pattern,

293
00:13:46,500 --> 00:13:48,500
a solid sample is essential.

294
00:13:48,500 --> 00:13:50,500
Forty-eight pieces of data down.

295
00:13:50,500 --> 00:13:52,500
Nice work.

296
00:13:52,500 --> 00:13:54,500
With forty-eight swabs,

297
00:13:54,500 --> 00:13:56,500
the guys are exactly halfway through.

298
00:13:56,500 --> 00:13:58,500
So it's onwards and upwards.

299
00:13:58,500 --> 00:14:00,500
Here we go again.

300
00:14:00,500 --> 00:14:02,500
With the bacterial load reloaded,

301
00:14:02,500 --> 00:14:04,500
the entire swab mob

302
00:14:04,500 --> 00:14:06,500
hits the washroom once more.

303
00:14:06,500 --> 00:14:08,500
Very strange.

304
00:14:08,500 --> 00:14:10,500
Our test subject group seems to have developed its own ritual.

305
00:14:10,500 --> 00:14:12,500
Like last time.

306
00:14:12,500 --> 00:14:14,500
Next.

307
00:14:14,500 --> 00:14:16,500
The volunteers swab, wash, and swab.

308
00:14:16,500 --> 00:14:18,500
Before this time turning blue with the hand dryer.

309
00:14:18,500 --> 00:14:20,500
But will this different drying device

310
00:14:20,500 --> 00:14:22,500
really let microbes make hay?

311
00:14:22,500 --> 00:14:24,500
Number sixteen.

312
00:14:24,500 --> 00:14:26,500
There it is.

313
00:14:26,500 --> 00:14:28,500
Well, with the final test finally done,

314
00:14:28,500 --> 00:14:30,500
the guys have a hunch.

315
00:14:30,500 --> 00:14:32,500
You know, I am noticing something sort of interesting.

316
00:14:32,500 --> 00:14:34,500
I'm wondering if it's the same thing that I've been noticing.

317
00:14:34,500 --> 00:14:36,500
Well, I'm smelling the odor of the growth medium

318
00:14:36,500 --> 00:14:38,500
a lot more now.

319
00:14:38,500 --> 00:14:40,500
Because the air dryers aerosolizing the stuff, I think.

320
00:14:40,500 --> 00:14:42,500
And I didn't smell it.

321
00:14:42,500 --> 00:14:44,500
These things are so much better.

322
00:14:44,500 --> 00:14:46,500
I'm not sure if it's the same thing that I've been noticing.

323
00:14:46,500 --> 00:14:48,500
I didn't smell it before with the paper towels.

324
00:14:48,500 --> 00:14:50,500
I'll tell you what I've been noticing.

325
00:14:50,500 --> 00:14:52,500
I notice a lot more wet hands.

326
00:14:52,500 --> 00:14:54,500
See, it takes longer to dry your hands with the air dryer.

327
00:14:54,500 --> 00:14:56,500
But people aren't taking that extra time.

328
00:14:56,500 --> 00:14:58,500
Thus, they're coming back here

329
00:14:58,500 --> 00:15:00,500
and their hands are wetter than with the towels.

330
00:15:00,500 --> 00:15:02,500
Both the smell and the clanny hands

331
00:15:02,500 --> 00:15:04,500
suggest that the dryer is not

332
00:15:04,500 --> 00:15:06,500
eliminating pathogens from people's palms.

333
00:15:06,500 --> 00:15:08,500
But what does the data say?

334
00:15:08,500 --> 00:15:10,500
Here it is.

335
00:15:10,500 --> 00:15:12,500
All of our data gathered from 16 test subjects

336
00:15:12,500 --> 00:15:14,500
on both the air dryer and the paper towels.

337
00:15:14,500 --> 00:15:16,500
96 pieces of data in all.

338
00:15:16,500 --> 00:15:18,500
And this isn't everything that we're gathering today.

339
00:15:18,500 --> 00:15:20,500
Because we're not just concerned

340
00:15:20,500 --> 00:15:22,500
about spreading bacteria on people's hands.

341
00:15:22,500 --> 00:15:24,500
We're also going to test the immediate environment

342
00:15:24,500 --> 00:15:26,500
around where they dry them

343
00:15:26,500 --> 00:15:28,500
to see what, if any, bacteria

344
00:15:28,500 --> 00:15:30,500
will spread there as well.

345
00:15:30,500 --> 00:15:32,500
So Adam gets down and dirty

346
00:15:32,500 --> 00:15:34,500
with one final swabbing sequence.

347
00:15:34,500 --> 00:15:36,500
But there's a lot right here.

348
00:15:36,500 --> 00:15:38,500
As he collects 10 samples

349
00:15:38,500 --> 00:15:40,500
from identical points in each of his samples,

350
00:15:40,500 --> 00:15:42,500
he's going to test the amount of bacteria

351
00:15:42,500 --> 00:15:44,500
that he's collecting from his samples

352
00:15:44,500 --> 00:15:46,500
from identical points in each bathroom.

353
00:15:46,500 --> 00:15:48,500
Well, let's get these back to the shop

354
00:15:48,500 --> 00:15:50,500
and start growing some bacteria.

355
00:15:50,500 --> 00:15:52,500
I've got my incubator warm and ready to go.

356
00:15:52,500 --> 00:15:54,500
That sounded creepy. Let's go.

357
00:15:56,500 --> 00:15:58,500
24 hours later, with bacteria

358
00:15:58,500 --> 00:16:00,500
sprouting like there's no tomorrow,

359
00:16:00,500 --> 00:16:02,500
there's a lot.

360
00:16:02,500 --> 00:16:04,500
The guys count every colony

361
00:16:04,500 --> 00:16:06,500
59, 60, 61,

362
00:16:06,500 --> 00:16:08,500
lamb,

363
00:16:08,500 --> 00:16:10,500
in every sample.

364
00:16:10,500 --> 00:16:12,500
Before they're finally ready

365
00:16:12,500 --> 00:16:14,500
to wrap up the results.

366
00:16:16,500 --> 00:16:18,500
Alright. The great hand towel vs.

367
00:16:18,500 --> 00:16:20,500
air dryer debate the results are in.

368
00:16:20,500 --> 00:16:22,500
Are you ready to hear them? Sure. Pretty stunning.

369
00:16:22,500 --> 00:16:24,500
When we had our test subjects

370
00:16:24,500 --> 00:16:26,500
dried our hands with the air dryer,

371
00:16:26,500 --> 00:16:28,500
they were able to reduce the bacterial load on their hands

372
00:16:28,500 --> 00:16:30,500
by 23%. Okay.

373
00:16:30,500 --> 00:16:32,500
But when we had the individuals

374
00:16:32,500 --> 00:16:34,500
dry their hands with the hand towel,

375
00:16:34,500 --> 00:16:36,500
they were able to reduce the bacterial load on their hands by

376
00:16:36,500 --> 00:16:38,500
brrrrrrrrrrpshhh

377
00:16:38,500 --> 00:16:40,500
71%.

378
00:16:40,500 --> 00:16:42,500
Almost three times as much.

379
00:16:42,500 --> 00:16:44,500
That's amazing. But that's for the individual.

380
00:16:44,500 --> 00:16:46,500
What about for the environment?

381
00:16:46,500 --> 00:16:48,500
Well, when we swabbed the area around the air dryer,

382
00:16:48,500 --> 00:16:50,500
we found a total of 41

383
00:16:50,500 --> 00:16:52,500
colonies of bacteria.

384
00:16:52,500 --> 00:16:54,500
When we swabbed the area around the hand towel,

385
00:16:54,500 --> 00:16:56,500
we found...furry.

386
00:16:56,500 --> 00:16:58,500
Which yet again indicates that the air dryer

387
00:16:58,500 --> 00:17:00,500
is spreading more bacteria than the hand towels.

388
00:17:00,500 --> 00:17:02,500
Indeed they do. This myth is totally

389
00:17:02,500 --> 00:17:04,500
confirmed. The claims of the air dryers

390
00:17:04,500 --> 00:17:06,500
just don't hold up. It's just hot air.

391
00:17:06,500 --> 00:17:08,500
F***

392
00:17:08,500 --> 00:17:10,500
F***

393
00:17:10,500 --> 00:17:12,500
F***

394
00:17:12,500 --> 00:17:14,500
F***

395
00:17:14,500 --> 00:17:16,500
F***

396
00:17:16,500 --> 00:17:18,500
When an earthquake quivers,

397
00:17:18,500 --> 00:17:20,500
are you better off de-camping

398
00:17:20,500 --> 00:17:22,500
in the doorway?

399
00:17:22,500 --> 00:17:24,500
The small scale is done now it is time

400
00:17:24,500 --> 00:17:26,500
to move on to the full scale shake

401
00:17:26,500 --> 00:17:28,500
table. Now the construction of this is going to

402
00:17:28,500 --> 00:17:30,500
be a bit of a challenge.

403
00:17:30,500 --> 00:17:32,500
The dimensions will be 11

404
00:17:32,500 --> 00:17:34,500
by 13 feet. We're going to be using

405
00:17:34,500 --> 00:17:36,500
square steel 2

406
00:17:36,500 --> 00:17:38,500
with half inch thick wall.

407
00:17:38,500 --> 00:17:40,500
I think we're good.

408
00:17:40,500 --> 00:17:42,500
This stuff is strong. It has to be

409
00:17:42,500 --> 00:17:44,500
strong because once we start building

410
00:17:44,500 --> 00:17:46,500
buildings on top of it and shaking them down,

411
00:17:46,500 --> 00:17:48,500
this thing has to withstand thousands

412
00:17:48,500 --> 00:17:50,500
of pounds of force.

413
00:17:50,500 --> 00:17:52,500
Their steel is clearly the real deal.

414
00:17:52,500 --> 00:17:54,500
There's about 5,000

415
00:17:54,500 --> 00:17:56,500
pounds of steel here and according to my

416
00:17:56,500 --> 00:17:58,500
back,

417
00:17:58,500 --> 00:18:00,500
that's a lot.

418
00:18:00,500 --> 00:18:02,500
And once the top sides

419
00:18:02,500 --> 00:18:04,500
are welded tight,

420
00:18:04,500 --> 00:18:06,500
cue the forklift

421
00:18:06,500 --> 00:18:08,500
Foxtrot.

422
00:18:12,500 --> 00:18:14,500
With the frame finally flipped

423
00:18:14,500 --> 00:18:16,500
out, the guys make short work

424
00:18:16,500 --> 00:18:18,500
of a long job.

425
00:18:18,500 --> 00:18:20,500
And yet still, the build has barely

426
00:18:20,500 --> 00:18:22,500
just begun.

427
00:18:22,500 --> 00:18:24,500
Did you hear that?

428
00:18:24,500 --> 00:18:26,500
That's an earthquake coming.

429
00:18:26,500 --> 00:18:28,500
We've now completed the heavy-duty

430
00:18:28,500 --> 00:18:30,500
steel structure which is going to be the base

431
00:18:30,500 --> 00:18:32,500
of our shake table. Now we need to

432
00:18:32,500 --> 00:18:34,500
build what shakes it. For that, we're building

433
00:18:34,500 --> 00:18:36,500
eight monuments. These are pneumatic

434
00:18:36,500 --> 00:18:38,500
springs or air springs. Usually

435
00:18:38,500 --> 00:18:40,500
they're used in semi-truck

436
00:18:40,500 --> 00:18:42,500
trailer beds so that it can balance loads

437
00:18:42,500 --> 00:18:44,500
or provide some extra spring.

438
00:18:44,500 --> 00:18:46,500
For us, they're going to be on the edges

439
00:18:46,500 --> 00:18:48,500
of our shake table and they're going to

440
00:18:48,500 --> 00:18:50,500
provide 10,000 pounds of force each

441
00:18:50,500 --> 00:18:52,500
with eight of them, that's 80,000

442
00:18:52,500 --> 00:18:54,500
pounds.

443
00:18:54,500 --> 00:18:56,500
That ought to shake things up.

444
00:18:56,500 --> 00:18:58,500
Now this one's finished and we've got seven more to go.

445
00:19:00,500 --> 00:19:02,500
The consents pneumatics will help shake

446
00:19:02,500 --> 00:19:04,500
the quake back and forth.

447
00:19:04,500 --> 00:19:06,500
And once they're

448
00:19:06,500 --> 00:19:08,500
secured into place

449
00:19:10,500 --> 00:19:12,500
and attached to the frame

450
00:19:12,500 --> 00:19:14,500
the

451
00:19:14,500 --> 00:19:16,500
don't you crack the loop.

452
00:19:16,500 --> 00:19:18,500
The guys have one more trick up their sleeves.

453
00:19:20,500 --> 00:19:22,500
These are the air casters.

454
00:19:22,500 --> 00:19:24,500
This is the most exciting part.

455
00:19:24,500 --> 00:19:26,500
Remember the shake table at the museum.

456
00:19:26,500 --> 00:19:28,500
Their shake table was able to move on an

457
00:19:28,500 --> 00:19:30,500
X-Y plane.

458
00:19:30,500 --> 00:19:32,500
Ours is going to be even better.

459
00:19:32,500 --> 00:19:34,500
Ours is going to be able to move on a Z plane as well.

460
00:19:34,500 --> 00:19:36,500
How?

461
00:19:36,500 --> 00:19:38,500
With these. These are Aragou air casters

462
00:19:38,500 --> 00:19:40,500
and they're able to lift 8,000

463
00:19:40,500 --> 00:19:42,500
pounds each.

464
00:19:42,500 --> 00:19:44,500
Now we're going to have six of them. Four in each corner

465
00:19:44,500 --> 00:19:46,500
and two in the middle. These are going to

466
00:19:46,500 --> 00:19:48,500
allow our shake table to not only move

467
00:19:48,500 --> 00:19:50,500
side to side, forwards and backwards

468
00:19:50,500 --> 00:19:52,500
but also up and down.

469
00:19:52,500 --> 00:19:54,500
So let's face it, it's worth doing.

470
00:19:54,500 --> 00:19:56,500
It's worth overdoing.

471
00:19:56,500 --> 00:19:58,500
And the one thing that still needs overdoing

472
00:20:00,500 --> 00:20:02,500
I've got to show them who's boss.

473
00:20:02,500 --> 00:20:04,500
is to put in place the plumbing.

474
00:20:04,500 --> 00:20:06,500
It's pretty manly work.

475
00:20:06,500 --> 00:20:08,500
Putting the man in the manifold.

476
00:20:10,500 --> 00:20:12,500
By nightfall, it's finally ready for a test.

477
00:20:14,500 --> 00:20:16,500
After hours of designing

478
00:20:16,500 --> 00:20:18,500
and days of heavy building,

479
00:20:18,500 --> 00:20:20,500
the earthquake table is finally done.

480
00:20:20,500 --> 00:20:22,500
Now behind me is a fleet of air compressors.

481
00:20:22,500 --> 00:20:24,500
Now it's important that we have a lot of air

482
00:20:24,500 --> 00:20:26,500
for this table to work and I'll show you why.

483
00:20:28,500 --> 00:20:30,500
Now compressed air will be moving through

484
00:20:30,500 --> 00:20:32,500
these hoses into this manifold

485
00:20:32,500 --> 00:20:34,500
where it will be distributed to six separate air casters.

486
00:20:34,500 --> 00:20:36,500
Now when those air casters inflate

487
00:20:36,500 --> 00:20:38,500
the whole table will lift up

488
00:20:38,500 --> 00:20:40,500
and it will actually ride on a cushion of air.

489
00:20:40,500 --> 00:20:42,500
Our second source of air

490
00:20:42,500 --> 00:20:44,500
is going to come through these hoses,

491
00:20:44,500 --> 00:20:46,500
through these pipes and to these air bladders.

492
00:20:46,500 --> 00:20:48,500
They're going to control the shake and so the table stops

493
00:20:48,500 --> 00:20:50,500
a quaken.

494
00:20:50,500 --> 00:20:52,500
Now all the valves that control

495
00:20:52,500 --> 00:20:54,500
the air bladders are going to this bank of relays.

496
00:20:54,500 --> 00:20:56,500
It's just going to this microcontroller

497
00:20:56,500 --> 00:20:58,500
and this computer.

498
00:20:58,500 --> 00:21:00,500
We can control each of those valves separately

499
00:21:00,500 --> 00:21:02,500
so that we can get exactly

500
00:21:02,500 --> 00:21:04,500
the magnitude of earthquake that we need.

501
00:21:04,500 --> 00:21:06,500
You want to see it?

502
00:21:06,500 --> 00:21:08,500
Fire up the compressors!

503
00:21:08,500 --> 00:21:10,500
It's time to put the sucker to work.

504
00:21:12,500 --> 00:21:14,500
With the air on, the guys are going to kick off.

505
00:21:14,500 --> 00:21:16,500
Charging the air casters.

506
00:21:16,500 --> 00:21:18,500
With the up-down test.

507
00:21:18,500 --> 00:21:20,500
Here we go in three, two, one.

508
00:21:22,500 --> 00:21:24,500
It's working!

509
00:21:24,500 --> 00:21:26,500
First impressions are good.

510
00:21:26,500 --> 00:21:28,500
Second impressions

511
00:21:28,500 --> 00:21:30,500
It's like in the earthquake!

512
00:21:30,500 --> 00:21:32,500
Are even better.

513
00:21:32,500 --> 00:21:34,500
It's working!

514
00:21:34,500 --> 00:21:36,500
Dude, alright, so that's the up and down.

515
00:21:36,500 --> 00:21:38,500
Alright, let's see what the side to side can do.

516
00:21:38,500 --> 00:21:40,500
Okay, you guys ready?

517
00:21:40,500 --> 00:21:42,500
Three, two, one!

518
00:21:42,500 --> 00:21:44,500
It's working!

519
00:21:44,500 --> 00:21:46,500
Dude, alright, so that's the up and down.

520
00:21:46,500 --> 00:21:48,500
Alright, let's see what the side to side can do.

521
00:21:48,500 --> 00:21:50,500
Okay, you guys ready?

522
00:21:50,500 --> 00:21:52,500
Three, two, one!

523
00:22:00,500 --> 00:22:02,500
It's a six point on the awesome scale!

524
00:22:04,500 --> 00:22:06,500
Hey, that's the truth.

525
00:22:06,500 --> 00:22:08,500
With the air casters controlling the up and down

526
00:22:08,500 --> 00:22:10,500
and the pneumatic cylinders

527
00:22:10,500 --> 00:22:12,500
pumping iron back and forth,

528
00:22:12,500 --> 00:22:14,500
the biggest build in Mythluster's history

529
00:22:14,500 --> 00:22:16,500
is ready to rock.

530
00:22:16,500 --> 00:22:18,500
This is an amazing success!

531
00:22:18,500 --> 00:22:20,500
Now all we need to do is build a house

532
00:22:20,500 --> 00:22:22,500
and then see if we can shake it down.

533
00:22:22,500 --> 00:22:24,500
This is awesome!

534
00:22:24,500 --> 00:22:26,500
On the up-down test of Mythluster

535
00:22:26,500 --> 00:22:28,500
find out what it's going to take

536
00:22:28,500 --> 00:22:30,500
and shake the house down!

537
00:22:30,500 --> 00:22:32,500
Oh, he's happy!

538
00:22:32,500 --> 00:22:34,500
What else?

539
00:22:34,500 --> 00:22:36,500
And Adam and Jamie cut the crap.

540
00:22:36,500 --> 00:22:38,500
Oh man, someone here didn't flush.

541
00:22:38,500 --> 00:22:40,500
That's gross.

542
00:22:46,500 --> 00:22:48,500
There's no restroom respite

543
00:22:48,500 --> 00:22:50,500
because next up

544
00:22:50,500 --> 00:22:52,500
is it all for one and one for all?

545
00:22:52,500 --> 00:22:54,500
Next up in Toilet Trouble

546
00:22:54,500 --> 00:22:56,500
we have a myth that in a bathroom

547
00:22:56,500 --> 00:22:58,500
or public restroom of multiple stalls

548
00:22:58,500 --> 00:23:00,500
the stall closest to the door

549
00:23:00,500 --> 00:23:02,500
is going to be the cleanest

550
00:23:02,500 --> 00:23:04,500
and also least used stall.

551
00:23:04,500 --> 00:23:06,500
Why would that be the case?

552
00:23:06,500 --> 00:23:08,500
I personally avoid that stall

553
00:23:08,500 --> 00:23:10,500
because I'm assuming everyone else has jumped in it

554
00:23:10,500 --> 00:23:12,500
and it's probably filthy.

555
00:23:12,500 --> 00:23:14,500
Well, I'd imagine some people also want more privacy

556
00:23:14,500 --> 00:23:16,500
so they'd go to the other end of the bathroom.

557
00:23:16,500 --> 00:23:18,500
In either case, the myth is the same

558
00:23:18,500 --> 00:23:20,500
that people for whatever reason

559
00:23:20,500 --> 00:23:22,500
are avoiding the stall closest to the door

560
00:23:22,500 --> 00:23:24,500
and thus it unexpectedly is a bastion

561
00:23:24,500 --> 00:23:26,500
of cleanliness in a public restroom.

562
00:23:26,500 --> 00:23:28,500
Well, I guess it's time to get down and dirty.

563
00:23:28,500 --> 00:23:30,500
Nice pun!

564
00:23:30,500 --> 00:23:32,500
Restroom routines waver widely.

565
00:23:32,500 --> 00:23:34,500
But is it true that we all

566
00:23:34,500 --> 00:23:36,500
tend to steer clear of stall one?

567
00:23:36,500 --> 00:23:38,500
Making it the freshest faucet of all.

568
00:23:38,500 --> 00:23:40,500
I'm going to go out on a limb and say

569
00:23:40,500 --> 00:23:42,500
I think the plan here is pretty straight.

570
00:23:42,500 --> 00:23:44,500
Can you guess what I'm thinking?

571
00:23:44,500 --> 00:23:46,500
Find a public restroom, stake it out,

572
00:23:46,500 --> 00:23:48,500
count how many people you use, what stalls?

573
00:23:48,500 --> 00:23:50,500
Yes, but we'd also use some of our

574
00:23:50,500 --> 00:23:52,500
bacteriological testing knowledge

575
00:23:52,500 --> 00:23:54,500
to measure how dirty each of the stalls

576
00:23:54,500 --> 00:23:56,500
is at the end of our test.

577
00:23:56,500 --> 00:23:58,500
Sure, why not?

578
00:23:58,500 --> 00:24:00,500
How hard could that be?

579
00:24:00,500 --> 00:24:02,500
Over the years we've been doing mythbusters

580
00:24:02,500 --> 00:24:04,500
we've been granted access to props and locations

581
00:24:04,500 --> 00:24:06,500
to do our experiments that,

582
00:24:06,500 --> 00:24:08,500
well, when we first started

583
00:24:08,500 --> 00:24:10,500
would have seemed completely impossible.

584
00:24:10,500 --> 00:24:12,500
We were even allowed to get behind

585
00:24:12,500 --> 00:24:14,500
and test the power of hurricane force winds.

586
00:24:14,500 --> 00:24:16,500
We were even allowed to sink

587
00:24:16,500 --> 00:24:18,500
a boat in the protected wildlife sanctuary

588
00:24:18,500 --> 00:24:20,500
of Monterey Bay

589
00:24:20,500 --> 00:24:22,500
and then to raise it back up again

590
00:24:22,500 --> 00:24:24,500
with 30,000 ping pong balls.

591
00:24:24,500 --> 00:24:26,500
But finding a public restroom

592
00:24:26,500 --> 00:24:28,500
with four stalls that we could

593
00:24:28,500 --> 00:24:30,500
film and test in has proven to be

594
00:24:30,500 --> 00:24:32,500
one of the biggest bears we've ever had to tackle.

595
00:24:32,500 --> 00:24:34,500
Luckily, we believe we found the bathroom

596
00:24:34,500 --> 00:24:36,500
and it's here at the Cal Maritime Academy.

597
00:24:36,500 --> 00:24:38,500
Not only is it one of the best Maritime Academies

598
00:24:38,500 --> 00:24:40,500
in the country, but they've got a bathroom

599
00:24:40,500 --> 00:24:42,500
that they're willing to let us film in

600
00:24:42,500 --> 00:24:44,500
and I think it's going to be perfect.

601
00:24:44,500 --> 00:24:46,500
It's not often a public bathroom can be perfect,

602
00:24:46,500 --> 00:24:48,500
but for this stall tall tale,

603
00:24:48,500 --> 00:24:50,500
this restroom rules.

604
00:24:50,500 --> 00:24:52,500
Now please bear with us.

605
00:24:52,500 --> 00:24:54,500
There's only so many interesting ways you can film a restroom,

606
00:24:54,500 --> 00:24:56,500
but the basic myth is this.

607
00:24:56,500 --> 00:24:58,500
That in a public restroom, stall number one,

608
00:24:58,500 --> 00:25:00,500
that is the one closest to the door,

609
00:25:00,500 --> 00:25:02,500
is both the cleanest and the least used

610
00:25:02,500 --> 00:25:04,500
because of two assumptions people make

611
00:25:04,500 --> 00:25:06,500
about human behavior.

612
00:25:06,500 --> 00:25:08,500
The first one is that people assume

613
00:25:08,500 --> 00:25:10,500
because of its proximity to the door,

614
00:25:10,500 --> 00:25:12,500
the first stall is the most used

615
00:25:12,500 --> 00:25:14,500
and therefore the dirtiest

616
00:25:14,500 --> 00:25:16,500
and therefore they pick another stall.

617
00:25:16,500 --> 00:25:18,500
The second assumption people make

618
00:25:18,500 --> 00:25:20,500
is that people will avoid the first stall

619
00:25:20,500 --> 00:25:22,500
and go all the way to the end

620
00:25:22,500 --> 00:25:24,500
because they want privacy.

621
00:25:24,500 --> 00:25:26,500
Auditory privacy.

622
00:25:26,500 --> 00:25:28,500
Either way, the net result is the same.

623
00:25:28,500 --> 00:25:30,500
Is the first stall the least used

624
00:25:30,500 --> 00:25:32,500
and therefore the cleanest?

625
00:25:32,500 --> 00:25:34,500
That's what we're going to test.

626
00:25:34,500 --> 00:25:36,500
These guys need two dollars of data

627
00:25:36,500 --> 00:25:38,500
that they'll collect over four days.

628
00:25:38,500 --> 00:25:40,500
Bathroom bacteria

629
00:25:40,500 --> 00:25:42,500
and U-Bend usage.

630
00:25:44,500 --> 00:25:46,500
A mechanical door clicker

631
00:25:46,500 --> 00:25:48,500
is a simple solution for

632
00:25:48,500 --> 00:25:50,500
logging toilet traffic.

633
00:25:50,500 --> 00:25:52,500
Perfect.

634
00:25:52,500 --> 00:25:54,500
And with all four installed

635
00:25:54,500 --> 00:25:56,500
on the stalls,

636
00:25:56,500 --> 00:25:58,500
next it's time to cut the crap.

637
00:25:58,500 --> 00:26:00,500
I went as Adam and Jamie,

638
00:26:00,500 --> 00:26:02,500
along with some mean cleaners,

639
00:26:02,500 --> 00:26:04,500
and we're going to use the

640
00:26:04,500 --> 00:26:06,500
bathroom of bacteria blitz.

641
00:26:06,500 --> 00:26:08,500
For us to record the amount of bacteria

642
00:26:08,500 --> 00:26:10,500
in each stall, we need to start with a clean slate.

643
00:26:10,500 --> 00:26:12,500
That's what all this cleaning is about.

644
00:26:12,500 --> 00:26:14,500
Eliminating traces of bacteria

645
00:26:14,500 --> 00:26:16,500
so any colonies we find at the end

646
00:26:16,500 --> 00:26:18,500
of the experiment have all grown

647
00:26:18,500 --> 00:26:20,500
during the test and not before.

648
00:26:20,500 --> 00:26:22,500
That's the theory.

649
00:26:22,500 --> 00:26:24,500
And once the restroom is a pathogen-free zone,

650
00:26:24,500 --> 00:26:26,500
the experiment can begin.

651
00:26:26,500 --> 00:26:28,500
That's it. All the counters are zeroed.

652
00:26:28,500 --> 00:26:30,500
Well, everything's been swapped.

653
00:26:30,500 --> 00:26:32,500
All right.

654
00:26:32,500 --> 00:26:34,500
So, let the crapping commence.

655
00:26:34,500 --> 00:26:36,500
Ha!

656
00:26:36,500 --> 00:26:38,500
Ha!

657
00:26:38,500 --> 00:26:40,500
Okay, so by now,

658
00:26:40,500 --> 00:26:42,500
you know that we are testing the myth that standing

659
00:26:42,500 --> 00:26:44,500
in a doorway is the best place to be during an earthquake.

660
00:26:44,500 --> 00:26:46,500
Now, we learned from the California Academy of Sciences

661
00:26:46,500 --> 00:26:48,500
that the origin of this myth

662
00:26:48,500 --> 00:26:50,500
is possibly in unreinforced

663
00:26:50,500 --> 00:26:52,500
masonry buildings.

664
00:26:52,500 --> 00:26:54,500
Now, it's a common type of building around the world

665
00:26:54,500 --> 00:26:56,500
as well as in historical buildings in the United States.

666
00:26:56,500 --> 00:26:58,500
So, we found ourselves some skilled masons.

667
00:26:58,500 --> 00:27:00,500
They're going to build a structure on our shake table,

668
00:27:00,500 --> 00:27:02,500
and once it's cured, we're going to try to shake it down.

669
00:27:02,500 --> 00:27:04,500
Yep.

670
00:27:04,500 --> 00:27:06,500
For test one,

671
00:27:06,500 --> 00:27:08,500
the mythbusters don't need to be movers

672
00:27:08,500 --> 00:27:10,500
or shakers.

673
00:27:10,500 --> 00:27:12,500
Because this house is being

674
00:27:12,500 --> 00:27:14,500
time-lapsed into place by experts.

675
00:27:14,500 --> 00:27:16,500
And once the concrete's left

676
00:27:16,500 --> 00:27:18,500
to cure for three whole weeks,

677
00:27:18,500 --> 00:27:20,500
it's time to decorate.

678
00:27:20,500 --> 00:27:22,500
Ha!

679
00:27:22,500 --> 00:27:24,500
Well, I really like what you did with the place.

680
00:27:24,500 --> 00:27:26,500
I'm going to try to make sure that

681
00:27:26,500 --> 00:27:28,500
I'm not going to get a break.

682
00:27:28,500 --> 00:27:30,500
Well, I really like what you did with the place, Grant.

683
00:27:30,500 --> 00:27:32,500
You really made this a home.

684
00:27:32,500 --> 00:27:34,500
For the subsequent shakedown,

685
00:27:34,500 --> 00:27:36,500
it's important that the inside

686
00:27:36,500 --> 00:27:38,500
is as realistic as the outside.

687
00:27:38,500 --> 00:27:40,500
And that means furniture,

688
00:27:40,500 --> 00:27:42,500
knick-knacks,

689
00:27:42,500 --> 00:27:44,500
mannequins.

690
00:27:44,500 --> 00:27:46,500
I'm placing three mannequins around the room,

691
00:27:46,500 --> 00:27:48,500
one underneath the table,

692
00:27:48,500 --> 00:27:50,500
one just standing in the room,

693
00:27:50,500 --> 00:27:52,500
and one standing in the doorway.

694
00:27:52,500 --> 00:27:54,500
Now, for this myth to be confirmed,

695
00:27:54,500 --> 00:27:56,500
I'm placing a cellarometer in the head

696
00:27:56,500 --> 00:27:58,500
and I'm placing shock watches around their bodies.

697
00:27:58,500 --> 00:28:00,500
Very muscular.

698
00:28:00,500 --> 00:28:02,500
Rock hard clubs.

699
00:28:02,500 --> 00:28:04,500
So, I'm no Mason, but I did observe

700
00:28:04,500 --> 00:28:06,500
how this building was being built.

701
00:28:06,500 --> 00:28:08,500
And it conforms to how you would have built something

702
00:28:08,500 --> 00:28:10,500
in pre-code, olden days.

703
00:28:10,500 --> 00:28:12,500
Which means that there are strong points

704
00:28:12,500 --> 00:28:14,500
and weak points.

705
00:28:14,500 --> 00:28:16,500
Now, these corners are one of the strongest parts

706
00:28:16,500 --> 00:28:18,500
of the building. There's rebar going all the way

707
00:28:18,500 --> 00:28:20,500
up to the ceiling with poured concrete.

708
00:28:20,500 --> 00:28:22,500
Same thing for the door.

709
00:28:22,500 --> 00:28:24,500
So, this is the arch. That's all solid.

710
00:28:24,500 --> 00:28:26,500
So, by the end of this, my personal opinion

711
00:28:26,500 --> 00:28:28,500
is that the only thing less standing

712
00:28:28,500 --> 00:28:30,500
is going to be this wall with the front door.

713
00:28:30,500 --> 00:28:32,500
So, Grant's money is on the myth.

714
00:28:32,500 --> 00:28:34,500
But before the earth moves,

715
00:28:34,500 --> 00:28:36,500
Excuse me.

716
00:28:36,500 --> 00:28:38,500
There's one final piece of the puzzle.

717
00:28:38,500 --> 00:28:40,500
Some U.S.

718
00:28:40,500 --> 00:28:42,500
geological survey sensors

719
00:28:42,500 --> 00:28:44,500
that will record the magnitude

720
00:28:44,500 --> 00:28:46,500
of their tremor.

721
00:28:46,500 --> 00:28:48,500
Music

722
00:28:50,500 --> 00:28:52,500
Alright, we are set to shake

723
00:28:52,500 --> 00:28:54,500
the building down.

724
00:28:54,500 --> 00:28:56,500
Okay.

725
00:28:56,500 --> 00:28:58,500
5, 4, 3,

726
00:28:58,500 --> 00:29:00,500
2, 1.

727
00:29:04,500 --> 00:29:06,500
Wow.

728
00:29:06,500 --> 00:29:08,500
Wow.

729
00:29:08,500 --> 00:29:10,500
The scandal here is going crazy.

730
00:29:10,500 --> 00:29:12,500
Wow.

731
00:29:12,500 --> 00:29:14,500
That is a lot of power.

732
00:29:14,500 --> 00:29:16,500
To get go, their quake is quivering

733
00:29:16,500 --> 00:29:18,500
up, down, left,

734
00:29:18,500 --> 00:29:20,500
and right with the same power

735
00:29:20,500 --> 00:29:22,500
as San Francisco's 1906 shock.

736
00:29:24,500 --> 00:29:26,500
And yet this olden day style

737
00:29:26,500 --> 00:29:28,500
building is holding firm.

738
00:29:30,500 --> 00:29:32,500
But not for long.

739
00:29:32,500 --> 00:29:34,500
Get the window.

740
00:29:40,500 --> 00:29:42,500
After just 15 seconds,

741
00:29:42,500 --> 00:29:44,500
the sidewall is already in pieces.

742
00:29:44,500 --> 00:29:46,500
And mannequin line is also

743
00:29:46,500 --> 00:29:48,500
down for the count.

744
00:29:48,500 --> 00:29:50,500
Oh my God.

745
00:29:52,500 --> 00:29:54,500
The back wall is coming.

746
00:29:54,500 --> 00:29:56,500
That is terrifying.

747
00:29:56,500 --> 00:29:58,500
Moments later, the back wall.

748
00:29:58,500 --> 00:30:00,500
And then the other side wall

749
00:30:00,500 --> 00:30:02,500
follows soon.

750
00:30:04,500 --> 00:30:06,500
Whoa.

751
00:30:06,500 --> 00:30:08,500
This is terrifying.

752
00:30:08,500 --> 00:30:10,500
I think it's going to go.

753
00:30:10,500 --> 00:30:12,500
I think the car is going to go.

754
00:30:12,500 --> 00:30:14,500
I think we can see the car in the

755
00:30:14,500 --> 00:30:16,500
car.

756
00:30:16,500 --> 00:30:18,500
And I think it's going to come.

757
00:30:18,500 --> 00:30:20,500
I think it's going to go.

758
00:30:20,500 --> 00:30:22,500
I think there is going to be a

759
00:30:22,500 --> 00:30:24,500
carnage everywhere except

760
00:30:24,500 --> 00:30:26,500
incredibly for the doorway.

761
00:30:26,500 --> 00:30:28,500
All right.

762
00:30:28,500 --> 00:30:30,500
So far though, the doorway does seem

763
00:30:30,500 --> 00:30:32,500
to be the safest place to stand.

764
00:30:32,500 --> 00:30:34,500
Yeah, I mean, given all your other

765
00:30:34,500 --> 00:30:36,500
choices in this situation,

766
00:30:36,500 --> 00:30:38,500
I think the doorway's got it.

767
00:30:38,500 --> 00:30:40,500
And the door itself gives up.

768
00:30:40,500 --> 00:30:42,500
And with that, the conclusions

769
00:30:42,500 --> 00:30:44,500
are quick to follow.

770
00:30:44,500 --> 00:30:46,500
Well, I think it's pretty clear.

771
00:30:46,500 --> 00:30:48,500
I mean, the only wall still standing

772
00:30:48,500 --> 00:30:50,500
is the one with the door.

773
00:30:50,500 --> 00:30:52,500
And the only mannequin that didn't sustain

774
00:30:52,500 --> 00:30:54,500
any injury is the one standing in the doorway.

775
00:30:54,500 --> 00:30:56,500
Yeah, he looks all right other than

776
00:30:56,500 --> 00:30:58,500
being whacked by the door a few times.

777
00:30:58,500 --> 00:31:00,500
I mean, I think we can call this one

778
00:31:00,500 --> 00:31:02,500
plausible for this kind of construction.

779
00:31:02,500 --> 00:31:04,500
Yeah, it's totally plausible.

780
00:31:04,500 --> 00:31:06,500
So this is a pretty fantastic result.

781
00:31:06,500 --> 00:31:08,500
It's intact. Everybody inside the house,

782
00:31:08,500 --> 00:31:10,500
totally devastated.

783
00:31:10,500 --> 00:31:12,500
The guy in the doorway, totally fine.

784
00:31:12,500 --> 00:31:14,500
But there are two caveats.

785
00:31:14,500 --> 00:31:16,500
The first one is that this is only good

786
00:31:16,500 --> 00:31:18,500
for a certain amount of time.

787
00:31:18,500 --> 00:31:20,500
If your earthquake lasts for several minutes,

788
00:31:20,500 --> 00:31:22,500
that wall's going to come down too.

789
00:31:22,500 --> 00:31:24,500
Second thing, there aren't many buildings built

790
00:31:24,500 --> 00:31:26,500
like this these days.

791
00:31:26,500 --> 00:31:28,500
Most of them have modern size encodes in mind.

792
00:31:28,500 --> 00:31:30,500
In fact, you watch them at home,

793
00:31:30,500 --> 00:31:32,500
you're probably in a modern building.

794
00:31:32,500 --> 00:31:34,500
So that's what we've got to do next.

795
00:31:34,500 --> 00:31:36,500
Let's go.

796
00:32:04,500 --> 00:32:07,500
The things that you see on this jar are very dangerous.

797
00:32:07,500 --> 00:32:09,500
Please don't drive them at home.

798
00:32:09,500 --> 00:32:12,500
We have experts to keep us safe.

799
00:32:17,500 --> 00:32:18,500
Welcome back.

800
00:32:18,500 --> 00:32:20,500
Mythbusters has been attempting to answer

801
00:32:20,500 --> 00:32:22,500
the age-old conundrum of which bathroom

802
00:32:22,500 --> 00:32:24,500
stall in a public restroom is the cleanest,

803
00:32:24,500 --> 00:32:26,500
which is the dirtiest,

804
00:32:26,500 --> 00:32:28,500
and which gets the most use.

805
00:32:28,500 --> 00:32:30,500
In order to test this,

806
00:32:30,500 --> 00:32:32,500
we have come near the bathroom behind me

807
00:32:32,500 --> 00:32:34,500
by cleaning it within an inch of its life,

808
00:32:34,500 --> 00:32:36,500
adding clicker counters on each of the four

809
00:32:36,500 --> 00:32:38,500
stall doors, and we plan to come back

810
00:32:38,500 --> 00:32:40,500
in a few days to test how much bacteria

811
00:32:40,500 --> 00:32:42,500
build up over the time the public was using it.

812
00:32:42,500 --> 00:32:44,500
But now, it's time for people to come in

813
00:32:44,500 --> 00:32:46,500
and just start using it like they normally would.

814
00:32:46,500 --> 00:32:48,500
So, come on, public.

815
00:32:48,500 --> 00:32:50,500
Time to use the bathroom.

816
00:32:50,500 --> 00:32:52,500
Although the toilet is now open for business,

817
00:32:52,500 --> 00:32:54,500
users are a little reticent,

818
00:32:54,500 --> 00:32:56,500
but they need to be worried.

819
00:32:56,500 --> 00:32:58,500
Now, normally we'd have a whole bunch of cameras

820
00:32:58,500 --> 00:33:00,500
everywhere to record the process of our

821
00:33:00,500 --> 00:33:02,500
experiment.

822
00:33:02,500 --> 00:33:04,500
But, well,

823
00:33:04,500 --> 00:33:06,500
in this particular case, it might not be

824
00:33:06,500 --> 00:33:08,500
such a good idea.

825
00:33:08,500 --> 00:33:10,500
And anyway,

826
00:33:10,500 --> 00:33:12,500
why would you want to watch what happens in here?

827
00:33:12,500 --> 00:33:14,500
I certainly wouldn't.

828
00:33:14,500 --> 00:33:16,500
Me, either.

829
00:33:16,500 --> 00:33:18,500
So, let's stick with some cryptic close-ups,

830
00:33:18,500 --> 00:33:20,500
a time-lapse montage,

831
00:33:20,500 --> 00:33:22,500
and some

832
00:33:22,500 --> 00:33:24,500
inappropriate interviews.

833
00:33:24,500 --> 00:33:26,500
Here comes another member of the public.

834
00:33:26,500 --> 00:33:28,500
Cutty, what's your name?

835
00:33:28,500 --> 00:33:30,500
My name is Brad.

836
00:33:30,500 --> 00:33:32,500
Brad, might have asked you a personal question?

837
00:33:32,500 --> 00:33:34,500
Sure, why not?

838
00:33:34,500 --> 00:33:36,500
Okay, did you use one of the stalls in there

839
00:33:36,500 --> 00:33:38,500
when you went in? I did.

840
00:33:38,500 --> 00:33:40,500
Okay, which one did you use? Which one do you normally

841
00:33:40,500 --> 00:33:42,500
and cloud to use? Number two.

842
00:33:42,500 --> 00:33:44,500
Number two? Yes, sir.

843
00:33:44,500 --> 00:33:46,500
Thank you very much, sir.

844
00:33:46,500 --> 00:33:48,500
Have a nice day.

845
00:33:48,500 --> 00:33:50,500
So, it's one point to stall two,

846
00:33:50,500 --> 00:33:52,500
and there's more to come.

847
00:33:52,500 --> 00:33:54,500
Did you, in fact, use one of the stalls in there?

848
00:33:54,500 --> 00:33:56,500
Yeah. Okay.

849
00:33:56,500 --> 00:33:58,500
What did you use? I like the one in the back.

850
00:33:58,500 --> 00:34:00,500
Corner one. In fact, throughout day one,

851
00:34:00,500 --> 00:34:02,500
nobody used stall one at all.

852
00:34:02,500 --> 00:34:04,500
I choose the third one.

853
00:34:04,500 --> 00:34:06,500
The fourth one, the big one.

854
00:34:06,500 --> 00:34:08,500
Number three.

855
00:34:08,500 --> 00:34:10,500
I used the one far on the left as you walk in.

856
00:34:12,500 --> 00:34:14,500
We are taking a break from our regularly scheduled

857
00:34:14,500 --> 00:34:16,500
programming in the men's room to visit the ladies room

858
00:34:16,500 --> 00:34:18,500
where we discovered to our astonishment

859
00:34:18,500 --> 00:34:20,500
not one or two, but three freaking couches in this joint.

860
00:34:20,500 --> 00:34:22,500
Now I know why they always go to the bathroom together.

861
00:34:22,500 --> 00:34:24,500
And why they take so long.

862
00:34:24,500 --> 00:34:26,500
You can write to us about this sexist talk later,

863
00:34:26,500 --> 00:34:28,500
but first, I'm actually kind of interested

864
00:34:28,500 --> 00:34:30,500
in the interviews we did outside the restroom.

865
00:34:30,500 --> 00:34:32,500
Yeah, it was a little creepy,

866
00:34:32,500 --> 00:34:34,500
but they all seem to value their privacy

867
00:34:34,500 --> 00:34:36,500
more than anything else.

868
00:34:36,500 --> 00:34:38,500
Yeah, and seek out the farthest stall from the door,

869
00:34:38,500 --> 00:34:40,500
like I do.

870
00:34:40,500 --> 00:34:42,500
Me, I don't care.

871
00:34:42,500 --> 00:34:44,500
You're all just like, ah, hear me.

872
00:34:44,500 --> 00:34:46,500
Ha, ha, ha.

873
00:34:46,500 --> 00:34:48,500
Day two at the gents and business is booming.

874
00:34:48,500 --> 00:34:50,500
As this myth gets flushed out

875
00:34:50,500 --> 00:34:52,500
over nothing but the gents

876
00:34:52,500 --> 00:34:54,500
and the business is booming.

877
00:34:54,500 --> 00:34:56,500
And as this myth gets flushed out

878
00:34:56,500 --> 00:34:58,500
over 96 hours,

879
00:34:58,500 --> 00:35:00,500
which, with one final farewell,

880
00:35:00,500 --> 00:35:02,500
come to a stick in.

881
00:35:02,500 --> 00:35:04,500
Well, are you ready?

882
00:35:04,500 --> 00:35:06,500
I am. It's been four days. Let's reswap this joint.

883
00:35:06,500 --> 00:35:08,500
Ha.

884
00:35:08,500 --> 00:35:10,500
Remember, there's two bits of data they need to collect.

885
00:35:10,500 --> 00:35:12,500
Oh, man, someone here didn't flush.

886
00:35:12,500 --> 00:35:14,500
That's gross.

887
00:35:14,500 --> 00:35:16,500
First is the bacterial load of each stall.

888
00:35:16,500 --> 00:35:18,500
Oh, this is nasty.

889
00:35:18,500 --> 00:35:20,500
And second is the door key.

890
00:35:20,500 --> 00:35:22,500
And second is the door clicker data,

891
00:35:22,500 --> 00:35:24,500
which is much easier on the eye.

892
00:35:24,500 --> 00:35:26,500
Ha, ha, ha.

893
00:35:26,500 --> 00:35:28,500
What'd you get?

894
00:35:28,500 --> 00:35:30,500
Well, I can tell you, but I can't tell them.

895
00:35:30,500 --> 00:35:32,500
They're going to have to wait till we get back to the shop.

896
00:35:32,500 --> 00:35:34,500
See, even if I turned around and showed it to you,

897
00:35:34,500 --> 00:35:36,500
it would still be blurred.

898
00:35:36,500 --> 00:35:38,500
That's right. It's television. Let's go.

899
00:35:38,500 --> 00:35:40,500
Well, it's been three days

900
00:35:40,500 --> 00:35:42,500
since we started our toilet experiment.

901
00:35:42,500 --> 00:35:44,500
What do we got?

902
00:35:44,500 --> 00:35:46,500
Wow, nice graphics.

903
00:35:46,500 --> 00:35:48,500
We actually got some great numbers.

904
00:35:48,500 --> 00:35:50,500
Starting with the stall farthest from the door,

905
00:35:50,500 --> 00:35:53,500
stall number four, we had a total of 24 users.

906
00:35:53,500 --> 00:35:55,500
Stall number three, 34 users.

907
00:35:55,500 --> 00:35:58,500
There's a few more for stall number two at 38,

908
00:35:58,500 --> 00:36:01,500
but stall number one had a total of 23 users.

909
00:36:01,500 --> 00:36:03,500
Well, that's the least number it uses.

910
00:36:03,500 --> 00:36:05,500
How does that correlate with bacterial count?

911
00:36:05,500 --> 00:36:07,500
Here is where it actually gets really interesting.

912
00:36:07,500 --> 00:36:10,500
We counted the number of colonies from all of our swabs.

913
00:36:10,500 --> 00:36:13,500
Starting again at number four, the number was 231.

914
00:36:13,500 --> 00:36:15,500
Moving in closer.

915
00:36:15,500 --> 00:36:17,500
20, 267.

916
00:36:17,500 --> 00:36:20,500
Stall number one, 162.

917
00:36:20,500 --> 00:36:22,500
It's not only the least used,

918
00:36:22,500 --> 00:36:24,500
but it is by far the cleanest of all four stalls.

919
00:36:24,500 --> 00:36:26,500
Wow, that's definitive.

920
00:36:26,500 --> 00:36:28,500
Yeah, this one is completely confirmed.

921
00:36:28,500 --> 00:36:30,500
Looks like in future I'll be using stall number one.

922
00:36:30,500 --> 00:36:32,500
I'm still going to stick with stall number four.

923
00:36:32,500 --> 00:36:45,500
In earthquake emergency,

924
00:36:45,500 --> 00:36:50,500
the door just scored.

925
00:36:50,500 --> 00:36:53,500
So as spectacular as that result was,

926
00:36:53,500 --> 00:36:57,500
does it mean that diving for the doorway is the best thing to do?

927
00:36:57,500 --> 00:36:59,500
Well, not necessarily.

928
00:36:59,500 --> 00:37:02,500
You see, simply houses just aren't built this way in the U.S. anymore.

929
00:37:02,500 --> 00:37:05,500
I mean, they used to be, which may be where the myth came from,

930
00:37:05,500 --> 00:37:07,500
but with modern building codes,

931
00:37:07,500 --> 00:37:10,500
is the doorway still the best place to be?

932
00:37:10,500 --> 00:37:13,500
Time to build something a little more up to date.

933
00:37:13,500 --> 00:37:18,500
So this is our wood frame house built to modern building codes.

934
00:37:18,500 --> 00:37:20,500
It's got studs every 16 inches.

935
00:37:20,500 --> 00:37:22,500
It's lagged into the floor.

936
00:37:22,500 --> 00:37:24,500
The roof trusses have hurricane ties.

937
00:37:24,500 --> 00:37:28,500
Now, one reason why a wood frame house might fare better than a masonry house

938
00:37:28,500 --> 00:37:30,500
is when a brick wall flexes,

939
00:37:30,500 --> 00:37:34,500
the mortar simply pops out and the wall crumbles and fails.

940
00:37:34,500 --> 00:37:38,500
With wood frame house, it can flex equally in both directions

941
00:37:38,500 --> 00:37:41,500
so it can absorb some of that energy and probably fare better.

942
00:37:41,500 --> 00:37:45,500
Now, the doorway might be the strongest part of a masonry house,

943
00:37:45,500 --> 00:37:49,500
but my money is on the wood frame house being equally strong all around.

944
00:37:49,500 --> 00:37:51,500
That's the theory.

945
00:37:51,500 --> 00:37:53,500
And once the roof and walls are up,

946
00:37:53,500 --> 00:37:57,500
that just leaves the finishing touches.

947
00:37:57,500 --> 00:38:00,500
Hi everybody. Welcome to our house.

948
00:38:00,500 --> 00:38:06,500
The windows and the all-important door.

949
00:38:06,500 --> 00:38:08,500
Good night.

950
00:38:08,500 --> 00:38:11,500
Next comes the furniture.

951
00:38:11,500 --> 00:38:13,500
Ooh, be careful with that.

952
00:38:13,500 --> 00:38:15,500
It's been in the family for years.

953
00:38:15,500 --> 00:38:18,500
Then in go the USGS sensors,

954
00:38:18,500 --> 00:38:23,500
whose owner is Adamon that this myth is at fault.

955
00:38:23,500 --> 00:38:25,500
Okay, Dave, what do you think about the myth

956
00:38:25,500 --> 00:38:29,500
that the doorway is the safest place to stand in an earthquake?

957
00:38:29,500 --> 00:38:34,500
I wouldn't do it. The USGS advocates that you drop, cover, and hold on,

958
00:38:34,500 --> 00:38:38,500
which means drop under a sturdy table or a desk and hold on to it

959
00:38:38,500 --> 00:38:41,500
so that you don't separate from the table.

960
00:38:44,500 --> 00:38:50,500
This is an 8.0 magnitude earthquake with a wooden frame two-code house.

961
00:38:50,500 --> 00:38:52,500
Start the sequence.

962
00:38:52,500 --> 00:38:56,500
Three, two, one.

963
00:38:59,500 --> 00:39:02,500
Immediately the table roars into life.

964
00:39:02,500 --> 00:39:04,500
Look at the chandeliers.

965
00:39:04,500 --> 00:39:07,500
Chandeliers freeing around the room.

966
00:39:07,500 --> 00:39:11,500
And it's not long before the bookcase takes out mannequin one.

967
00:39:11,500 --> 00:39:15,500
Oh my God, everything is falling over.

968
00:39:15,500 --> 00:39:18,500
While the inside may be imploding,

969
00:39:18,500 --> 00:39:21,500
the guy under the table is injury free,

970
00:39:21,500 --> 00:39:24,500
which cannot be said of the doorman.

971
00:39:24,500 --> 00:39:26,500
That dude got spanked.

972
00:39:26,500 --> 00:39:28,500
Yeah, the door is spanked with the butt.

973
00:39:28,500 --> 00:39:31,500
A full two minutes of spanking later,

974
00:39:31,500 --> 00:39:34,500
and the house stays standing strong.

975
00:39:34,500 --> 00:39:36,500
The construction's way too good.

976
00:39:36,500 --> 00:39:39,500
So the guys decide to come up for it.

977
00:39:39,500 --> 00:39:42,500
Okay, shut it down, shut it down.

978
00:39:44,500 --> 00:39:47,500
So we shook our house at an 8.0

979
00:39:47,500 --> 00:39:49,500
and you can see it's still standing.

980
00:39:49,500 --> 00:39:51,500
It's built to modern building codes,

981
00:39:51,500 --> 00:39:53,500
which have seismic concerns in mind.

982
00:39:53,500 --> 00:39:56,500
Now inside of the house, it's a different story.

983
00:39:56,500 --> 00:39:58,500
There's stuff everywhere.

984
00:39:58,500 --> 00:40:01,500
But the important thing is that the guy under the table

985
00:40:01,500 --> 00:40:04,500
did just as well as the guy standing in the doorway.

986
00:40:04,500 --> 00:40:06,500
And in some ways, actually better.

987
00:40:06,500 --> 00:40:08,500
See, the table provided shielding,

988
00:40:08,500 --> 00:40:10,500
whereas the guy in the doorway,

989
00:40:10,500 --> 00:40:14,500
he got spanked several times with the door as it swung around.

990
00:40:14,500 --> 00:40:16,500
But we're not done yet.

991
00:40:16,500 --> 00:40:18,500
Let's shake it one more time.

992
00:40:18,500 --> 00:40:20,500
So unlike the masonry house,

993
00:40:20,500 --> 00:40:23,500
this modern marvel is made of sterner stuff,

994
00:40:23,500 --> 00:40:26,500
which means the duck, cover, and hold technique

995
00:40:26,500 --> 00:40:28,500
is so far the safest.

996
00:40:30,500 --> 00:40:34,500
But what will happen when they crack the machine to the max?

997
00:40:34,500 --> 00:40:39,500
This is Quake Villa with a two-code wooden structure house.

998
00:40:39,500 --> 00:40:42,500
Three, two, one.

999
00:40:43,500 --> 00:40:46,500
With the air pressure firing at all cylinders,

1000
00:40:46,500 --> 00:40:49,500
the earthquake hits a 9.5,

1001
00:40:49,500 --> 00:40:53,500
making it the strongest quake ever recorded.

1002
00:40:56,500 --> 00:40:58,500
Yet the house still stands,

1003
00:40:58,500 --> 00:41:01,500
which is more than can be said for the doormat.

1004
00:41:05,500 --> 00:41:07,500
Unable to maintain stability,

1005
00:41:07,500 --> 00:41:10,500
he's hit the deck and is out for the count.

1006
00:41:10,500 --> 00:41:12,500
That's not good.

1007
00:41:12,500 --> 00:41:16,500
Which means the only merry mannequin is the crouching tiger.

1008
00:41:19,500 --> 00:41:21,500
But perhaps the biggest surprise

1009
00:41:21,500 --> 00:41:26,500
is that the built-to-code building appears to be unbreakable.

1010
00:41:26,500 --> 00:41:30,500
So as you can see, the modern building codes are that way for a reason.

1011
00:41:30,500 --> 00:41:33,500
This house, which we built in a day and a half,

1012
00:41:33,500 --> 00:41:36,500
stood up to a 9.5 earthquake,

1013
00:41:36,500 --> 00:41:40,500
enough to bring down an unreinforced masonry house.

1014
00:41:42,500 --> 00:41:44,500
It's a feat of engineering for sure.

1015
00:41:44,500 --> 00:41:49,500
But with two different results for their two different houses,

1016
00:41:49,500 --> 00:41:52,500
the guys head home to the wrap-up.

1017
00:41:52,500 --> 00:41:54,500
Okay, so how are we going to call this one?

1018
00:41:54,500 --> 00:41:57,500
Well, given that the myth is that diving for the doorway

1019
00:41:57,500 --> 00:41:59,500
is the best thing to do in all cases,

1020
00:41:59,500 --> 00:42:01,500
I think we're going to have to call this one busted,

1021
00:42:01,500 --> 00:42:03,500
because that's not always the case.

1022
00:42:03,500 --> 00:42:07,500
Exactly. I mean, maybe if we're in an old, unreinforced masonry building,

1023
00:42:07,500 --> 00:42:09,500
which are very rare in the United States,

1024
00:42:09,500 --> 00:42:11,500
getting to the doorway is a good idea.

1025
00:42:11,500 --> 00:42:13,500
But a better idea is getting out of the building altogether.

1026
00:42:13,500 --> 00:42:15,500
Exactly.

1027
00:42:15,500 --> 00:42:17,500
And as far as modern buildings built to code,

1028
00:42:17,500 --> 00:42:19,500
they're probably not going to collapse anyway.

1029
00:42:19,500 --> 00:42:23,500
Which means the current advice of drop cover and hold on is your best bet.

1030
00:42:23,500 --> 00:42:25,500
That's what I'll be doing.