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Speaker 1: Hey, everybody, this is Chuck here on a Saturday. It's beautiful,

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Speaker 1: it's sunny. It's actually rainy and cold. But maybe by

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Speaker 1: the time this rolls around it will be beautiful and sunny.

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Speaker 1: But I know in February six two sixteen, it was

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Speaker 1: not beautiful and sunny because we released an episode that

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Speaker 1: has gone down and stuff you should know history as uh,

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Speaker 1: from our point of view, quite possibly the most boring,

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Speaker 1: worst one. So I thought I would pick this one

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Speaker 1: and rerelease it into the world and just see if

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Speaker 1: it's as bad as I thought it was. This is

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Speaker 1: our very very infamous episode on Jackhammers. Yes, we did

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Speaker 1: an entire episode on Jackhammers and here it is right now.

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Speaker 1: Welcome to Stuff You should Know, a production of My

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Speaker 1: Heart Radios How Stuff Works. Hey, welcome to the podcast.

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Speaker 1: I'm Josh Clark. There's Charles w Chuck Bryant, and Jerry's

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Speaker 1: over there, which means time for Stuff you should know.

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Speaker 1: The Jackhammer edition coming at you. That's right, the most annoying,

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Speaker 1: one of the most annoying sounds. And I know you

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Speaker 1: hate the leaf blower. Yeah, it's established. I think the

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Speaker 1: camera up there. Sure, yeah, but we don't live in

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Speaker 1: New York if we lived in New York Jackhammer b

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Speaker 1: number one. I feel like I've never stayed in a

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Speaker 1: hotel in New York where there wasn't a jack below me,

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Speaker 1: not even a chance. Every single time leaf blower. It's

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Speaker 1: a lot more frequent down here in Atlanta than the jackhammer.

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Speaker 1: Not a lot of leaf blowers in New York City,

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Speaker 1: not a lot of leaves. Well, that's not necessarily true.

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Speaker 1: You've been somewhere you are. Uh So we don't usually

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Speaker 1: um shout out to thank you at the beginning of

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Speaker 1: an episode, but we got a couple of gifts that

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Speaker 1: are so special we want to do that. So Peter

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Speaker 1: O'Donnell in the gang at built Sharp Knives b I

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Speaker 1: l T Sharp out of Philly. H sent us, sent

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Speaker 1: me a chef's knife, sent you a filet knife beat

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Speaker 1: and it's one of the most gorgeous pieces of like

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Speaker 1: handmade craftsmanship I've ever seen. It's amazing. I cannot wait

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Speaker 1: to catch a fish. Oh dude, I can't wait for

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Speaker 1: that for you cut that thing open, yeah, after it's dead.

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Speaker 1: Uh really, you can't lock the head off while it's

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Speaker 1: still alive. They think you're supposed to you're supposed to

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Speaker 1: hit it with a hammer. I think some people do. Um,

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Speaker 1: I do not. These things are gorgeous. I mean the

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Speaker 1: blade itself, I mean the hand make these, the handle,

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Speaker 1: the weight, it's just it's a piece of art. And

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Speaker 1: not only that, it is the sharpest thing I've ever

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Speaker 1: seen in my life. It's like dangerous. Um, but I

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Speaker 1: don't want to you know, it's dangerous. They're knives. They're

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Speaker 1: supposed to be sharp, but wield it with respect. Well yeah,

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Speaker 1: well they're respectable. Live so um that you can actually

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Speaker 1: go into tumbler. You can just search hashtag knives. You

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Speaker 1: should know one word and it uh it chronicles and

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Speaker 1: pictures and short captions or brief captions the process of

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Speaker 1: them making our knives. It's awesome. Yeah, it's just really

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Speaker 1: neat and I just love like handcrafting and forging steel,

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Speaker 1: like those are lost arts in a lot of ways,

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Speaker 1: and um, they're doing it right man, they're really beautiful.

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Speaker 1: Cool man. So anyway, thank you, Yeah, thank you guys. Thanks.

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Speaker 1: It was really cool. So jack hammers, yeah, jack hammers.

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Speaker 1: If they were sharpest built sharp knives, they'd be onto something.

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Speaker 1: But I don't know if it would work. Quite the same,

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Speaker 1: Probably not so. Um, Yes, it's true we are actually

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Speaker 1: talking about jack hammers, and yes, it's true that jack

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Speaker 1: hammers are about what you think they are, but they're

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Speaker 1: also kind of interesting when you start to look into them. Right.

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Speaker 1: Oh yeah, well yes, so think about I didn't realize this.

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Speaker 1: This article points it out. Jack hammer is a hammer

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Speaker 1: and a chisel, but it's a hardcore hammer and chisel. Yeah,

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Speaker 1: and it takes out of the equation largely the human

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Speaker 1: who's back and shoulder muscles have to be involved in

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Speaker 1: every single strike of that hammer and chisel. You're talking

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Speaker 1: John Henry and the sledge hammer, Yes, exactly, because prior

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Speaker 1: to the advent of the jackhammer about eight fifties, by

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Speaker 1: the turn of the last century, we had jackhammers kind

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Speaker 1: of down pat um. It was sledge hammers and pick

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Speaker 1: axes to remove rock. It was a real deal that

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Speaker 1: was like killed people like it literally could kill you

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Speaker 1: with that kind of work. Yeah. I mean, mining is

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Speaker 1: still a very dangerous job, but pre Industrial Revolution mining

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Speaker 1: was no fun um, dangerous, deadly, and even if you

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Speaker 1: didn't die, it's just brutal, brutal back baking work, baking work, slinging,

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Speaker 1: as sledgehammer. Yeah, you ever slung a sledge it's the worst.

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Speaker 1: It's it's hard work. You ever used the jackhammer? No,

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Speaker 1: I haven't. It's awful. Well, that's the thing. It's better

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Speaker 1: than the sledgehammer. Yeah, well in some ways. But it's

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Speaker 1: brutally difficult. It is. It's probably one of the most

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Speaker 1: brutal tools you can use on any kind of site

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Speaker 1: and for any kind of project. There aren't that many

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Speaker 1: tools that there. They're gonna take as much out of

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Speaker 1: you as the jackhammers on your body. Yeah, because they

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Speaker 1: weigh about a hundred pounds, like a normal heavy duty

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Speaker 1: jackhammer weighs about a hundred pounds. You have to hold

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Speaker 1: it in place upright, because you don't want to jumping around,

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Speaker 1: although it's probably not going to anyway. It's it's designed

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Speaker 1: not to jump around, but you still have to. Um.

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Speaker 1: You want to kind of keep it in a fairly

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Speaker 1: confined area, which means you're using your muscles to study

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Speaker 1: it while it's going up and down at a very

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Speaker 1: very fast rate. Some of those things UM impact with

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Speaker 1: the ground one thousand to forty times a minute. It's tough.

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Speaker 1: It's it's the only tool that and the hardwood floor,

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Speaker 1: um skimmer, you know, like the orbital floor cleaner. You

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Speaker 1: can use that on like put a standing pad on

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Speaker 1: a hardwood floor, and that thing. And the sledge hammer.

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Speaker 1: The only time I've ever used tools that I felt

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Speaker 1: like we're controlling me and not me, not controlling the

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Speaker 1: tool until you get it. Once you get it, it's

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Speaker 1: a little better. But at first, when you first start

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Speaker 1: to use it. You can rent a jackhammer, you know. Yeah,

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Speaker 1: I mean, if you want to bust up your driveway,

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Speaker 1: you can go do it yourself. If you're a fool,

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Speaker 1: make sure that you don't need the driveway anymore before

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Speaker 1: you do that. Yeah. Yeah. But um, once you get

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Speaker 1: the hang of it, you kind of can wield it

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Speaker 1: a little bit. But it's tough. I mean, it feels

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Speaker 1: like I have no power or control over this thing, right,

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Speaker 1: I can imagine you know. So, Um, it is a

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Speaker 1: very difficult tool. But again, the alternative is early death,

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Speaker 1: and the other alternative, which is to call someone to

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Speaker 1: do it for you, is the best option of the three.

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Speaker 1: But so say that you are um King Carlo Alberto

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Speaker 1: of Sardinia and the years about eighteen thirty something, eighteen

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Speaker 1: forty and you want a train tunnel built through a mountain,

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Speaker 1: and the tunnel is gonna need to be twelve kilometers long.

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Speaker 1: You do call somebody else, but that somebody else you

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Speaker 1: call goes. I don't know what to tell you, buddy.

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Speaker 1: We could try pick axes or whatever, but you're not

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Speaker 1: still gonna be alive by the time we finished. What

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Speaker 1: can we do? And actually this call for a twelve

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Speaker 1: kilometer long tunnel through a mountain in Sardinia prompted the

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Speaker 1: early um the early forays into developing pneumatic tools like

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Speaker 1: a jackhammer. Yeah, in eighteen forty eight it got named

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Speaker 1: Jonathan Couch built a what he called a percussion drill,

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Speaker 1: and this had a bit that was it went through

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Speaker 1: the piston of a steam engine, so it was piston driven.

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Speaker 1: Then uh contemporary Joseph Foul actually attached it to the

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Speaker 1: piston and then he started in eightf one using air

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Speaker 1: which is pneumatic to power it. But these were still

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Speaker 1: attached to a piston. And it wasn't until Charles Brady

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Speaker 1: King when he actually has given credit for inventing the

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Speaker 1: traditional looking handheld modern jack modern pneumatic powered jackhammer, right,

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Speaker 1: and he gets a lot of credit for stuff that

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Speaker 1: was already built. Like a lot of people say he

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Speaker 1: was actually the inventor of the automobile. No he wasn't.

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Speaker 1: Oh well, he was the inventor of the gasoline powered automobile.

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Speaker 1: No he wasn't. He was the first guy in Detroit

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Speaker 1: to build and drive one around. Yeah, and he did

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Speaker 1: end up inspiring and mentoring Ransom Olds and Henry Ford

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Speaker 1: and some other early car manufacturers and is almost single

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Speaker 1: handily responsible for making Detroit motor city. This guy, but

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Speaker 1: he also Stanley right? Uh? And what's from his eights? Freely?

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Speaker 1: I like that guy's stuff? What do you mean didn't

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Speaker 1: he get kicked out of Kiss? Oh? I think he

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Speaker 1: was sort of not invited back. Yeah. I think it's

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Speaker 1: a money move. They don't have to pay the nameless

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Speaker 1: other guitar player nearly as well. He was a founder

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Speaker 1: of the band. Right, How do you get kicked out

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Speaker 1: like that for money? I think Paul Stanley and Jean

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Speaker 1: Simmons probably own Kiss Incorporated. I know. Anyway, Um, Charles

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Speaker 1: Brady King Uh, he put Detroit on the map as

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Speaker 1: far as auto manufacturer goes. And he did do a

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Speaker 1: lot of refining of pneumatic tools, including the jack hammer.

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Speaker 1: And he does hold the pattern, he did hold the

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Speaker 1: patent for it. Yeah, and he had been a lot

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Speaker 1: of stuff. He was a sharp guy. And the pneumatic,

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Speaker 1: the fact that it's pneumatic, which means air powered, compressed

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Speaker 1: air powered UM is the reason why most jackhammers today

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Speaker 1: are still compressed air powered. It's because of the mining

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Speaker 1: application an it. Yeah, like when you mind, you're releasing

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Speaker 1: a lot of potentially explosive gases and uh, you can't

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Speaker 1: have something like a steam engine that's combustion powered down there, yeah,

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Speaker 1: or you can't have an engine in there releasing exhaust. Um.

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Speaker 1: And you can't have a jackhammer that will spark a rock. Um.

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Speaker 1: Well that might happen no matter what. Right, Well, no,

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Speaker 1: that's what I'm saying. You can't have that among volatile gases.

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Speaker 1: So you've air driven is the perfect key, because it

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Speaker 1: doesn't matter if that hoses a thousand feet long. You're

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Speaker 1: not gonna lose power because it's gonna be Yeah, it's

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Speaker 1: gonna be compressed air up against compressed air, and up

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Speaker 1: on the surface. You've got a diesel engine that's powering

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Speaker 1: a piston just like in your car, and the piston

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Speaker 1: moves up and down the cylinder. As it moves down,

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Speaker 1: it compresses the air in the cylinder and pushes it

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Speaker 1: down into a storage tank where it sits a compressed

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Speaker 1: air and that's released out the other end through the

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Speaker 1: hose and it ends up into the jackhammer. And yeah,

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Speaker 1: no matter how far away it is, it's still going

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Speaker 1: to be just as powerful. And that compressed air is inflammable,

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Speaker 1: so you can be a happy miner all the live

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Speaker 1: long day. Well, buddy, you're getting excited, so that means

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Speaker 1: we need to take a break and put this pill

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Speaker 1: under your tongue and we'll come back right after this story.

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Speaker 1: How you feeling now, relaxed? Good? I love the title

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Speaker 1: of this next section, Air powered destruction. Um, you can

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Speaker 1: get an electric jackhamer. If you've ever gone to a

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Speaker 1: hardware store, they have these kind of smaller handheld jack

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Speaker 1: hammers that, um, you can take up like your bathroom

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Speaker 1: floor tile pretty well with it plugging into the wall.

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Speaker 1: Has a little chisel bit on the end of it. Um,

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Speaker 1: But that's small. Beans. You can't do a driveway or

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Speaker 1: concrete or asphalt with with something like that, or a

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Speaker 1: twelve kilometer tunnel through a mountain in Sardinia. No, you

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Speaker 1: need the big T shaped jack camera. And here's one

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Speaker 1: of the things that didn't really occur to me. One

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Speaker 1: of the reasons it works so well is because it's

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Speaker 1: so heavy. Right. It's not like things say, well, let's

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Speaker 1: make this thing way fifteen pounds or twenty pounds to

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Speaker 1: make it easier to run, which they probably could. Yeah,

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Speaker 1: you maybe could do that, but it would jump all

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Speaker 1: over the place. Yeah, you want that thing super super

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Speaker 1: heavy because that's part of the power and forced behind it.

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Speaker 1: That's right. So these things are pneumatic, right, And just

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Speaker 1: like on the compressed air compressor up on the surface

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Speaker 1: when you're done in the mine, they actually have a

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Speaker 1: jackhammer has a piston in a piston in a cylinder

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Speaker 1: in it, right, Okay, And it's it's actually a really

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Speaker 1: kind of simple when you cut the thing open and

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Speaker 1: draw a cross section of it, which we did, yeah,

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Speaker 1: on our hands for crib sheets. Um you you you

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Speaker 1: can see that. Really the whole mechanism comes down to

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Speaker 1: a trigger valve, right, that's right. So what you have

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Speaker 1: here is you got the pressure chamber. The compressed air

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Speaker 1: enters that chamber activates the trigger valve. And it just

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Speaker 1: because of the compressed air opens and shuts really fast, right,

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Speaker 1: and so the trigger valve moves the air either above

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Speaker 1: the piston or when it closes, the air goes down

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Speaker 1: below the piston, which means chisel goes up, chisel goes down, right,

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Speaker 1: because the piston is striking the top of that chisel bit,

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Speaker 1: driving it downward when the compressed air comes in and

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Speaker 1: pushes the piston down. And then when the valve closes

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Speaker 1: and the air goes underneath the piston, there's also a

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Speaker 1: spring in there that brings the drill bit back up.

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Speaker 1: Because it wouldn't work very well if you knock it down.

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Speaker 1: They had to go down and reset it. And apparently

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Speaker 1: the earliest um, the earliest Jackhammeer had that very designed

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Speaker 1: that feature. That was it like it go bam and

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Speaker 1: then you definitely like reset it bam and then reset

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Speaker 1: it and they're like, this isn't gonna work. Yeah, that's

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Speaker 1: sort of like the pneumatic cattle punch that they that

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Speaker 1: what's his face used in no Country for old men.

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Speaker 1: One way, it's exactly like that. Not very good if

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Speaker 1: you're trying to bust up concrete, but good if you

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Speaker 1: want to put on a cow. That's right. It doesn't

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Speaker 1: stunn them. It does the eternal stunt. I think it

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Speaker 1: stuns a cow and then they kill them. Oh I

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Speaker 1: thought it they put it into the brain to kill

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Speaker 1: the cow. I don't think it actually. I think it

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Speaker 1: can and probably does sometimes, but I think the main

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Speaker 1: purpose of it is to stun the cow, so it's

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Speaker 1: not like it's just dazed and out of it when

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Speaker 1: it when it, they kill it. Oh yeah, yeah. Uh.

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Speaker 1: Hydraulic jackhammers, it's the same. Uh jackhammer would kill a cow.

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Speaker 1: Hydraulics use fluid, same principle, but it doesn't use air.

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Speaker 1: And if you've ever seen the they have jackhammers you

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Speaker 1: can that are really large that you can't handle as

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Speaker 1: a person, but it's like attached to a backhoe or

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Speaker 1: something that's for big, big jobs. And those are usually

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Speaker 1: um hydraulic and pneumatic. Right, but probably not every time.

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Speaker 1: I'm sure someone in the construction industry will correct me

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Speaker 1: on that. Well. I went and looked, and if you

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Speaker 1: go on Alibaba that you know that's I has everything

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Speaker 1: and they have hydraulic jack hammers for sale. What's ali

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Speaker 1: baba is that like Skymall. It's like China's Amazon, but

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Speaker 1: they sell everything on it. It's nothing like Skymall. Do

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Speaker 1: you think everything's like skymallers because you want a skymall

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Speaker 1: to come back? I sure do. Um, but they it

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Speaker 1: did seem like all of the back hoe attached um

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Speaker 1: jack hammers were hydraulic that I saw. Okay, all right, well, um,

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Speaker 1: here's what happens at a thousand hits per minute. That

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Speaker 1: chisel bit and if you're breaking up rock. They're different

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Speaker 1: kinds of bits. A pointy bit if you're breaking up

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Speaker 1: like a driveway or something is really good, or you

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Speaker 1: can use a flat bit for other applications. So yeah,

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Speaker 1: if you're breaking up a driveway and all you want

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Speaker 1: is for the driveway to go bye by, Yeah, the

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00:16:15,040 --> 00:16:17,080
Speaker 1: pointy bits the one you want because it's not a

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Speaker 1: controlled cut. The the the like a flathead screw driver

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Speaker 1: style bit is the kind that where you can really

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Speaker 1: kind of control where the cracking goes right or if

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Speaker 1: you wanna, uh, like I said, if you're taking up

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Speaker 1: your floor tile and you have the handheld version, that's

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Speaker 1: what you want to scoot it underneath the tile and

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Speaker 1: chip it up and there's actually there's like, um, some

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Speaker 1: insane mathematicians have actually like tried to figure out how

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Speaker 1: you can predict how cracks propagate. Yeah, there's like um

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Speaker 1: for the most efficient jackhammering pretty much like what bit

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Speaker 1: will work best, and like where to place it and

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Speaker 1: how to how to use it. But um, one of

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Speaker 1: the things that I didn't understand before is that when

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Speaker 1: you are jackhammering, you you are creating different types of

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Speaker 1: uh uh flaws basically in this solid say, concrete structure, right,

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Speaker 1: And when you're doing that, the first flaw you're doing,

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Speaker 1: the first flaw you're creating is this um kind of

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Speaker 1: surface powder that the the initial chips you're making are

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Speaker 1: actually powder izing and and congealing around the drill bit, right,

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Speaker 1: And that powder actually transmits the impact of the jackhammer

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Speaker 1: throughout the rest of the concrete pad in that immediate area,

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Speaker 1: and that actually starts to create cracks. So you think, well,

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Speaker 1: it's just the drill bit creating crack. It gets in

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Speaker 1: there enough. Actually no, it's it's generating like these different

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Speaker 1: materials from the very concrete itself, and it's using those

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Speaker 1: materials to distribute the force and create cracks that ultimately

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Speaker 1: start to spread and propagate, and as they spread and propagate,

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Speaker 1: they get bigger and bigger, and then a chip comes off.

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Speaker 1: And when the chip comes off, the amount of force

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Speaker 1: that's generated and there goes down again and you have

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Speaker 1: to build it back up by more jackhammering. But eventually

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00:18:09,600 --> 00:18:12,680
Speaker 1: these larger cracks that you're making come together and then

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Speaker 1: big chunks break off. And then when a big chunk

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Speaker 1: breaks off, you want somebody to come in and clear

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Speaker 1: the chunks away while you move the jackhammer, because you're

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Speaker 1: just gonna be breaking up those chunks. And that's not

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Speaker 1: the point of jackhammer anymore. Now. The point is you're

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Speaker 1: trying to remove whatever material in his bigger pieces as

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Speaker 1: can be removed, you know, right, like by like a

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Speaker 1: bacco with a bucket or something. Um. Obviously it can't

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00:18:37,720 --> 00:18:39,159
Speaker 1: be too big because you might have to break up

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Speaker 1: in a smaller bits. If you don't want a three

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Speaker 1: million little tiny rocks at the end of it, right,

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Speaker 1: you're not breaking it into gravel. No, the machines that

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Speaker 1: do that. Um, some of these things actually when when

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Speaker 1: you create a crater, that's good, but you don't want

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Speaker 1: your crater full of junk. So some of them actually

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00:18:58,119 --> 00:19:01,880
Speaker 1: have air water that blast the stuff clear as you're going,

324
00:19:02,520 --> 00:19:05,120
Speaker 1: which is pretty neat too, Yeah, which is a it's

325
00:19:05,160 --> 00:19:08,880
Speaker 1: a big that's an issue because the stuff that that

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Speaker 1: dust that accumulates that forms what's called the crushed zone,

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00:19:13,400 --> 00:19:18,560
Speaker 1: that powder that distributes the force um is actually can

328
00:19:18,600 --> 00:19:20,760
Speaker 1: be a health hazard. And there's actually a lot of

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Speaker 1: health hazards with jack hammers. Uh. And we'll talk about

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Speaker 1: them right after this, all right, Josh, health hazards of

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Speaker 1: jackhammering um that dust is no joke. Well, before we

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Speaker 1: go to health hazards, let me say this. What you

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00:19:54,960 --> 00:19:56,760
Speaker 1: and actually can be a health hazard. It can be

334
00:19:56,840 --> 00:20:00,479
Speaker 1: dangerous when you get your bits stuck. Uh. And the

335
00:20:00,520 --> 00:20:02,880
Speaker 1: general rule of thumb is you don't want to put

336
00:20:02,960 --> 00:20:05,960
Speaker 1: the bit farther down. You don't want to keep going

337
00:20:06,040 --> 00:20:09,040
Speaker 1: down farther than the length of the bit, because if

338
00:20:09,040 --> 00:20:11,240
Speaker 1: you get your bit stuck, then it's really tough to

339
00:20:11,240 --> 00:20:13,800
Speaker 1: get back out. Yeah. And while it may give you

340
00:20:13,840 --> 00:20:16,960
Speaker 1: a little break, your boss didn't gonna be happy, or

341
00:20:17,000 --> 00:20:19,160
Speaker 1: if you're renting that thing by the hour at your house, yeah,

342
00:20:19,240 --> 00:20:21,560
Speaker 1: you're not gonna be happy. Yeah, because you just used

343
00:20:21,600 --> 00:20:24,200
Speaker 1: all of the force of that compressed air to jam

344
00:20:24,280 --> 00:20:30,400
Speaker 1: that that chisel bit several inches into concrete. Yes, it's not.

345
00:20:30,920 --> 00:20:33,000
Speaker 1: You need like King Arthur to get that out. Yeah,

346
00:20:33,040 --> 00:20:35,879
Speaker 1: so move it around, um inches at a time so

347
00:20:35,920 --> 00:20:38,159
Speaker 1: it doesn't go straight down into one spot. And you

348
00:20:38,240 --> 00:20:40,960
Speaker 1: want a sharp bit as well. Obviously a dull bit

349
00:20:41,119 --> 00:20:42,840
Speaker 1: is gonna get stuck easier and it's not going to

350
00:20:42,920 --> 00:20:47,159
Speaker 1: break up the material as well. Um. And like you

351
00:20:47,200 --> 00:20:50,800
Speaker 1: said at the beginning that the jackhammers one of the

352
00:20:50,840 --> 00:20:53,679
Speaker 1: noisiest tools around, it's the worst. It might be the

353
00:20:53,840 --> 00:20:59,720
Speaker 1: noisiest tool. Jack hammers um create a noise at about

354
00:21:00,080 --> 00:21:03,240
Speaker 1: hundred and thirty decibels from why this article says, Yeah,

355
00:21:03,320 --> 00:21:06,320
Speaker 1: that is the that is the sound of a jet

356
00:21:06,320 --> 00:21:10,520
Speaker 1: engine taking off. That's how that's how loud those things

357
00:21:10,520 --> 00:21:14,240
Speaker 1: are and driving here, no joke. I passed a dude

358
00:21:14,640 --> 00:21:18,160
Speaker 1: using a jack camera, huh. And he wasn't wearing your protection,

359
00:21:18,359 --> 00:21:19,760
Speaker 1: you know. I was just about to say, is I

360
00:21:19,800 --> 00:21:24,160
Speaker 1: bet you've never seen a jackhammer operator not use your protection?

361
00:21:24,920 --> 00:21:27,480
Speaker 1: I never have until today. That's nuts. Isn't that a

362
00:21:27,520 --> 00:21:31,359
Speaker 1: weird coincidence? Though? It is totally weird and like just dumb.

363
00:21:31,520 --> 00:21:36,000
Speaker 1: He's like screwed, I got health insurance. Uh, construction headphones

364
00:21:36,040 --> 00:21:38,919
Speaker 1: are a must. Um. And because we're talking about how

365
00:21:38,960 --> 00:21:41,119
Speaker 1: how much it wears you out. If you're on a

366
00:21:41,240 --> 00:21:46,040
Speaker 1: road crew, Um, you're probably gonna be rotating out jackhammer duty. Yeah,

367
00:21:46,080 --> 00:21:49,120
Speaker 1: it's not like Chuck, You're on the jackhammer for ten

368
00:21:49,160 --> 00:21:52,320
Speaker 1: hours today for the rest of your life. Yeah. Yeah,

369
00:21:52,320 --> 00:21:55,040
Speaker 1: And it's a it's a real thing. Like people who

370
00:21:55,320 --> 00:22:00,240
Speaker 1: use jackhammers as their profession, they do face a lot

371
00:22:00,280 --> 00:22:03,600
Speaker 1: of problems. That dust is you know already mentioned that,

372
00:22:03,640 --> 00:22:06,439
Speaker 1: but concrete has a silica and that's been proven to

373
00:22:06,520 --> 00:22:10,080
Speaker 1: cause lung cancer. And so a lot of these jackhammers

374
00:22:10,080 --> 00:22:12,919
Speaker 1: will have a like a water sprayer at the end

375
00:22:12,960 --> 00:22:16,080
Speaker 1: of them that just constantly is introducing water that keeps

376
00:22:16,160 --> 00:22:19,320
Speaker 1: the dust on the ground and like a puddle. All right,

377
00:22:19,359 --> 00:22:21,479
Speaker 1: And what's the different or the deal with this. I

378
00:22:21,520 --> 00:22:23,479
Speaker 1: know you didn't get a chance to look at it,

379
00:22:23,520 --> 00:22:27,679
Speaker 1: but you sent a pretty interesting thing on the negative

380
00:22:27,680 --> 00:22:30,399
Speaker 1: effects of vibration on the human body. Yeah, it's weird.

381
00:22:30,840 --> 00:22:34,160
Speaker 1: What's the deal there? So vibrations are very odd. They

382
00:22:34,240 --> 00:22:38,000
Speaker 1: used to belong in the realm of Eastern Europe behind

383
00:22:38,040 --> 00:22:40,520
Speaker 1: the Iron Curtain. They did a lot of research in

384
00:22:40,920 --> 00:22:44,040
Speaker 1: the effects of vibration on the body, and it does

385
00:22:44,080 --> 00:22:49,920
Speaker 1: everything from cause insomnia to digestive issues to motion sickness.

386
00:22:50,000 --> 00:22:51,960
Speaker 1: And this is bad vibration. I mean there's also like

387
00:22:51,960 --> 00:22:56,240
Speaker 1: good vibration. There's also good, good, good vibration. There's there's

388
00:22:56,320 --> 00:23:01,639
Speaker 1: vibrations that that that that vibrated a certain frequency certain

389
00:23:01,720 --> 00:23:03,640
Speaker 1: hurts and I don't remember what it is, but it's

390
00:23:03,640 --> 00:23:07,720
Speaker 1: like a low it's like a low frequency vibration. And

391
00:23:08,119 --> 00:23:12,800
Speaker 1: there's there's something called whole whole body vibration which UM

392
00:23:12,840 --> 00:23:15,560
Speaker 1: apparently GM is dealing with a problem right now. They

393
00:23:15,560 --> 00:23:20,840
Speaker 1: have like their their largest UM I guess maybe they're

394
00:23:20,880 --> 00:23:24,439
Speaker 1: Tahoe or something, but they're large SUVs. They had to

395
00:23:24,520 --> 00:23:28,640
Speaker 1: really strengthen the cage so that if it rolled over,

396
00:23:28,680 --> 00:23:32,000
Speaker 1: it wouldn't crush the bottom of the truck, wouldn't crush

397
00:23:32,040 --> 00:23:35,680
Speaker 1: the roof. But the thing is so rigid that when

398
00:23:35,680 --> 00:23:38,879
Speaker 1: it goes at like highway speeds, it vibrates at this

399
00:23:38,880 --> 00:23:42,880
Speaker 1: this frequency that's perfect, and it's giving the driver's motion sickness.

400
00:23:43,320 --> 00:23:45,760
Speaker 1: So yeah, there's all this weird stuff that happens from

401
00:23:45,880 --> 00:23:49,879
Speaker 1: vibrations and exposure to vibrations, and so that's whole body.

402
00:23:50,000 --> 00:23:54,159
Speaker 1: There's also hand arm vibration and um, there's something called

403
00:23:54,720 --> 00:24:00,880
Speaker 1: raynodes phenomenon and it's basically like your hands being exposed

404
00:24:00,880 --> 00:24:03,720
Speaker 1: to vibrations for that many hours out of a day.

405
00:24:03,720 --> 00:24:06,040
Speaker 1: And this can happen too if you're if you're working

406
00:24:06,040 --> 00:24:08,280
Speaker 1: with like a gas powered weed whacker all the time,

407
00:24:08,400 --> 00:24:11,360
Speaker 1: or but especially a jackhammer operator is going to run

408
00:24:11,400 --> 00:24:15,760
Speaker 1: into this. This circulation gets basically cut off from all

409
00:24:15,840 --> 00:24:18,439
Speaker 1: the the exposure of vibration in your fingers and it

410
00:24:18,480 --> 00:24:20,439
Speaker 1: can get so bad, especially when it's cold out, that

411
00:24:20,480 --> 00:24:23,679
Speaker 1: they just turn white. It's called blanching. They lose sensation

412
00:24:23,720 --> 00:24:26,320
Speaker 1: if you're lucky. If you're not lucky, there's a tremendous

413
00:24:26,320 --> 00:24:28,679
Speaker 1: amount of pain in them. You can't grip things, and

414
00:24:28,720 --> 00:24:32,120
Speaker 1: if you're a jackhammer operator, that's a big problem because

415
00:24:32,280 --> 00:24:34,600
Speaker 1: you need to be able to grip the jackhammer. Yeah,

416
00:24:34,720 --> 00:24:38,320
Speaker 1: and um, I mean weird psychological issues brought on from

417
00:24:38,320 --> 00:24:42,920
Speaker 1: like fatigue, that constant noise, headaches, and the insomnia that

418
00:24:42,960 --> 00:24:45,040
Speaker 1: can all lead to you know, you're kind of losing

419
00:24:45,040 --> 00:24:47,840
Speaker 1: it a little bit. Yeah, Yeah, you never really thought

420
00:24:47,840 --> 00:24:50,920
Speaker 1: about that. All of it put together, it's called vibration sickness.

421
00:24:50,960 --> 00:24:55,280
Speaker 1: And we're only now just starting to like really understand it. Uh,

422
00:24:55,320 --> 00:24:59,320
Speaker 1: shrapnel is also a danger, of course. Um and and

423
00:24:59,400 --> 00:25:01,400
Speaker 1: these are you know, if you're on a construction site,

424
00:25:01,440 --> 00:25:04,479
Speaker 1: you know all this stuff. But since you can go

425
00:25:04,520 --> 00:25:07,800
Speaker 1: out and rent a full fledged jackhammer because you want

426
00:25:07,800 --> 00:25:09,879
Speaker 1: to take out your driveway this weekend, I think a

427
00:25:09,920 --> 00:25:11,920
Speaker 1: lot of people go into it lightly. Like I've seen

428
00:25:11,960 --> 00:25:15,760
Speaker 1: those things on the road. I can do that. Be careful,

429
00:25:15,800 --> 00:25:19,000
Speaker 1: like don't do it and flip flops or tennis shoes,

430
00:25:19,800 --> 00:25:23,920
Speaker 1: you know, get get your big heavy hobnail boot. It's

431
00:25:24,000 --> 00:25:27,520
Speaker 1: the great Larry Munson said, put those on. Get your

432
00:25:27,520 --> 00:25:32,280
Speaker 1: ear protection where, eye protection where long pants, and you know,

433
00:25:32,359 --> 00:25:36,359
Speaker 1: don't be a dummy. It all seems like basic safety issues,

434
00:25:36,400 --> 00:25:39,280
Speaker 1: but I bet you there's been a dude with short

435
00:25:39,320 --> 00:25:43,840
Speaker 1: pants and a flip flops they tried to jackhammer something.

436
00:25:43,960 --> 00:25:49,119
Speaker 1: Jackhammer right there. It'll happen. Oh. They also important thing

437
00:25:49,160 --> 00:25:51,639
Speaker 1: too if you're doing this at home. Um, and you

438
00:25:51,680 --> 00:25:55,080
Speaker 1: don't like your sidewalk um that leads to your house,

439
00:25:55,560 --> 00:25:59,680
Speaker 1: get the electrical and gas companies out there. And I

440
00:25:59,680 --> 00:26:02,159
Speaker 1: don't think they charged for it, or they might, but

441
00:26:02,200 --> 00:26:03,920
Speaker 1: they'll they'll come out there with a little spray can

442
00:26:04,000 --> 00:26:06,199
Speaker 1: and they will show you and draw paint on the

443
00:26:06,200 --> 00:26:08,680
Speaker 1: ground where your gas lines and your power lines are

444
00:26:09,040 --> 00:26:10,960
Speaker 1: because you do not want to jack camer into either

445
00:26:11,040 --> 00:26:14,800
Speaker 1: of those. Not fun, Be careful, don't be a dummy.

446
00:26:15,119 --> 00:26:19,800
Speaker 1: Well that's ours a huh yeah, jack hammers the most

447
00:26:19,840 --> 00:26:22,760
Speaker 1: interesting tool on the on the planet. I actually got

448
00:26:22,760 --> 00:26:25,600
Speaker 1: one more thing, believe it or not. What uh? In

449
00:26:25,720 --> 00:26:30,000
Speaker 1: two thousand because these things are so loud, you know, uh,

450
00:26:30,119 --> 00:26:34,840
Speaker 1: the Department of Energies Brookhaven National Laboratory released a helium

451
00:26:35,000 --> 00:26:39,119
Speaker 1: jack camera called the Raptor, and it had some of

452
00:26:39,119 --> 00:26:41,960
Speaker 1: these things come with rubber boots to try and soften

453
00:26:42,000 --> 00:26:45,400
Speaker 1: the noise, but I don't think they do a great job. Um,

454
00:26:45,440 --> 00:26:48,000
Speaker 1: this thing actually less than the noise to eighty seven decibels.

455
00:26:48,240 --> 00:26:51,040
Speaker 1: It's like nothing, nothing that's like how loud I'm talking

456
00:26:51,119 --> 00:26:55,360
Speaker 1: right now. But apparently it never like caught on. Then

457
00:26:55,359 --> 00:26:58,400
Speaker 1: in two thousand eleven, another equipment maker had an electric

458
00:26:58,440 --> 00:27:02,439
Speaker 1: model that said it's faster than neumatic and it's only

459
00:27:02,480 --> 00:27:05,400
Speaker 1: a hundred decibels and they have sold a few. But apparently,

460
00:27:05,920 --> 00:27:09,000
Speaker 1: like breaking into the construction industry with a new type

461
00:27:09,040 --> 00:27:11,919
Speaker 1: of tool is super hard to do. I think in

462
00:27:12,000 --> 00:27:15,639
Speaker 1: New York especially, they were very resistant. The unions were like,

463
00:27:15,680 --> 00:27:18,520
Speaker 1: really won't work, We're not using those. That seems like

464
00:27:18,520 --> 00:27:21,560
Speaker 1: where they should do it, because um I looked it up.

465
00:27:21,600 --> 00:27:28,200
Speaker 1: Apparently six of noise complaints and from in New York

466
00:27:28,240 --> 00:27:33,000
Speaker 1: City we're jack hammers. That's almost thirty four thousand complaints

467
00:27:33,040 --> 00:27:38,119
Speaker 1: in a year jack hammering New York. And supposedly you're

468
00:27:38,160 --> 00:27:42,000
Speaker 1: not supposed to do it after six or before seven am,

469
00:27:42,359 --> 00:27:44,960
Speaker 1: but there they allow it in certain cases, and I

470
00:27:45,000 --> 00:27:47,560
Speaker 1: feel like that is like all the case is chuck

471
00:27:47,600 --> 00:27:53,800
Speaker 1: in a hotel nearby. It started five. That's all I got. Uh.

472
00:27:53,840 --> 00:27:55,879
Speaker 1: If you want to know more about Jack Camers, you

473
00:27:55,880 --> 00:27:58,399
Speaker 1: can type that one word into the search bar at

474
00:27:58,440 --> 00:28:00,560
Speaker 1: how stuff works dot com. And since so I said

475
00:28:00,760 --> 00:28:05,679
Speaker 1: Jack Camera, it's time for listener mail. I'm gonna call

476
00:28:05,720 --> 00:28:09,440
Speaker 1: this cool program for kids in Austin, Texas. Oh yeah,

477
00:28:09,480 --> 00:28:11,119
Speaker 1: I hope you guys are doing well. I've been listening

478
00:28:11,119 --> 00:28:13,680
Speaker 1: to the show for for some time. I'd like to

479
00:28:13,720 --> 00:28:16,080
Speaker 1: thank you for giving me the edge on many debates

480
00:28:16,080 --> 00:28:19,920
Speaker 1: and discussions. I live in Austin, Texas, and I'm writing

481
00:28:19,920 --> 00:28:22,040
Speaker 1: today let you know about a program I recently started

482
00:28:22,040 --> 00:28:24,480
Speaker 1: working for but I think you'll appreciate. It's called a

483
00:28:24,600 --> 00:28:28,399
Speaker 1: Totally Cool, Totally Art t c t A. It is

484
00:28:28,480 --> 00:28:30,960
Speaker 1: a free after school program designed to reach out to

485
00:28:31,080 --> 00:28:35,600
Speaker 1: utes youth and give them some exposure to the arts.

486
00:28:35,760 --> 00:28:38,680
Speaker 1: The class I teach is called the Art of Machines,

487
00:28:39,080 --> 00:28:42,640
Speaker 1: and we build various contraptions. We have sent you an

488
00:28:42,640 --> 00:28:46,080
Speaker 1: example project, which we call bugs that the students building

489
00:28:46,120 --> 00:28:48,600
Speaker 1: our class. Did we get this? We haven't got in yet.

490
00:28:48,680 --> 00:28:51,280
Speaker 1: I don't think, all right, I don't think i've seen this, Brian.

491
00:28:51,440 --> 00:28:54,920
Speaker 1: So you sent it? Awhile ago, Oh we did? If

492
00:28:54,960 --> 00:28:57,360
Speaker 1: you did, I don't know if we got it. I

493
00:28:57,440 --> 00:29:00,800
Speaker 1: don't know. We haven't got any all right. So if

494
00:29:00,840 --> 00:29:03,200
Speaker 1: it's recent, Brian, then it's on the way. If not,

495
00:29:03,320 --> 00:29:06,760
Speaker 1: then send it again. That was one of a kind. Uh.

496
00:29:06,880 --> 00:29:09,520
Speaker 1: See what you think about is the proto time? I

497
00:29:09,560 --> 00:29:13,000
Speaker 1: hope not, he said. My dogs go crazy for these things. Uh.

498
00:29:13,000 --> 00:29:16,240
Speaker 1: This is the actual anniversary of the program. We're trying

499
00:29:16,280 --> 00:29:17,680
Speaker 1: to let people know about it so it can be

500
00:29:17,720 --> 00:29:21,880
Speaker 1: around for another twenty years. We also have other classes painting, film,

501
00:29:22,000 --> 00:29:25,520
Speaker 1: fiber arts, and photography. Anyway, I was just hoping maybe

502
00:29:25,520 --> 00:29:27,960
Speaker 1: you could give a quick shout out for totally Cool,

503
00:29:28,000 --> 00:29:31,360
Speaker 1: totally Art in Austin. It's so totally cool and you

504
00:29:31,400 --> 00:29:33,200
Speaker 1: can just look that up on Google or go to

505
00:29:33,600 --> 00:29:38,400
Speaker 1: uh h t t P S colon slash slash Austin,

506
00:29:38,480 --> 00:29:41,560
Speaker 1: Texas dot g O V slash t C t A.

507
00:29:42,120 --> 00:29:45,040
Speaker 1: That's nice. That's a secure site. Yeah, that's from Brian

508
00:29:45,080 --> 00:29:47,680
Speaker 1: fried tog and good work, buddy. And we're gonna be

509
00:29:47,720 --> 00:29:50,480
Speaker 1: in Austin for south By Southwest this year. Yeah. Do

510
00:29:50,520 --> 00:29:52,600
Speaker 1: you know if they're if we're gonna be selling tickets

511
00:29:52,680 --> 00:29:54,840
Speaker 1: or if there's like a registry or what. I don't know.

512
00:29:54,960 --> 00:29:56,680
Speaker 1: We'll find out and let everyone know. But I believe

513
00:29:56,720 --> 00:30:00,520
Speaker 1: it's going to our deal Live podcasts going down Sunday night. Yeah,

514
00:30:00,800 --> 00:30:05,120
Speaker 1: and um, but we're going to be around cooltown cool

515
00:30:05,640 --> 00:30:10,800
Speaker 1: look out for us Sunday night. Okay. Indeed, uh if

516
00:30:10,840 --> 00:30:12,520
Speaker 1: you want to get in touch of this, you can

517
00:30:12,520 --> 00:30:14,720
Speaker 1: tweak to us at s Y s K podcast. You

518
00:30:14,760 --> 00:30:16,840
Speaker 1: can join us on Facebook dot com slash Stuff you

519
00:30:16,880 --> 00:30:19,160
Speaker 1: Should Know. You can send us an email to Stuff

520
00:30:19,200 --> 00:30:21,760
Speaker 1: Podcast at how stuff Works dot com and has always

521
00:30:21,840 --> 00:30:23,760
Speaker 1: joined us at our home on the web, Stuff you

522
00:30:23,800 --> 00:30:28,600
Speaker 1: Should Know dot com. Stuff you Should Know is a

523
00:30:28,600 --> 00:30:31,720
Speaker 1: production of iHeart Radio's How Stuff Works for more podcasts

524
00:30:31,720 --> 00:30:33,640
Speaker 1: for my heart Radio because at the iHeart Radio app,

525
00:30:33,720 --> 00:30:36,360
Speaker 1: Apple Podcasts, or wherever you listen to your favorite shows,