WEBVTT - How Cranes Work 0:00:00.800 --> 0:00:03.760 Hey, everybody, we're coming to the Pacific Northwest. So if 0:00:03.800 --> 0:00:06.000 you live in that area or can get on a 0:00:06.040 --> 0:00:07.840 plane to go to that area, or a boat or 0:00:07.920 --> 0:00:11.320 snowshoe whatever, we'll see you at the end of January. 0:00:11.680 --> 0:00:14.160 That's right, brand new show, brand new topic. We don't 0:00:14.160 --> 0:00:16.200 even know what it is yet, but we'll be in Seattle, 0:00:16.280 --> 0:00:20.640 Washington on January twenty fourth, Portland on January twenty fifth, 0:00:20.920 --> 0:00:24.440 and then our annual trip to San Francisco's Sketch Fest 0:00:24.720 --> 0:00:27.800 on January twenty sixth in Seattle. We're counting on you. 0:00:28.080 --> 0:00:29.880 We're at the Paramount this year and that's a lot 0:00:29.960 --> 0:00:31.760 of seats, so we need a lot of your lovely 0:00:31.800 --> 0:00:32.800 faces in the audience. 0:00:33.040 --> 0:00:35.880 Yes, So get THEE two Stuff youshould Know dot com 0:00:35.920 --> 0:00:38.240 and click on the tour button to get all your facts. 0:00:38.560 --> 0:00:41.479 Or you can go to link tree slash sysk and 0:00:41.520 --> 0:00:43.839 get the same links and the same facts and we'll 0:00:43.840 --> 0:00:46.080 see you guys in January. We can't wait. 0:00:48.080 --> 0:00:54.360 Welcome to Stuff You Should Know, a production of iHeartRadio. 0:00:57.760 --> 0:01:00.600 Hey, and welcome to the podcast. I'm Josh Chuck and 0:01:00.680 --> 0:01:03.360 Jerry's here too, and this is Stuff you Should Know. 0:01:04.760 --> 0:01:05.720 The Tanka edition. 0:01:07.040 --> 0:01:10.080 M you know, I had a terrible thought earlier that 0:01:10.160 --> 0:01:15.720 it might be fun to release this episode on cranes 0:01:16.000 --> 0:01:19.720 and then one of the bird cranes, and then we 0:01:19.800 --> 0:01:22.880 have another one coming up that I just you know, 0:01:23.000 --> 0:01:26.440 asked our friend Dave Ruse to get on that. Could 0:01:26.560 --> 0:01:28.280 we could also do you know that one is? Did 0:01:28.319 --> 0:01:30.360 you see that? I don't want to give it away. 0:01:30.880 --> 0:01:34.480 It's also a food in a cartoon. I don't We 0:01:34.480 --> 0:01:36.360 could do one on the food in the cartoon with 0:01:36.400 --> 0:01:39.119 the same title, and we should just start doing even 0:01:39.160 --> 0:01:40.280 more confusing titles. 0:01:40.560 --> 0:01:42.199 Okay, I think that's a great idea. 0:01:43.160 --> 0:01:45.199 So we got to do one on the bird cranes next. 0:01:45.400 --> 0:01:47.840 Okay, so and we'll just title them the same thing. 0:01:48.440 --> 0:01:53.520 Yeah, okay, how cranes work. How cranes work. Figure, people 0:01:53.520 --> 0:01:55.480 won't know what they're because that happens a lot anyway. 0:01:55.520 --> 0:01:58.320 Like when we did Nirvana, we actually put not the 0:01:58.360 --> 0:01:59.240 band right. 0:01:59.320 --> 0:02:02.520 Right, That was the opposite of being purposely confusing. 0:02:02.880 --> 0:02:03.560 Yeah, exactly. 0:02:03.960 --> 0:02:06.760 Today in this episode a couple of minutes in now 0:02:06.800 --> 0:02:10.320 we'll finally reveal we're talking about the construction version of Cranes. 0:02:10.960 --> 0:02:11.560 That's right. 0:02:12.080 --> 0:02:14.239 Yeah, that's why I said the Tonka edition, which is 0:02:14.280 --> 0:02:17.000 probably a bit of a giveaway. Were you into Tonka? 0:02:17.680 --> 0:02:19.880 I wasn't that into Tonka. 0:02:19.960 --> 0:02:20.240 Okay. 0:02:20.280 --> 0:02:22.040 I think I had a truck or something, but I wasn't. 0:02:22.520 --> 0:02:24.680 I was a sensitive boy. I wasn't banging trucks around 0:02:24.680 --> 0:02:25.360 and building things. 0:02:25.400 --> 0:02:26.000 I was too. 0:02:29.400 --> 0:02:31.800 I also feel like we've gone back in time because 0:02:31.840 --> 0:02:34.080 this feels like a very ten years ago thing for us. 0:02:35.200 --> 0:02:37.840 Oh yeah, the article on the House of Work site 0:02:37.880 --> 0:02:42.520 was written by Marshall Brain himself. Oh but mister Ruse 0:02:42.520 --> 0:02:43.640 helps us out with this one. 0:02:44.200 --> 0:02:45.799 Yeah, okay, was that the deal? 0:02:47.200 --> 0:02:49.760 No, it wasn't. I actually didn't know that there was something. 0:02:49.800 --> 0:02:52.360 I was looking up some fact or whatever and that 0:02:52.560 --> 0:02:54.840 article came up and I was like, oh, oh okay, 0:02:54.919 --> 0:03:00.440 So yeah, no, that wasn't the deal. But I don't 0:03:00.480 --> 0:03:02.240 remember what made me want to do this. 0:03:02.320 --> 0:03:04.760 I think it was just probably saw one. Huh. 0:03:04.800 --> 0:03:08.280 I don't think so. I mean, I've seen plenty, but no, 0:03:08.680 --> 0:03:10.880 I really don't think that's what did it. I don't 0:03:10.919 --> 0:03:12.600 know where it came from, but I think it's just 0:03:12.720 --> 0:03:15.280 kind of like a lifelong fascination with it. Like I'm 0:03:16.000 --> 0:03:18.280 not like a crane aphile or anything like that. I 0:03:18.280 --> 0:03:20.919 can't tell you, like, you know, the names of the operators. 0:03:20.919 --> 0:03:24.200 I don't have like trading cards or anything. But I 0:03:24.240 --> 0:03:29.639 do find construction stuff pretty impressive from like a distance, 0:03:30.040 --> 0:03:30.720 you know what I mean. 0:03:30.600 --> 0:03:32.440 Totally, Yeah, you see the people. 0:03:33.000 --> 0:03:36.160 Yeah, when I see one of those things going, I 0:03:36.200 --> 0:03:38.600 always stop and take a look and just think, my lord, 0:03:38.720 --> 0:03:40.200 what have we come up with now? 0:03:40.400 --> 0:03:42.520 Yeah, and we should say there's a ton of different cranes. 0:03:42.560 --> 0:03:45.480 So this is specifically tower cranes. And we didn't call 0:03:45.520 --> 0:03:49.400 the episode that just because apparently we're going to confuse everybody. 0:03:49.760 --> 0:03:52.440 No tower cranes would have given it away. But we're 0:03:52.440 --> 0:03:54.480 talking about a very specific kind of crane, and it 0:03:54.560 --> 0:03:57.400 is the construction crane, the kind you see on construction sites, 0:03:57.720 --> 0:04:00.200 especially these days if you're driving through toront know. 0:04:01.440 --> 0:04:05.120 Yeah, apparently Dave dug up some stats on crane usage. 0:04:05.120 --> 0:04:06.240 Who knew that existed? 0:04:07.080 --> 0:04:11.880 And Toronto right now leads the way in North America 0:04:11.960 --> 0:04:14.360 with the most operating cranes. I guess they're building a 0:04:14.400 --> 0:04:17.360 lot there. Yeah, they've got one hundred and twenty one going. 0:04:17.960 --> 0:04:22.839 But one boy in the twenty tens he found that 0:04:22.920 --> 0:04:26.120 there were about one hundred thousand cranes operating around the 0:04:26.120 --> 0:04:29.359 world during that big you know, twenty tens construction boom. 0:04:29.480 --> 0:04:32.080 Yeah, and I mean that's a really good proxy for 0:04:32.279 --> 0:04:36.200 how the global construction industry is doing, because I guess 0:04:36.240 --> 0:04:41.200 I think you essentially can't undertake any decent sized construction 0:04:41.320 --> 0:04:45.799 project without a tower crane of some sort on your site. 0:04:46.320 --> 0:04:48.920 Yeah, if you want height, you're gonna need a crane. 0:04:49.240 --> 0:04:51.599 Yeah, you want height, you want to very quickly and 0:04:51.640 --> 0:04:55.880 easily move like a pile of you know, steel girders 0:04:55.960 --> 0:04:59.880 or rebar like, Yeah, you can break down that bunch 0:04:59.880 --> 0:05:01.920 of rebar and have a bunch of guys just kind 0:05:01.960 --> 0:05:03.839 of card it from one side to the other, or 0:05:04.279 --> 0:05:07.520 you can save about twenty man hours and just lift 0:05:07.560 --> 0:05:09.520 it up and move it over with the crane. They're 0:05:09.640 --> 0:05:12.239 they're invaluable for a construction site. 0:05:13.000 --> 0:05:13.320 They are. 0:05:13.400 --> 0:05:15.880 And he also found this cool stat which is the 0:05:15.960 --> 0:05:20.040 largest one going right now from I don't know how 0:05:20.040 --> 0:05:23.200 to say that Kroll cranes that oh has a null set. 0:05:23.360 --> 0:05:27.279 It's Danish, so yeah, some some Danish pronunciation crue. But 0:05:27.960 --> 0:05:31.240 the K ten thousand, my friend, as you know and 0:05:31.279 --> 0:05:35.080 my friends out there listening, that can lift about one 0:05:35.160 --> 0:05:39.080 hundred SUVs five hundred and twenty eight thousand pounds, Yeah, 0:05:39.320 --> 0:05:42.760 and like one hundred SUVs. Yeah, not like escapes either, 0:05:42.839 --> 0:05:45.839 like normal sized SUVs. 0:05:45.720 --> 0:05:48.280 At googleed like mid sized fall bo asuv bit. 0:05:49.320 --> 0:05:51.920 Yeah, it makes sense. It's a lot of SUVs all 0:05:51.960 --> 0:05:54.960 at once that it could lift up. And that's as 0:05:54.960 --> 0:05:57.560 we'll see. It depends on where it's lifting from and 0:05:57.600 --> 0:06:00.640 all that. There's a lot of a lot of variables 0:06:00.640 --> 0:06:04.120 and factors, and all of that put together, combined with 0:06:04.240 --> 0:06:09.320 the danger and just the unique situation anybody who's operating 0:06:09.320 --> 0:06:14.919 a crane is in, makes it a really demanding, high 0:06:14.920 --> 0:06:19.440 pressure job. I saw one crane operator basically liking it 0:06:19.440 --> 0:06:23.400 to eight hours of NonStop surgery essentially because of the 0:06:24.160 --> 0:06:26.839 attention to detail you have to have at all times. 0:06:27.200 --> 0:06:29.320 You have to anticipate what people on the ground are 0:06:29.400 --> 0:06:32.240 going to do based on the body movement. And you're 0:06:32.279 --> 0:06:35.839 working with your hands like you use two joysticks and 0:06:35.880 --> 0:06:39.440 it seems very simple, but you can make the crane 0:06:39.480 --> 0:06:42.280 do all sorts of interesting things with just those two joysticks. 0:06:42.600 --> 0:06:45.520 And depending on how busy the construction site is, you 0:06:45.640 --> 0:06:49.200 might not stop moving those joysticks essentially the entire day. 0:06:49.760 --> 0:06:54.400 Yeah, all sorts of things. How about a solfshoe. Sure, yeah, 0:06:54.400 --> 0:06:59.000 it's like a battle zone. Remember that game No Battles. 0:06:59.080 --> 0:07:00.800 I think we even talked about this. That's the one 0:07:00.839 --> 0:07:03.960 where you look through the arcade game where it was 0:07:04.000 --> 0:07:08.000 made out of like green what's it called when it's 0:07:08.040 --> 0:07:10.400 just lined out and not colored in like a vector 0:07:11.160 --> 0:07:13.080 like a yeah, sort of, and you had a left 0:07:13.080 --> 0:07:15.800 and right joystick like you were driving a tank around, okay, 0:07:15.880 --> 0:07:18.080 and looking and looking through an eyepiece. 0:07:17.800 --> 0:07:20.000 Yes, I remember now. And then that made me talk 0:07:20.040 --> 0:07:25.360 about Sea Wolf. I think the Paris game basically yeah, 0:07:25.960 --> 0:07:26.480 all right. 0:07:26.480 --> 0:07:29.600 Yeah, but you can move on from market, yeah, exactly. 0:07:29.920 --> 0:07:36.040 It's kind of like that, but with real death involved potentially, right. 0:07:37.280 --> 0:07:40.520 And this whole thing was the idea of a German 0:07:40.640 --> 0:07:47.360 construction engineer post World War two named Hans Liba, because 0:07:47.480 --> 0:07:50.280 Hans Liba had a lot of Germany and all of 0:07:50.280 --> 0:07:52.400 Germany had a lot of Germany to rebuild, especially in 0:07:52.400 --> 0:07:55.280 the city centers. Yeah, post World War two, and so 0:07:55.400 --> 0:07:57.560 he came up with this idea in nineteen forty nine 0:07:58.040 --> 0:08:00.440 of a mobile tower crane that you could you know, 0:08:00.520 --> 0:08:04.160 take from place to place. What you would say now, 0:08:04.200 --> 0:08:07.040 it was probably what we would call a luffing crane 0:08:07.080 --> 0:08:09.960 of the UFFI and G which we'll talk about a 0:08:09.960 --> 0:08:12.760 little bit later on when we're detailing cranes. So not 0:08:12.880 --> 0:08:15.080 that you know the hugest, super tall ones, but it 0:08:15.160 --> 0:08:16.840 was nineteen forty nine. It was a good start. 0:08:17.240 --> 0:08:20.520 Yeah, I mean, give liber a break, Like he's the 0:08:20.520 --> 0:08:22.720 one who essentially said, like, we need cranes, and we 0:08:22.720 --> 0:08:25.400 can do more with cranes, like there would not be 0:08:25.440 --> 0:08:31.080 skyscrapers without tower cranes. Sorry, face it. Yeah, and also 0:08:31.160 --> 0:08:32.800 we should probably give them their due. It goes all 0:08:32.800 --> 0:08:36.080 the way back to at the very least the sixth 0:08:36.080 --> 0:08:38.520 century BCE Greeks, who were the first ones to start 0:08:38.600 --> 0:08:43.920 using cranes and construction projects. Yeah, so basically nothing happened 0:08:43.960 --> 0:08:48.800 for twenty six hundred years roughly until Hans Lieber came along. 0:08:49.640 --> 0:08:52.120 These climbing cranes were going to detail came about in 0:08:52.160 --> 0:08:55.800 the nineteen sixties thanks to and these things are pretty remarkable. 0:08:55.840 --> 0:08:58.080 That's the really giant tall ones that you see that 0:08:58.640 --> 0:09:02.880 kind of build themselves and boy, just stick around everybody 0:09:03.000 --> 0:09:06.640 because it gets pretty hot. But they were came to 0:09:06.679 --> 0:09:09.960 his courtesy of a couple of Ozzie brothers Ted and 0:09:10.200 --> 0:09:14.920 Eric Favell, I guess in nineteen sixty two. And because 0:09:14.960 --> 0:09:18.880 they were Australian, of course, they called them kangaroo jumping cranes. 0:09:19.920 --> 0:09:23.760 Like for real, I'll bet everyone but the Australians called 0:09:23.760 --> 0:09:24.000 it that. 0:09:25.240 --> 0:09:28.400 Maybe so, but they helped to erect the Twin Towers 0:09:28.400 --> 0:09:29.120 in New York City. 0:09:29.600 --> 0:09:32.240 Yeah, apparently so did the K ten thousand from what 0:09:32.320 --> 0:09:33.040 I understand. 0:09:33.760 --> 0:09:35.199 Oh, so that one's been around. Huh. 0:09:35.280 --> 0:09:37.120 Yeah. I think a lot of cranes helped build the 0:09:37.200 --> 0:09:40.920 Twin Towers. But you couldn't have built the Twin Towers 0:09:40.920 --> 0:09:45.640 without climbing cranes. And like you said, man, well, if 0:09:45.679 --> 0:09:49.240 you understand how the climbing cranes work, they're just it's amazing. 0:09:49.280 --> 0:09:51.720 But it also answers a really great question, like how 0:09:51.720 --> 0:09:53.960 did those little cranes get all the way on top 0:09:54.040 --> 0:09:58.720 of a skyscraper? Just wait, just you wait, the eight 0:09:58.800 --> 0:09:59.839 year old kid in all. 0:10:01.840 --> 0:10:03.800 But we're going to be mainly talking about what's known 0:10:03.840 --> 0:10:06.320 as a hammerhead tower crane, and that is when you 0:10:06.360 --> 0:10:09.680 look up in the sky and you see a giant, 0:10:09.720 --> 0:10:15.720 giant tall tea, essentially with a very long side of 0:10:15.760 --> 0:10:19.000 that tea horizontal tea and a shorter side coming out 0:10:19.000 --> 0:10:20.240 the other side of the tea. 0:10:20.360 --> 0:10:22.959 It's like an inexpertly written tea. 0:10:23.880 --> 0:10:25.480 It looks like one of my daughter's teas. 0:10:25.679 --> 0:10:28.600 Okay, well, I would call her inexpert at this point, 0:10:28.640 --> 0:10:29.600 she's just starting out. 0:10:30.320 --> 0:10:32.640 Yeah, her penmanship is terrible. We're working on it. 0:10:33.440 --> 0:10:35.959 Just teach her how to cut letters out of magazines. 0:10:36.360 --> 0:10:37.520 We were, yeah, I should. 0:10:37.559 --> 0:10:39.240 We were working on her math last night and she 0:10:39.320 --> 0:10:42.040 was having me check her actual math work and I said, your. 0:10:41.920 --> 0:10:43.000 Math is all perfect. 0:10:43.280 --> 0:10:46.040 I said, I'd like to see work on just sort 0:10:46.080 --> 0:10:48.480 of the neatness in how you display your answers. She 0:10:48.559 --> 0:10:50.760 was like, what it's like, Well, you know, I can 0:10:51.040 --> 0:10:53.000 look at this. I was kind of pointing things out 0:10:53.000 --> 0:10:56.280 in a very Larry David kind of way, so I'm 0:10:56.320 --> 0:10:57.160 not sure if it's sunk in. 0:10:57.200 --> 0:10:57.640 We'll see. 0:10:57.760 --> 0:10:59.280 Did she get the curb references? 0:11:00.080 --> 0:11:03.160 Oh, she totally did. Jeff Garland's your favorite. 0:11:03.960 --> 0:11:07.559 So all right, well, let's talk about the components of 0:11:07.600 --> 0:11:13.720 a crane, because it's actually extraordinarily simple. It's extraordinarily it's 0:11:13.720 --> 0:11:16.240 just as it's just as easy as that. They're really 0:11:16.360 --> 0:11:22.000 simple machines, but they're intricate in how precise they need 0:11:22.040 --> 0:11:22.280 to be. 0:11:23.280 --> 0:11:26.199 Yeah, so we gotta start. Let's go bottom up. You 0:11:26.200 --> 0:11:27.000 want to go bottom up? 0:11:29.920 --> 0:11:31.520 Okay, yeah, that seems all right. 0:11:32.320 --> 0:11:34.080 All right, Well, we got to start with a foundation 0:11:34.240 --> 0:11:37.800 because obviously, if something is this tall and they're you know, 0:11:37.880 --> 0:11:42.000 lifting things like one hundred SUVs, basically you're going to 0:11:42.080 --> 0:11:44.640 have to have a heck of a foundation and that's 0:11:44.640 --> 0:11:47.000 where you're going to start. These things are actually sunk 0:11:47.480 --> 0:11:51.640 into a concrete pad. The concrete pad for the largest 0:11:51.679 --> 0:11:55.920 ones weighs about four hundred thousand pounds, and it is 0:11:56.040 --> 0:11:58.160 it's not like they do this in blocks and sections. 0:11:58.160 --> 0:12:02.840 It's one big long con crete pour through rebar to 0:12:03.040 --> 0:12:05.800 just make that thing as solid as it was built 0:12:05.800 --> 0:12:07.559 into the actual bedrock of the earth. 0:12:07.640 --> 0:12:11.280 Yeah. They essentially are creating their own bedrock to pour around. 0:12:11.280 --> 0:12:14.600 The foundation of the mast is what it's called. That 0:12:14.679 --> 0:12:17.480 part of the crane that rises upward from the ground. 0:12:18.120 --> 0:12:21.000 That's called the tower or the mast, and the bottom 0:12:21.040 --> 0:12:26.680 of the mast is cemented into an enormous multi hundred 0:12:26.720 --> 0:12:30.560 thousand pounds block of concrete. It's pretty impressive in and 0:12:30.600 --> 0:12:34.360 of itself, right totally, So the mast, you might if 0:12:34.400 --> 0:12:38.320 you look closely, you'll see it's made of essentially trusses, 0:12:38.360 --> 0:12:41.280 squares and trusses. And if you will refer to our 0:12:41.320 --> 0:12:45.160 Bridges episode, we came face to face with the realization 0:12:45.280 --> 0:12:50.560 that trustes are the most beautifully strong structure on Earth essentially. 0:12:51.120 --> 0:12:54.520 So it makes sense because as we'll see, you want 0:12:54.559 --> 0:13:01.000 these the mast sections to be fairly lightweight, and you 0:13:01.040 --> 0:13:04.960 can make something lightweight if you use trusses. So I'm 0:13:05.040 --> 0:13:07.880 sure it was Hans Leber who figured that one out, 0:13:07.920 --> 0:13:08.880 like right out of the gate. 0:13:09.640 --> 0:13:14.160 Yeah, absolutely, depending on you know your project, is how 0:13:14.200 --> 0:13:17.000 tall your tower is going to be, because like you said, 0:13:17.040 --> 0:13:20.440 they well you'll see how they build themselves. But you 0:13:20.480 --> 0:13:22.400 don't want one that's taller than it needs to be, 0:13:22.840 --> 0:13:25.520 and obviously you want it tall enough. The tallest ones 0:13:25.520 --> 0:13:30.640 are over four hundred feet tall, and the more standard 0:13:30.640 --> 0:13:33.360 wins are and then like two hundred and fifty foot range. 0:13:33.160 --> 0:13:36.080 Right, I guess that with a K ten thousand, and 0:13:36.120 --> 0:13:39.800 I think some I think China just released like the 0:13:39.920 --> 0:13:44.320 largest toughest crane around. It's a real competitor to the 0:13:44.720 --> 0:13:48.040 K ten thousand. Button surprised me anything over about four 0:13:48.120 --> 0:13:51.679 hundred feet. We haven't really cracked the physics of a 0:13:51.720 --> 0:13:55.840 free standing tower crane. Beyond that, it just it's too unstable, 0:13:55.880 --> 0:14:00.640 it's too risky, it doesn't work. So let's say we 0:14:00.679 --> 0:14:02.880 top out at about two hundred and two fifty I 0:14:02.920 --> 0:14:03.959 think you said something like. 0:14:03.920 --> 0:14:06.040 That, Yeah, two fifty ish. 0:14:06.400 --> 0:14:09.440 The top I don't know. Ten percent of that probably 0:14:09.800 --> 0:14:12.920 would be made up of what's called the cat's head. 0:14:13.360 --> 0:14:16.520 And the cat's head is essentially the top of the 0:14:16.559 --> 0:14:20.160 crane that all of the parts that actually do the 0:14:20.240 --> 0:14:25.040 work above the mast connect to. Okay, yeah, So for example, 0:14:25.080 --> 0:14:28.960 you have the slewing unit, and the slewing unit is 0:14:29.760 --> 0:14:32.200 at the neck basically the base of the head of 0:14:32.240 --> 0:14:35.880 that cat's head, and it's essentially a huge disk that 0:14:36.240 --> 0:14:38.760 the whole thing can spin around on three hundred and 0:14:38.800 --> 0:14:42.880 sixty Degrease, go buy a work site tower crane. Shout 0:14:42.960 --> 0:14:45.560 up to him, say do me a three sixty. Any 0:14:45.600 --> 0:14:47.800 crane operator worth their salt will just stop what they're 0:14:47.800 --> 0:14:49.720 doing and do a three sixty for you to show 0:14:50.120 --> 0:14:51.960 just how amazing the slewing unit is. 0:14:52.880 --> 0:14:55.440 Uh. Did you know what the definition of slew is? 0:14:56.360 --> 0:14:59.480 Uh? Does it have something to do with seattle? 0:15:00.600 --> 0:15:06.560 No, it's to turn violently or uncontrollably. No, yeah, that's 0:15:06.560 --> 0:15:11.880 what the verb is, you know, undergoing slewing, or as 0:15:11.880 --> 0:15:15.320 a noun a violent or uncontrollable sliding movement. 0:15:15.600 --> 0:15:19.200 Chuck, I tip my Breton cap to you for looking 0:15:19.280 --> 0:15:21.880 up that word in year fifteen. Man, way to go. 0:15:22.000 --> 0:15:25.400 Well, I didn't know what it meant, so I appreciate that. 0:15:25.480 --> 0:15:28.280 But it's just I don't know. I'm sure someone can 0:15:28.320 --> 0:15:28.840 explain this. 0:15:29.000 --> 0:15:31.120 Boy. I'm hoping we hear from crane people. 0:15:31.280 --> 0:15:31.480 Oh. 0:15:31.520 --> 0:15:33.360 I hope so too, And I hope they're like, gosh, 0:15:33.360 --> 0:15:36.120 you guys sure got it right, Not like I'm never listening. 0:15:35.800 --> 0:15:38.480 To you again like the scuba people. 0:15:38.640 --> 0:15:41.600 So the slewing unit is the it's where the mast 0:15:41.880 --> 0:15:44.880 and the top functioning part of the crane meat and 0:15:44.920 --> 0:15:48.240 it spins it around. It's what allows the whole thing 0:15:48.240 --> 0:15:49.160 to spin around. 0:15:49.120 --> 0:15:49.400 All right. 0:15:49.440 --> 0:15:50.920 The next thing we have is that the you know, 0:15:50.960 --> 0:15:53.640 the big long arm, that big working arm that extends 0:15:53.640 --> 0:15:55.720 way out, the horizontal arm. 0:15:55.960 --> 0:16:00.080 That lifts the stuff. Although it doesn't actually lift the stuff, 0:16:00.080 --> 0:16:00.880 it holds the stuff. 0:16:01.280 --> 0:16:04.680 That's called the jib arm. A jib is it's not 0:16:05.160 --> 0:16:08.040 specific to cranes or all kinds of jib arms. If 0:16:08.080 --> 0:16:10.040 you've ever worked on a movie set and they you know, 0:16:10.560 --> 0:16:13.160 have crane shots and stuff like that. Those are called 0:16:13.240 --> 0:16:15.880 jibs as well. 0:16:15.880 --> 0:16:18.080 Why is it funny? Why are you laughing at everything. 0:16:18.000 --> 0:16:21.520 Because you're drunk? No, I'm not drunk. I'm drunk ish, 0:16:21.720 --> 0:16:24.440 but not fully, not enough to explain my last finess. 0:16:25.960 --> 0:16:28.800 So the jib can go out, you know, a few 0:16:28.880 --> 0:16:33.280 hundred feet sometimes for the extra large ones, and it 0:16:33.560 --> 0:16:37.880 basically allows it to lift things up, swing it over, 0:16:38.080 --> 0:16:42.520 and drop it off somewhere else. And if you're thinking, well, 0:16:42.880 --> 0:16:45.520 that sounds a lot more complicated than that, it is, 0:16:45.520 --> 0:16:47.520 and it isn't. It's not in that that's what that 0:16:47.640 --> 0:16:50.480 jib arm is there for. But there is a something 0:16:50.520 --> 0:16:53.320 called a load chart that you know, you really got 0:16:53.320 --> 0:16:56.360 to be well acquainted with, because if you're picking up 0:16:56.400 --> 0:16:58.840 something from the very tippy end of that three hundred 0:16:58.840 --> 0:17:01.360 foot jib, not gonna be able to lift as much 0:17:01.440 --> 0:17:03.720 as you would if that thing were pulled back to 0:17:03.840 --> 0:17:06.760 like fifty or sixty feet because of physics, it would 0:17:06.760 --> 0:17:07.160 tip over. 0:17:07.359 --> 0:17:11.800 Yeah, you can't lift the full load of Volvo mid 0:17:11.840 --> 0:17:15.199 sized SUVs that you could if it's much closer, if 0:17:15.240 --> 0:17:18.280 the load's closer to the center of gravity for the 0:17:18.320 --> 0:17:19.280 whole crane, right. 0:17:20.040 --> 0:17:24.080 Yeah, So I guess that maximum lift capacity would be 0:17:24.240 --> 0:17:29.120 when it's at its peak of you know position, yeah, 0:17:29.119 --> 0:17:31.280 peak balance, like lifting, yeah, peak balance. 0:17:31.359 --> 0:17:35.240 Right, So it would not necessarily be I don't know. 0:17:35.320 --> 0:17:37.400 It depends on the weight of the load where that 0:17:37.560 --> 0:17:42.480 peak of balance would be, right. So, but for the 0:17:42.560 --> 0:17:45.240 heaviest for its maximum lift, it would probably be pretty 0:17:45.280 --> 0:17:50.000 much close to the center of the jib arm. Maybe, yeah, No, 0:17:50.080 --> 0:17:54.080 I think it's actually a little closer regardless. The thing 0:17:54.119 --> 0:17:56.879 that I think is ingenious about all this is that 0:17:56.920 --> 0:18:00.800 the jib arm never moves. It's static. It might move 0:18:00.880 --> 0:18:04.800 like swiveling, but it's not swiveling itself. It's just swiveling 0:18:04.800 --> 0:18:08.359 with the rest of the whole working part of the crane, right, 0:18:08.400 --> 0:18:12.160 So the jib arm stays where it is. So they've 0:18:12.200 --> 0:18:15.320 actually designed everything else around the fact that the jib 0:18:15.400 --> 0:18:19.879 arm stays straight, and that's what allows loads to like 0:18:19.960 --> 0:18:22.399 move toward the cab, away from the cab, toward the 0:18:22.480 --> 0:18:24.480 end of the arm, toward the inside of the arm. 0:18:24.560 --> 0:18:28.840 The jib arm through a bunch of pulleys and specifically 0:18:28.960 --> 0:18:32.399 a something called the trolley which is attached to the 0:18:32.480 --> 0:18:35.160 underside of the jib arm, and it's just what moves 0:18:35.200 --> 0:18:38.359 back and forth along the jib arm, allowing you to 0:18:38.480 --> 0:18:41.520 kind of move a load, you know, closer or further away, 0:18:41.560 --> 0:18:43.520 depending on where the people on the ground need it. 0:18:44.440 --> 0:18:44.840 Yeah. 0:18:44.920 --> 0:18:47.640 Like if you stood up and put one arm out, 0:18:48.280 --> 0:18:51.479 that arm would just stay there. And there's and picture 0:18:51.600 --> 0:18:54.760 a little little carriage on the underside of your arm 0:18:55.119 --> 0:18:57.360 that slides, you know, down to your fingertips and back 0:18:57.359 --> 0:18:57.919 to your arm pit. 0:18:58.000 --> 0:19:00.960 Yeah, that stuff that hangs down from your bicep. When 0:19:01.000 --> 0:19:03.720 you just let your arms stay there, imagine that moving 0:19:03.720 --> 0:19:04.640 towards your fingers. 0:19:05.160 --> 0:19:09.800 Oh god, it's called aging. So your arms stays straight 0:19:09.800 --> 0:19:11.640 the whole time, and that little carriage on the underside 0:19:11.640 --> 0:19:12.879 of your arm is what's moving stuff. 0:19:12.920 --> 0:19:14.320 And then if you want to move. 0:19:14.200 --> 0:19:16.800 It from here to there, you turn your whole body 0:19:16.840 --> 0:19:19.040 and you go er while you do it. 0:19:19.119 --> 0:19:19.320 Yep. 0:19:19.560 --> 0:19:21.879 So you know your kids will laugh and stuff, but 0:19:21.960 --> 0:19:24.120 that's essentially it. That arms just stays there. 0:19:24.200 --> 0:19:26.560 Yeah, and when you turn your whole body, your hips are. 0:19:26.400 --> 0:19:30.040 Slewing, right, I guess so like Elvis. 0:19:30.520 --> 0:19:34.080 So then the hook, the thing that actually hooks onto 0:19:34.080 --> 0:19:37.760 the load that's just connected to the trolley. Right, it's 0:19:37.800 --> 0:19:40.920 pretty neat because you actually raise and lower the hook. 0:19:41.560 --> 0:19:44.520 So it's connected to a system of pulleys, like a 0:19:44.520 --> 0:19:48.440 whole bunch of different pulleys. And when you connect these 0:19:48.440 --> 0:19:51.399 pulleys together, it's called reaving. And so there's a certain 0:19:51.440 --> 0:19:54.879 way to connect all these pulleys to maximize the just 0:19:54.920 --> 0:19:57.959 the grip and traction they have while also allowing like 0:19:58.000 --> 0:20:02.280 the heaviest possible load to kind of hang from that 0:20:02.400 --> 0:20:03.680 cable without snapping. 0:20:04.480 --> 0:20:07.359 Yeah, and it just works as a like a Roden reel, 0:20:07.359 --> 0:20:10.199 like when you're fishing. You just wind it in to 0:20:10.280 --> 0:20:12.520 raise it and let it out to lower it. 0:20:12.680 --> 0:20:16.800 Now, that technically is found in the hoist unit, which 0:20:16.880 --> 0:20:20.119 to me is just I mean, it's the thing that 0:20:20.160 --> 0:20:24.520 makes everything move. Well, no, I guess this slewing unit 0:20:24.560 --> 0:20:27.560 makes the thing moved to Anything that has to do 0:20:27.640 --> 0:20:30.200 with the load, the hook, all of that stuff, it's 0:20:30.320 --> 0:20:31.760 found in the hoist unit. 0:20:32.880 --> 0:20:36.480 Yeah, and that works with that hook block through a 0:20:36.520 --> 0:20:41.200 series of a series of pulleys. They're not just like, hey, 0:20:41.280 --> 0:20:44.479 let's put get this gigantic pulley and a giant cable. 0:20:44.520 --> 0:20:47.560 They want it. They want that cable running through several several. 0:20:47.280 --> 0:20:50.600 Pulleys right, and so that goes up and then usually 0:20:50.720 --> 0:20:53.360 up above the top of the jib arm and then 0:20:53.400 --> 0:20:57.000 back behind to the counter jib where it sits. I 0:20:57.000 --> 0:21:00.359 think usually the hoist unit sits behind the counter waits. 0:21:00.880 --> 0:21:03.440 And it consists of a big, old, burly one hundred 0:21:03.440 --> 0:21:08.679 and eighty horsepower motor that's spinning, a giant drum that 0:21:08.720 --> 0:21:11.520 has a bunch of steel cable wound around it. So 0:21:11.560 --> 0:21:14.760 the whole thing acts like a fishing line. A rodden 0:21:14.840 --> 0:21:19.080 reel essentially, is the best analogy for it. When you 0:21:19.119 --> 0:21:21.840 want to lower something, the drum spins and the line 0:21:21.840 --> 0:21:23.880 pays out. When you want to raise it back up, 0:21:24.040 --> 0:21:26.480 the drum spins the other way and reels the line 0:21:26.520 --> 0:21:30.320 in in mister, you got a big old couple hundred 0:21:30.400 --> 0:21:33.760 ton fish on the end of your line. Their congratulations. 0:21:34.560 --> 0:21:34.840 Yeah. 0:21:34.880 --> 0:21:37.720 And that cable is I mean, you would think like 0:21:37.800 --> 0:21:40.080 it's got to be like three feet around or something, 0:21:40.080 --> 0:21:43.560 but cable is really really strong. I'm not sure how 0:21:43.600 --> 0:21:46.560 big this cable is, but I've seen cables that like 0:21:46.640 --> 0:21:49.640 pull a boat out of the water, and those things 0:21:49.640 --> 0:21:53.720 are not big around at all. And I'm constantly thinking, well, 0:21:53.960 --> 0:21:57.440 I wonder when I'm going to see somebody's boat snap off. Yeah, 0:21:57.480 --> 0:22:00.000 and it just doesn't happen. Cable is just super super strong. 0:22:00.119 --> 0:22:00.919 Yeah, for sure. 0:22:01.240 --> 0:22:03.679 You know, next time we do a topic like this, 0:22:03.840 --> 0:22:05.679 we should get two five year olds to come in 0:22:05.760 --> 0:22:09.640 and explain this part because they would do it such 0:22:09.680 --> 0:22:10.439 so much more simple. 0:22:10.480 --> 0:22:10.919 Do you think so? 0:22:11.840 --> 0:22:14.520 I think so simply. Yeah, all right, two five or 0:22:14.520 --> 0:22:15.800 maybe maybe four year olds. 0:22:17.280 --> 0:22:20.080 Okay, it's got a counter jib, but that is if 0:22:20.080 --> 0:22:21.679 you look at the tower crane and you see that 0:22:21.720 --> 0:22:24.000 big long arm on the other side of the mast, 0:22:24.040 --> 0:22:27.080 you're going to see a much shorter horizontal arm out 0:22:27.080 --> 0:22:28.399 of what I guess you would call the back of 0:22:28.440 --> 0:22:31.159 the crane, and that is going to hold the counterweights 0:22:31.160 --> 0:22:34.960 because you got to counterbalance all those bobo suvsh with 0:22:35.040 --> 0:22:37.560 a lot of serious weights. And that is that those 0:22:37.560 --> 0:22:43.120 are the counterweights. The K ten thousand requires almost as 0:22:43.119 --> 0:22:47.320 many counterweights as it requires for like the maximum lift. 0:22:47.359 --> 0:22:50.520 It's four hundred and ninety one thousand and change of 0:22:50.640 --> 0:22:53.680 poundage compared to what I say, like five eighty or 0:22:53.720 --> 0:22:54.320 something like that. 0:22:55.040 --> 0:22:59.160 Yeah, it's a yeah. And there's just these huge concrete 0:22:59.160 --> 0:23:02.280 slabs that are shaped slightly like a t so the 0:23:02.320 --> 0:23:04.800 bottom parts fit into a slot, but the tops won't, 0:23:04.840 --> 0:23:08.359 so they just dangle there. It's nuts. Actually, if you 0:23:08.400 --> 0:23:11.640 think about what's going on hundreds of feet up in the. 0:23:11.600 --> 0:23:16.520 Air, well, what's nuts is when they're not lifting anything, 0:23:17.000 --> 0:23:20.159 those counterweights make the crane kind of tip backward a 0:23:20.200 --> 0:23:23.719 little bit. And if you're a crane operator and you 0:23:23.760 --> 0:23:26.560 start lifting and dropping things off, that crane does a 0:23:26.560 --> 0:23:30.000 little weeble wobble of a few feet when it's lifting 0:23:30.040 --> 0:23:32.560 and releasing things, and you just gotta you know, you 0:23:32.640 --> 0:23:34.040 gotta be used to that, I guess. 0:23:34.160 --> 0:23:36.280 Yeah, yeah, I'm sure that takes a lot of getting 0:23:36.359 --> 0:23:36.639 used to. 0:23:37.440 --> 0:23:37.800 Yeah. 0:23:37.840 --> 0:23:40.639 And then there's a tower peak, which hammerhead tower cranes 0:23:40.680 --> 0:23:43.280 don't usually have a peak, it's just flat all the 0:23:43.320 --> 0:23:46.320 way across. But sometimes they have a nice little almost 0:23:46.320 --> 0:23:49.560 like a sailboat sail masting kind of thing. Yeah, And 0:23:49.680 --> 0:23:55.159 usually that's to help support from above the jib because 0:23:55.200 --> 0:23:57.760 those things extend out pretty far and they're cann of levered, 0:23:57.880 --> 0:24:00.359 so they can use all the support they can get. 0:24:00.760 --> 0:24:05.360 There's more cableage basically right kind of supporting it from above, yes, yeah, yeah, 0:24:05.560 --> 0:24:08.480 And there's one more big, big piece of equipment as 0:24:08.480 --> 0:24:10.800 far as importance goes, if you asked me, it could 0:24:10.800 --> 0:24:12.320 be a little bigger. I have some thoughts on how 0:24:12.320 --> 0:24:15.600 to improve these things. But that is the operator cab 0:24:16.000 --> 0:24:19.560 where the person sits the crane operator sits for eight 0:24:19.600 --> 0:24:21.840 to twelve to fifteen hours a day, depending on how 0:24:21.920 --> 0:24:23.240 much they're being put to work. 0:24:23.359 --> 0:24:27.800 Yeah, and it's like roughly smallish walk in closet size 0:24:28.880 --> 0:24:33.000 in a mid market priced suburban home. 0:24:34.480 --> 0:24:37.399 So here are my two thoughts. A. These people climb 0:24:37.520 --> 0:24:38.960 up a ladder to get there. 0:24:39.800 --> 0:24:41.360 Yeah, how long does it take them? Chuck? 0:24:42.240 --> 0:24:44.399 It can take like ten minutes or more, depending on 0:24:44.480 --> 0:24:47.560 how fast they're climbing. So my first improvement is you 0:24:47.680 --> 0:24:50.200 got to get them out of like off that ladder. 0:24:50.280 --> 0:24:52.240 No one needs to be climbing up that thing at 0:24:52.240 --> 0:24:54.080 the beginning or the end of a shift. 0:24:54.240 --> 0:24:55.280 Okay, check one. 0:24:56.040 --> 0:24:58.560 There's got to be a way to get somebody up there, 0:24:59.119 --> 0:25:02.520 like a rig they attached them to and mechanically pulley 0:25:02.600 --> 0:25:05.919 themselves up or something like that. Okay, So that's my 0:25:05.960 --> 0:25:08.560 first suggestion. The other one is that thing needs a 0:25:08.560 --> 0:25:12.680 little tiny toilet. There's no bathroom. There's climate controlled, which 0:25:12.720 --> 0:25:16.560 is great, but they don't have a toilet, and Dave 0:25:16.640 --> 0:25:19.200 said he found out they pee in a bottle and 0:25:19.280 --> 0:25:22.720 poop in a plastic bag. Like get a little bitty 0:25:22.760 --> 0:25:25.040 You could make that thing a little bit bigger and 0:25:25.240 --> 0:25:28.439 put a couple of mod cons in there for these people. 0:25:28.600 --> 0:25:31.840 Yeah, no, it's true for sure. I think the thing 0:25:31.880 --> 0:25:35.080 that fascinated me the most about the cab, besides not 0:25:35.160 --> 0:25:41.080 having a bathroom, is that the windshield essentially extends all 0:25:41.119 --> 0:25:44.840 the way down below the operator's feet, so when you're 0:25:44.880 --> 0:25:48.320 sitting in the seat, your feet are dangling over the 0:25:48.400 --> 0:25:53.080 ground and hundreds and hundreds of feet below. Yeah, it's 0:25:53.119 --> 0:25:53.600 really something. 0:25:53.680 --> 0:25:54.200 List see. 0:25:54.880 --> 0:25:56.880 I'm not trying to be gross, but this is real 0:25:56.960 --> 0:26:00.000 world stuff. What if you've got you know, diarrhea or something, 0:26:00.080 --> 0:26:00.880 then then you're up there. 0:26:00.960 --> 0:26:02.359 Well, you know, I saw I saw a lot of 0:26:02.520 --> 0:26:03.400 real pro for sure. 0:26:03.440 --> 0:26:03.719 It is. 0:26:03.920 --> 0:26:07.960 I saw a lot of like blogs and articles about 0:26:08.000 --> 0:26:10.240 how as a crane operator you really need to take 0:26:10.280 --> 0:26:13.320 care of yourself, like probably more than the average construction 0:26:13.640 --> 0:26:16.520 worker would. In addition to like getting sleep so you're 0:26:16.520 --> 0:26:19.800 not like off your game on any day. You want 0:26:19.800 --> 0:26:22.879 to eat well, at least for that reason, Like you 0:26:22.880 --> 0:26:26.359 don't want to eat like a dozen wings for breakfast, lunch, 0:26:26.359 --> 0:26:29.760 and dinner. That's a bad Idelly, no chili, nothing like 0:26:29.760 --> 0:26:34.840 that chili dog's chili concarne, none of that stuff. Yeah, 0:26:34.880 --> 0:26:39.119 this is a real consideration for sure. And because it 0:26:39.200 --> 0:26:42.080 takes at least ten minutes to get to the ground, 0:26:43.600 --> 0:26:45.320 of course, you're not going to stop every time you 0:26:45.320 --> 0:26:47.600 have to go to the potty. You're gonna just go 0:26:47.720 --> 0:26:48.120 up there. 0:26:48.720 --> 0:26:50.439 Yeah, you put a little tiny body up there, it's 0:26:50.440 --> 0:26:50.920 all I'm saying. 0:26:50.920 --> 0:26:53.639 Plus, also, even if you don't, even if you're like, 0:26:53.720 --> 0:26:56.200 I want to climb back down and this is going 0:26:56.240 --> 0:26:57.879 to be awful, So I need to get out of 0:26:57.880 --> 0:27:02.119 this cap. When you're climbing down and you go to 0:27:02.160 --> 0:27:04.120 the bathroom and then you have to climb back up, 0:27:04.640 --> 0:27:07.720 that could be forty five minutes an hour worth of time. 0:27:07.800 --> 0:27:08.399 That's my point. 0:27:08.440 --> 0:27:12.560 That the entire construction site has just essentially shut down 0:27:12.600 --> 0:27:15.159 waiting on you, or whatever was coming next is just 0:27:15.200 --> 0:27:18.520 waiting on you. You have literally slowed down the entire project. 0:27:18.880 --> 0:27:21.639 That's the amount of pressure that's on the crane operator 0:27:21.800 --> 0:27:22.560 at all times. 0:27:22.600 --> 0:27:25.879 Typically, little bathroom solve that whole problem. 0:27:25.960 --> 0:27:28.960 Yeah, at the very least one of those like stadium 0:27:29.040 --> 0:27:31.200 catheters that people use at football games. 0:27:32.880 --> 0:27:35.359 Should we take a break, Yes, all right, we'll be 0:27:35.440 --> 0:28:03.720 right back with more on tower cranes. 0:28:05.040 --> 0:28:07.680 Okay, Chuck, So now we're at probably the coolest part. 0:28:07.720 --> 0:28:11.440 You thought everything was cool thus far, just wait for this, 0:28:12.000 --> 0:28:15.879 because you mentioned the Favel Brothers out of Australia and 0:28:16.320 --> 0:28:19.320 they invented that kangaroo crane, which from what I can tell, 0:28:19.359 --> 0:28:22.120 no one calls it that anymore. They probably did at first. 0:28:22.119 --> 0:28:25.240 Now they call them climbing cranes. There's actually two ways 0:28:25.280 --> 0:28:30.320 they figured out to make cranes climb to essentially build themselves. 0:28:30.640 --> 0:28:34.000 That's what they do because there's only so much of 0:28:34.040 --> 0:28:38.959 the mast that you can build using smaller cranes. Eventually, 0:28:39.200 --> 0:28:41.880 the crane's going to get too tall for the cranes 0:28:41.920 --> 0:28:45.360 that are helping build it to lift, and it needs 0:28:45.400 --> 0:28:47.280 to start taking over. It needs to stand on its 0:28:47.320 --> 0:28:50.880 own two feet and take charge of its own life. 0:28:51.080 --> 0:28:52.520 Yeah, or really four legs. 0:28:52.600 --> 0:28:52.880 Sure. 0:28:54.600 --> 0:28:57.560 The two methods are top climbing and bottom climbing. So 0:28:57.720 --> 0:29:00.280 at the beginning of each job, or when you're going 0:29:00.280 --> 0:29:01.800 to get a job, I guess you have to determine 0:29:01.840 --> 0:29:05.320 if you're a top or a bottom, and for top climbing, 0:29:06.560 --> 0:29:08.920 it really helps. I got to say to look at 0:29:08.960 --> 0:29:12.880 a video like Dave sent us these video demos. We're 0:29:12.920 --> 0:29:15.600 going to do our best to describe this stuff. If 0:29:15.600 --> 0:29:17.240 you happen to be at home or a safe place 0:29:17.280 --> 0:29:20.000 when you're not driving your car, you know, give yourself 0:29:20.040 --> 0:29:21.120 thirty seconds and check it out. 0:29:21.280 --> 0:29:24.160 I found a good one for top climbing search Stafford 0:29:24.280 --> 0:29:30.479 Soima soo Ima, okay. And then for bottom climbing, Hans 0:29:30.520 --> 0:29:35.120 Leber's company has a great video on it too. 0:29:35.240 --> 0:29:35.920 I love these guys. 0:29:35.960 --> 0:29:37.920 Hopefully this is going to blow up Andy and be like, man, 0:29:37.920 --> 0:29:39.280 where are we getting all these views from. 0:29:39.320 --> 0:29:41.760 We've gotten one hundred views in the last six months. 0:29:41.800 --> 0:29:45.400 Now, yeah, I hope that doesn't mean like we should 0:29:45.480 --> 0:29:48.959 invest in buying more cranes because of all the interest. 0:29:49.040 --> 0:29:51.520 Hey, that's on them if they miousread the market that badly. 0:29:52.640 --> 0:29:56.480 All right, So the climbing frame is what is necessary 0:29:56.480 --> 0:30:00.600 to build a top climbing crane. The climb frame is 0:30:00.640 --> 0:30:03.440 three sided. It's got you know, three sides and then 0:30:03.440 --> 0:30:06.000 one open side, and it's built around the base of 0:30:06.040 --> 0:30:08.320 the mast kind of like Dave describe it as like 0:30:08.360 --> 0:30:11.160 a cage that's a little wider than the mass, so 0:30:11.200 --> 0:30:13.360 it can slide up and down on the outside, which 0:30:13.400 --> 0:30:14.240 makes a lot of sense. 0:30:14.320 --> 0:30:17.400 You know those construction elevators that they have on construction 0:30:17.520 --> 0:30:20.120 sites that are essentially that that people like used to 0:30:20.160 --> 0:30:23.160 get up. Imagine that. But there's no place for you 0:30:23.280 --> 0:30:26.920 to stand because it's the mast of the crane is 0:30:26.960 --> 0:30:30.400 going through it. Yeah, that's a much more convoluted way 0:30:30.440 --> 0:30:31.000 to think of it. 0:30:31.040 --> 0:30:33.080 I like to think, yeah, exactly. 0:30:34.040 --> 0:30:36.160 The cool thing about this climbing frame is it is 0:30:36.240 --> 0:30:39.240 equipped with these hydraulic jacks. So what it does is 0:30:40.080 --> 0:30:42.680 it they have all these you know, trusses in a 0:30:43.080 --> 0:30:46.280 very straight line, because while you're doing this, that jib 0:30:46.400 --> 0:30:50.960 arm has to stay completely straight and still or I'm sorry, yeah, 0:30:50.960 --> 0:30:53.160 that long arm. You don't want it moving around, and 0:30:53.200 --> 0:30:54.880 you'll see why in a second. So they line them 0:30:54.880 --> 0:30:58.680 all up in a row, and that climbing frame goes 0:30:58.880 --> 0:31:03.280 down and it picks up one of these trusses, or 0:31:03.320 --> 0:31:05.160 you know, it doesn't pick it up. I imagine it 0:31:05.160 --> 0:31:08.880 gets loaded in or whatever, and then these hydraulic jacks 0:31:08.960 --> 0:31:12.120 push it up, you know, kind of you know, a 0:31:12.160 --> 0:31:15.480 few feet at a time. Basically it's you know, decompressing 0:31:15.560 --> 0:31:18.800 and compressing and inching this thing up and up and 0:31:18.880 --> 0:31:21.360 up until it gets to the top of where you 0:31:21.440 --> 0:31:25.560 need a new section, and then they slide it in 0:31:25.760 --> 0:31:28.600 and attach it. But the frightening part is all of 0:31:28.600 --> 0:31:32.480 this is done like this thing has to be unbolted 0:31:33.000 --> 0:31:35.560 another to bolt in order to bolt the new section on. 0:31:35.800 --> 0:31:38.960 So there's a very tenuous time where everything has just 0:31:39.040 --> 0:31:41.520 got to be perfectly imbalanced while they unbolt this thing. 0:31:41.600 --> 0:31:44.360 Yeah, and what's scary is at that most tenuous time, 0:31:44.760 --> 0:31:47.880 that's when the crane is lifting the next mass section 0:31:48.200 --> 0:31:50.920 up so that it can be slid into that open 0:31:52.000 --> 0:31:54.240 fourth wall of the climbing frame. 0:31:54.960 --> 0:31:58.360 It's yeah, really, and the drivers, the operators even out 0:31:58.400 --> 0:32:00.400 because they don't even want anyone in the cab moving 0:32:00.440 --> 0:32:02.200 around like you know, with diarrhea. 0:32:03.120 --> 0:32:06.520 Right. But no, I saw in one video that the 0:32:06.520 --> 0:32:09.080 the crane had to have the operator in there to 0:32:09.680 --> 0:32:11.880 lift up the east each mass section. 0:32:12.720 --> 0:32:14.320 Well, I saw that a lot of times they're not 0:32:14.360 --> 0:32:16.959 in there. So some may be self operational and some 0:32:17.040 --> 0:32:20.760 may require just a very steady h you know, someone 0:32:20.840 --> 0:32:22.080 on some emodium maintaince. 0:32:22.080 --> 0:32:23.960 I mean, yeah, no, that makes sense that there wouldn't 0:32:23.960 --> 0:32:26.120 be any in there because it's it's very dangerous because 0:32:26.160 --> 0:32:29.360 the only thing connecting the entire top part of the crane, 0:32:29.400 --> 0:32:31.840 which is already built to the bottom of the mast, 0:32:32.000 --> 0:32:34.520 is that climbing frame at those points when they're starting 0:32:34.600 --> 0:32:37.239 to move a new section in. But when you do this, 0:32:37.800 --> 0:32:39.880 you can do this up till what was it about, 0:32:39.960 --> 0:32:44.800 you know, four hundred feet where the whole thing tops out, Like, yeah, 0:32:44.960 --> 0:32:47.920 that's I can't imagine seeing something like that, let alone 0:32:47.960 --> 0:32:49.680 working on it, because I don't know if you said 0:32:50.280 --> 0:32:55.640 on that climbing frame, there's some dudes being gender neutral 0:32:55.680 --> 0:32:59.239 here riding that thing, like you're a dude if you 0:32:59.280 --> 0:33:03.880 are still making giant pins into the mass frame sections 0:33:04.280 --> 0:33:09.400 to erect a giant, a giant tower crane. That's just 0:33:09.640 --> 0:33:11.680 the kind of personality it takes, I think. 0:33:12.520 --> 0:33:17.160 Yeah, And I had always assumed these were telescoping like 0:33:17.240 --> 0:33:19.400 a fire truck ladder. 0:33:19.440 --> 0:33:19.720 Nope. 0:33:20.280 --> 0:33:22.240 I thought it was just some huge unit on the 0:33:22.240 --> 0:33:24.640 ground that could just telescope up to four hundred feet. 0:33:25.120 --> 0:33:27.200 The fact that this is how it's done is remarkable. 0:33:27.280 --> 0:33:29.840 Yeah, So you can almost imagine the climbing frame is 0:33:29.880 --> 0:33:34.080 like a giant speculum that separates the top of the 0:33:35.280 --> 0:33:38.160 tower crane from the bottom, and you insert another section 0:33:38.200 --> 0:33:39.240 and then it does it again. 0:33:40.520 --> 0:33:43.840 All right, you explained the bottom because I got it 0:33:43.880 --> 0:33:46.400 and I saw the video, but I had a couple 0:33:46.400 --> 0:33:47.000 of questions. 0:33:47.320 --> 0:33:52.520 Oh okay, all right, So bottom climbing you do the 0:33:52.640 --> 0:33:55.120 opposite with the top climbing. You're adding the new sections 0:33:55.120 --> 0:33:58.760 at the top. At the bottom. You build the crane 0:33:58.840 --> 0:34:02.760 like any other tower cran to start up to two hundred, 0:34:02.800 --> 0:34:05.440 three hundred feet whatever, and you use it like normal. 0:34:05.760 --> 0:34:08.839 But the difference is with the bottom climbing crane, you 0:34:08.920 --> 0:34:11.960 build the building around the crane. 0:34:12.200 --> 0:34:14.520 With the top climbing inside the building exactly. 0:34:14.560 --> 0:34:16.960 Top climbing is outside of the building. It stays outside 0:34:16.960 --> 0:34:19.120 of the building the whole time. Bottom climbing, you build 0:34:19.400 --> 0:34:22.880 the building around the crane, and eventually, as the building 0:34:22.920 --> 0:34:25.760 gets tall enough, it starts to serve as the support 0:34:25.840 --> 0:34:30.200 structure for the crane, because eventually you have to decouple 0:34:30.280 --> 0:34:33.960 the crane from the foundation that was poured for it, 0:34:34.000 --> 0:34:39.279 like any other crane, and there's a jack that climbs up. 0:34:39.320 --> 0:34:42.440 These climbing rails essentially two ladders that are on the 0:34:42.480 --> 0:34:47.160 outside of the crane. Itself, and it pushes the crane 0:34:47.280 --> 0:34:51.280 up little by little, usually about three stories at a time. 0:34:51.920 --> 0:34:55.560 And so now the crane has lost its bottom section 0:34:55.800 --> 0:34:58.000 because the bottom section is now three stories above it, 0:34:58.640 --> 0:35:01.279 and the top three stories is now unsecured to the 0:35:01.280 --> 0:35:03.799 next top three stories of the building. So they then 0:35:03.960 --> 0:35:06.680 secure that to the building with callers, and then they 0:35:06.719 --> 0:35:11.480 disassemble everything below it and build the building out around 0:35:11.640 --> 0:35:14.000 the shaft where the crane used to be. They fill 0:35:14.000 --> 0:35:16.560 it in as the crane just moves higher and higher 0:35:16.600 --> 0:35:21.680 and higher. And with this method you can build as 0:35:21.719 --> 0:35:24.920 tall a building as physics will allow, because the crane 0:35:24.960 --> 0:35:28.520 grows upward with the building as the building grows upward. 0:35:28.719 --> 0:35:30.880 Yeah, it's amazing, and I guess i'd answer my question. 0:35:31.000 --> 0:35:34.040 My question was sort of if you need that kind 0:35:34.040 --> 0:35:39.120 of foundation for a freestanding outside, like is being attached 0:35:39.160 --> 0:35:40.759 to the building enough And I guess it is. 0:35:42.080 --> 0:35:45.000 Yeah, yeah, yes, for sure. And I think it's like 0:35:45.080 --> 0:35:46.880 special parts of the building. It's not like they attach 0:35:46.920 --> 0:35:50.000 it to like studs and drywall or something like that. 0:35:50.200 --> 0:35:53.399 Like I think the building is designed to accommodate this pain. 0:35:54.040 --> 0:35:57.600 Also, yeah, I think that more than answer my question. 0:35:58.080 --> 0:36:00.000 Yes, but those are the two ways that you can 0:36:00.120 --> 0:36:03.319 raise a crane, and they're both spectacular in their in 0:36:03.360 --> 0:36:04.560 their ingeniousness. 0:36:04.800 --> 0:36:08.080 All right, so that's how they're built. Bottom up or 0:36:08.160 --> 0:36:09.919 top down, not top down. 0:36:10.200 --> 0:36:11.000 How do we say. 0:36:12.920 --> 0:36:15.560 Either one? I think bottom climbing or top climbing. 0:36:15.640 --> 0:36:16.640 You mean, I guess. 0:36:16.719 --> 0:36:19.400 So those are the giant tower cranes. We mentioned that 0:36:19.440 --> 0:36:24.400 luffing crane at the beginning. This is a This is 0:36:24.440 --> 0:36:25.880 when you don't have a ton of space, and I 0:36:25.880 --> 0:36:28.520 saw a video where it showed, especially when there's multiple 0:36:28.560 --> 0:36:31.160 cranes on a job swinging around. Yeah, you got to 0:36:31.160 --> 0:36:33.439 think about the fact that, like if you're swinging something 0:36:33.440 --> 0:36:35.800 three hundred feet, everything has got to be out of 0:36:35.840 --> 0:36:38.440 the way of that swing as well. So when you 0:36:38.440 --> 0:36:41.520 have tighter spaces, you might want a luffing jib arm. 0:36:41.640 --> 0:36:45.440 And that is when the horizontal arm actually raises and lowers. 0:36:45.880 --> 0:36:50.000 So instead of having that that block and hook going 0:36:50.120 --> 0:36:53.399 you know, up and down on with a pulley, it's 0:36:53.520 --> 0:36:55.880 just sort of there and the action of lifting that 0:36:56.040 --> 0:36:58.839 arm up and down is what brings the the thing 0:36:58.920 --> 0:37:00.720 on the hook closer further away. 0:37:01.400 --> 0:37:03.640 Yeah, if you've ever seen like one of those wrecking 0:37:03.719 --> 0:37:07.520 balls that they use that's attached to a luffing crane. 0:37:07.520 --> 0:37:11.600 Typically, sure, what about self erectors? 0:37:12.480 --> 0:37:15.080 These are pretty neat. They usually show up on the 0:37:15.120 --> 0:37:17.680 back of like a truck, and the truck puts down 0:37:17.719 --> 0:37:21.040 some feet for stabilization and probably lifts the truck off 0:37:21.080 --> 0:37:25.719 of the ground and a crane just kind of pops out. 0:37:25.760 --> 0:37:29.239 It folds out. Telescope, it's that telescoping effect that you 0:37:29.320 --> 0:37:34.360 were You thought the original tower cranes were doing this essentially. 0:37:33.920 --> 0:37:34.960 Does this is a folding. 0:37:35.200 --> 0:37:39.680 It's not telescoping, okay, but it's it's folded up in itself. 0:37:39.719 --> 0:37:43.000 It's all there and it unfurls. I guess is what 0:37:43.040 --> 0:37:43.879 I'm after here. 0:37:43.960 --> 0:37:45.319 Yeah, I just want to make sure you knew what 0:37:45.360 --> 0:37:46.480 telescoping meant. 0:37:46.719 --> 0:37:50.319 I learned what telescoping means and slewing thanks to you 0:37:50.440 --> 0:37:51.600 in this one episode. 0:37:51.719 --> 0:37:52.120 That's right. 0:37:52.160 --> 0:37:54.840 These thing's just unfold into the sky and it's a 0:37:54.880 --> 0:37:57.080 really also some really cool videos you can watch. 0:37:57.560 --> 0:37:59.480 Yeah, should we take another break? 0:38:00.480 --> 0:38:02.720 Well, before we do, I want to take another crackhet 0:38:02.719 --> 0:38:04.080 explaining bottom climbing. 0:38:05.000 --> 0:38:33.600 We'll be right back, all right. 0:38:33.640 --> 0:38:36.799 We talked a little bit about the operator, but there 0:38:36.840 --> 0:38:39.520 are all kinds of a team of people that work 0:38:39.600 --> 0:38:42.800 with these cranes. Obviously, in the US there's a certifying 0:38:42.840 --> 0:38:47.680 body called the n c c c O National Commission 0:38:47.719 --> 0:38:52.239 for the Certification of Crane Operators, and so that's that's 0:38:52.280 --> 0:38:56.000 the big job. That's the most experienced person. They have 0:38:56.120 --> 0:38:58.400 worked on all these other jobs that we're about to 0:38:58.440 --> 0:39:00.360 talk about for years and years before they get to 0:39:00.360 --> 0:39:04.319 be the crane operator. And I was curious what kind 0:39:04.320 --> 0:39:06.399 of money they made. And it's all over the map 0:39:06.440 --> 0:39:08.160 if you look on the internet, because it seems like 0:39:08.480 --> 0:39:10.239 it's just kind of hard to find that stuff out. 0:39:10.280 --> 0:39:14.920 But I did see that in the southeastern United States, 0:39:14.960 --> 0:39:17.520 like ninety thousand dollars puts you at about the seventy 0:39:17.520 --> 0:39:22.120 fifth percentile. I also saw on Reddit, like my friend 0:39:22.160 --> 0:39:24.480 os this in New York kind of thing. Yeah, but 0:39:24.680 --> 0:39:27.960 apparently this people on Reddit are saying, in New York City, 0:39:28.360 --> 0:39:30.640 you can make you know, two to three to four 0:39:30.719 --> 0:39:33.399 hundred thousand dollars as like one of the top two 0:39:33.480 --> 0:39:35.760 or three earners in New York, which, as I imagine, 0:39:36.239 --> 0:39:37.600 the top of the game in the world. 0:39:38.200 --> 0:39:41.200 Yeah. No, I totally believe that, like you're so in 0:39:41.280 --> 0:39:45.160 demand that you have nothing to do with raising the 0:39:45.200 --> 0:39:48.920 crane or taking it down. You're there as long as 0:39:48.960 --> 0:39:52.160 they need a person to operate the crane for the job. 0:39:52.600 --> 0:39:55.320 And then once that's done, they move you over. Somebody 0:39:55.360 --> 0:39:58.719 hires you on another job site, like you are untouchable 0:39:58.880 --> 0:40:01.560 as far as like the the job site's concerned. 0:40:01.760 --> 0:40:04.000 Yeah, And in the interview, their first question is how 0:40:04.040 --> 0:40:05.760 much fiber do you include in your diet? 0:40:08.400 --> 0:40:10.960 So then there's a lift director. That's somebody who basically 0:40:11.000 --> 0:40:14.440 manages the lifting that goes on. If it's a heavy 0:40:14.480 --> 0:40:17.560 load or any kind of unique or dangerous load, they're 0:40:17.600 --> 0:40:20.319 supposed to formulate a plan for it of how it's 0:40:20.360 --> 0:40:22.799 going to be lifted, where it's going to go, what 0:40:23.000 --> 0:40:25.920 direction it's going to follow, all that stuff, and they 0:40:26.040 --> 0:40:29.120 essentially are just kind of running the show on the ground. 0:40:29.480 --> 0:40:31.560 I believe they're usually the one. 0:40:31.680 --> 0:40:31.719 No. 0:40:32.080 --> 0:40:33.480 I was going to say they're the one that the 0:40:33.600 --> 0:40:36.480 crane operator's probably in touch with, but I believe that's 0:40:36.800 --> 0:40:38.360 the signal person instead. 0:40:39.120 --> 0:40:42.080 That's right, And the signal person is doing just what 0:40:42.080 --> 0:40:46.040 you think. They're on the radio and constant communication, but 0:40:46.080 --> 0:40:50.200 they're also doing hand signals, not just on that CB 0:40:50.400 --> 0:40:53.719 radio or whatever. They use walkie talkies and there are 0:40:53.800 --> 0:40:57.440 times when that crane operator is working blind and they 0:40:57.440 --> 0:40:59.560 don't have sight of what they're doing, and that's when 0:40:59.560 --> 0:41:03.239 that signal person and really everyone working together is so key. 0:41:04.040 --> 0:41:06.960 Yeah, that's the person who communicates to the crane operator 0:41:06.960 --> 0:41:08.640 that the people on the ground want them to toot 0:41:08.640 --> 0:41:11.040 their horn, right, and they use that same pull down 0:41:11.160 --> 0:41:14.000 motion that you use for big rig truckers. 0:41:13.880 --> 0:41:15.719 Right, or it gets the message that I have to 0:41:15.760 --> 0:41:18.200 go potty, so let's shut everything down for forty minutes. 0:41:18.440 --> 0:41:21.400 That's the international squeeze your knees together and hold your 0:41:21.400 --> 0:41:22.760 crotch signal. 0:41:23.080 --> 0:41:27.319 Uh, did you go over their rigor no? Okay, Now 0:41:27.320 --> 0:41:31.160 that is the person who was preparing the load attaching 0:41:31.160 --> 0:41:33.960 it to the crane hook. Obviously that load on the ground, 0:41:34.520 --> 0:41:36.520 it's not just like, you know, just attach it there 0:41:36.520 --> 0:41:39.239 and I'm sure it's fine. Like everything has to be 0:41:39.320 --> 0:41:42.520 so buttoned up, like nothing can be loose or falling 0:41:42.560 --> 0:41:44.560 off of that thing, Like it's got to be a 0:41:44.840 --> 0:41:46.720 very nicely wrapped Christmas present. 0:41:47.360 --> 0:41:47.760 Yes. 0:41:48.320 --> 0:41:52.600 So, depending on where you're working, there are sixteen states 0:41:52.600 --> 0:41:55.440 and seven cities that require you to have a license. 0:41:55.719 --> 0:41:59.479 That's it. Everywhere else there's state or the city does 0:41:59.520 --> 0:42:03.799 not require you to have any sort of formal training whatsoever. 0:42:04.840 --> 0:42:09.960 The thing is, the NCCCO offers certification too, which is 0:42:10.040 --> 0:42:12.680 usually voluntary. But I get the impression that if you 0:42:12.760 --> 0:42:15.799 want to be one of those higher end crane operators, 0:42:16.040 --> 0:42:19.120 you would be certified for that job multiple times over, 0:42:20.400 --> 0:42:24.920 and not only just to kind of enhance your desirability 0:42:24.960 --> 0:42:28.960 as an employee, but also wow, I put that as 0:42:29.000 --> 0:42:32.840 like the HR person and to all HR people, but 0:42:32.960 --> 0:42:35.520 also like some job sites might require you to have 0:42:35.560 --> 0:42:38.520 at least a certification, if not a license, and it 0:42:38.640 --> 0:42:40.400 might not even be the job site. It might be 0:42:40.440 --> 0:42:42.839 their insurres, Like nobody's gonna be like, hey, you come 0:42:42.840 --> 0:42:45.600 over here and operate this crane, Like you're gonna have 0:42:45.640 --> 0:42:47.840 to have tons of experience and probably some sort of 0:42:47.840 --> 0:42:51.160 paperwork to back that experience up. But I find it 0:42:51.200 --> 0:42:55.040 shocking and alarming that plenty of states don't require the 0:42:55.040 --> 0:42:58.680 person who's four hundred feet in the air lifting two 0:42:58.719 --> 0:43:02.640 hundred tons to have some sort of formal training. 0:43:02.320 --> 0:43:05.479 For that totally it is. It shocked me as well. 0:43:05.920 --> 0:43:10.520 Yeah, these things are expensive to rent, you're you know, 0:43:10.640 --> 0:43:13.399 obviously it's a cost a lot of money to build one, 0:43:13.480 --> 0:43:16.120 but they get that money back. Because Dave just looked 0:43:16.160 --> 0:43:19.919 up just sort of an average rental a flat top 0:43:20.040 --> 0:43:25.920 tower crane within just an eighty eight thousand pound capacity lift, 0:43:25.960 --> 0:43:28.040 which is I don't know how many babos that is, 0:43:28.040 --> 0:43:29.800 but it's nowhere close to what I said earlier. 0:43:29.960 --> 0:43:31.800 It's forty four tons. 0:43:31.760 --> 0:43:34.440 A two hundred and sixty two foot jib arm, so 0:43:35.560 --> 0:43:37.839 about you know, a little more than half of sort 0:43:37.880 --> 0:43:41.480 of the maximum that that sucker is thirty five thousand 0:43:41.520 --> 0:43:45.600 dollars a month. Yeah, the cheapest is thirty six hundred, 0:43:45.600 --> 0:43:47.520 and that's for the one you bring on the truck. 0:43:48.200 --> 0:43:51.560 Yeah, and a lot of those rental prices will include 0:43:51.920 --> 0:43:54.000 putting the thing together over the course of four or 0:43:54.040 --> 0:43:57.439 five days and taking it down too, and maybe even 0:43:57.520 --> 0:44:02.160 a skilled crane operator depending, So you can imagine that 0:44:02.200 --> 0:44:06.759 these things are actually fairly dangerous. Safety is far and 0:44:06.800 --> 0:44:09.440 away like the number one concern for any crane operator. 0:44:09.440 --> 0:44:12.759 Every single interview I've read with a crane operator, they 0:44:12.840 --> 0:44:15.640 all were like, it's all about safety essentially, Like, yes, 0:44:15.680 --> 0:44:18.319 you're really important on the job site, but if it's 0:44:18.360 --> 0:44:20.600 not safe, you don't do it, Like you just don't. 0:44:21.719 --> 0:44:24.200 I mean, you're lifting heavy loads, you're swinging them through 0:44:24.200 --> 0:44:26.640 the air, you can drop them. There's all sorts of 0:44:26.680 --> 0:44:30.520 stuff that can happen. And yes, wind is a big one, 0:44:30.560 --> 0:44:34.120 as we'll see, but they've kind of figured that out. 0:44:34.239 --> 0:44:38.520 But just the fact that there's that you have these 0:44:38.560 --> 0:44:41.600 huge loads high up in the air. When they get 0:44:41.719 --> 0:44:44.360 dropped or when something goes wrong, people can die, and 0:44:44.400 --> 0:44:48.160 I mean it does happen. I remember this past July 0:44:48.920 --> 0:44:52.400 in Manhattan, the entire jib arm of a crane fell down. 0:44:52.840 --> 0:44:55.839 I think, I don't remember how many stories, but it 0:44:55.880 --> 0:44:58.799 was significant. I actually I think it did kill one 0:44:58.840 --> 0:45:01.520 person who was in a nearby apartment building, Like some 0:45:01.600 --> 0:45:03.879 of the debris like crashed through their window and killed them, 0:45:03.920 --> 0:45:06.520 I think. But they were the only person who died 0:45:06.560 --> 0:45:09.040 out of this, A sixteen ton load in a jib 0:45:09.120 --> 0:45:11.760 arm crashing to the ground in Manhattan in the middle 0:45:11.800 --> 0:45:12.279 of a day. 0:45:13.040 --> 0:45:14.319 That one caught on fire, didn't it. 0:45:14.640 --> 0:45:17.879 Yeah, there was a fire in the hoist unit for 0:45:17.880 --> 0:45:20.120 some reason. I couldn't figure out what caused it. 0:45:21.160 --> 0:45:25.440 That's a lot that no one was killed. I mean that. 0:45:25.520 --> 0:45:27.759 I remember when that happened too, and I was just like, 0:45:27.800 --> 0:45:29.680 how can that happen? In New York City and not 0:45:29.800 --> 0:45:32.000 kill like twelve people below at least, you know. 0:45:32.160 --> 0:45:36.040 Yeah, apparently another real danger chuck is hitting power lines. 0:45:36.840 --> 0:45:37.800 Yeah, because people. 0:45:37.600 --> 0:45:40.799 Will walk like they'll walk like a load you know, 0:45:40.880 --> 0:45:43.240 along to stabilize it, say, like a bunch of pipes, 0:45:43.840 --> 0:45:48.320 and that pipe is connected via metal cable to the crane. 0:45:48.760 --> 0:45:51.040 And if the crane came in contact with a thirteen 0:45:51.080 --> 0:45:54.560 thousand volt power line, whoever's got their hand on that 0:45:54.800 --> 0:45:58.080 load of pipes is it will be electrocuted. And it 0:45:58.120 --> 0:46:02.920 happens like a lot, Like not a lot, It happens frequently, 0:46:03.000 --> 0:46:04.040 to an alarming degree. 0:46:04.080 --> 0:46:07.399 How about that, Well, they found some stats and what 0:46:07.480 --> 0:46:10.319 he got was from twenty eleven to twenty seventeen, over 0:46:10.320 --> 0:46:13.880 that seven years, they averaged forty two crane related deaths 0:46:13.880 --> 0:46:18.440 per year. That's not insignificant, you know, forty two per year. 0:46:18.640 --> 0:46:23.000 And I think half of those were things falling on people. 0:46:24.120 --> 0:46:26.440 Not all of them were tower cranes. It's kind of 0:46:26.480 --> 0:46:31.680 all cranes basically lumped together. But yeah, sometimes they're taking 0:46:31.680 --> 0:46:34.640 it apart and it falls apart on them. It seems 0:46:34.680 --> 0:46:37.359 like there's a lot of crushing death with it, which 0:46:37.400 --> 0:46:39.880 is just you know, unfathomable. 0:46:40.320 --> 0:46:43.239 Yeah, people have gotten caught in the climbing cage, caught 0:46:43.280 --> 0:46:46.400 between that and the frame of the mast. There was 0:46:46.440 --> 0:46:50.200 one guy who was taking a part a crane and 0:46:50.880 --> 0:46:54.200 he was on the forty fifth story and that platform 0:46:54.239 --> 0:46:57.080 that he was on outside the crane removing pins didn't 0:46:57.080 --> 0:47:01.759 have a railing. It didn't have a railing, and it 0:47:01.880 --> 0:47:05.840 shifted and he fell forty five stories because it didn't 0:47:05.920 --> 0:47:10.920 have a railing. Wow. I just couldn't believe it. When 0:47:10.920 --> 0:47:13.080 I read like the Oshra report, I'm just like, oh 0:47:13.120 --> 0:47:18.960 my god, that's insanely nuts. But yeah, so safety is 0:47:19.080 --> 0:47:22.799 extraordinarily important. You can see and I said, I tease something, 0:47:22.880 --> 0:47:24.920 Chuck that I think you should take us home with that. 0:47:24.960 --> 0:47:26.800 They figured out what to do in high winds. 0:47:27.200 --> 0:47:30.000 Yeah, you know what you do in high winds is 0:47:30.080 --> 0:47:33.600 you unbolt that thing and let it spin with the wind. 0:47:34.239 --> 0:47:37.080 Obviously you've got the reel all the way reeled in 0:47:37.120 --> 0:47:40.120 and it's not like swinging anything around. But when if 0:47:40.160 --> 0:47:45.319 you see and heavy winds a horizontal arm moving, that's 0:47:45.360 --> 0:47:47.920 what it's supposed to do. Because they have learned that 0:47:48.000 --> 0:47:50.800 if that thing is bolted down, that puts the entire 0:47:50.840 --> 0:47:53.399 thing at risk, whereas if you just let it move 0:47:53.640 --> 0:47:55.920 with the wind and obviously out of the way of 0:47:55.960 --> 0:47:57.480 hitting anything, then that's the way to go. 0:47:59.200 --> 0:48:02.600 Yeah, and I read an interview with a crane operator 0:48:02.640 --> 0:48:04.960 who had to ride out a storm once because it 0:48:05.000 --> 0:48:07.439 was too dangerous to make the ten minute climb down, 0:48:07.719 --> 0:48:09.080 so you had to sit there in the cab and 0:48:09.120 --> 0:48:11.600 just get pushed around by the wind, letting it a 0:48:11.640 --> 0:48:12.239 weather vane. 0:48:13.120 --> 0:48:14.879 And I'm not even going to make a poop joke. There. 0:48:16.480 --> 0:48:17.279 You got anything else? 0:48:17.960 --> 0:48:18.840 I got nothing else. 0:48:19.360 --> 0:48:22.360 This was robust. Thanks for doing it with me. This 0:48:22.480 --> 0:48:25.480 was fun. Thanks for being the top or the bottom 0:48:25.560 --> 0:48:29.799 to this crane episode, Chuck, Hey, anytime if you want 0:48:29.800 --> 0:48:32.439 to know more about cranes. Apparently there's a Housetiff Works 0:48:32.520 --> 0:48:34.719 article on it by Marshall Brain. And there's plenty of 0:48:34.760 --> 0:48:39.560 other interesting stuff too, including really mesmerizing CGI videos of 0:48:39.640 --> 0:48:43.960 cranes building themselves magically. And since I said that it's 0:48:44.040 --> 0:48:45.280 time for listener mail. 0:48:48.280 --> 0:48:49.960 All right, I'm going to call this. 0:48:52.360 --> 0:48:54.160 Well, I'm going to call it sits scuba related. This 0:48:54.200 --> 0:48:58.520 is kind of very poignant email. Hey, guys, been listening 0:48:58.560 --> 0:49:00.440 for a long time. I learned to scuba with my 0:49:00.520 --> 0:49:03.320 brother and dad when I was fourteen, back in nineteen 0:49:03.360 --> 0:49:06.080 eighty nine, the moment we took our first breaths underwater, 0:49:06.120 --> 0:49:09.920 we were hooked along. Aside from a long hiatus, I've 0:49:09.920 --> 0:49:12.759 been an avid diver ever since. Many of my best 0:49:12.760 --> 0:49:17.120 memories were created on dive trips with my brother and dad. Tragically, 0:49:17.160 --> 0:49:20.200 we lost my brother to suicide last year after a 0:49:20.239 --> 0:49:24.040 decade's long battle with mental illness, and I just wanted 0:49:24.080 --> 0:49:25.839 to take a moment to commend you and your team 0:49:25.880 --> 0:49:28.760 for your sympathy and in dexterity with which you handle 0:49:29.160 --> 0:49:32.239 mental illness on your show. Know that the links in 0:49:32.280 --> 0:49:34.680 which you go to assure you were using the most 0:49:34.719 --> 0:49:38.200 compassionate language to discuss mental illness and other touchy subjects 0:49:38.480 --> 0:49:41.719 does not go unnoticed and is greatly appreciated. But to 0:49:41.719 --> 0:49:43.840 be clear, so are the moments you choose to essue 0:49:44.239 --> 0:49:48.400 the acceptable standards for a moment to make a joke, Chuck, 0:49:48.719 --> 0:49:51.440 this is for you by all means. Please get scuba 0:49:51.480 --> 0:49:54.640 certified with your daughter and your wife if she's interested. 0:49:54.719 --> 0:49:57.480 I have so many crystal clear, fantastic memories with my 0:49:57.560 --> 0:49:59.920 dad and my brother diving. You can't make a child's 0:50:00.200 --> 0:50:02.880 any more awesome than by taking them to visit another planet. 0:50:03.360 --> 0:50:07.000 Lifetime memories are made by the moment. It's a magical pursuit. 0:50:07.280 --> 0:50:07.640 Do it. 0:50:08.360 --> 0:50:10.319 My brother used to say diving is easy to do 0:50:10.360 --> 0:50:11.360 and difficult to master. 0:50:11.600 --> 0:50:12.080 So true. 0:50:12.600 --> 0:50:15.479 He was my friend, my die buddy, and my hero 0:50:16.320 --> 0:50:19.279 and I miss him like crazy. He sure would have 0:50:19.320 --> 0:50:23.120 loved the Scoob episode. And that is from Dan Man. 0:50:23.480 --> 0:50:25.920 Dan, thank you for writing in about that. That was 0:50:25.960 --> 0:50:28.840 really amazing stuff. I'm sorry about your brother. 0:50:29.480 --> 0:50:29.760 Same. 0:50:31.280 --> 0:50:33.160 If you want to be like Dan and write us 0:50:33.239 --> 0:50:38.400 just a masterful, amazing, heartfelt email, we'd love those things. 0:50:38.960 --> 0:50:42.680 You can address it directly to us at stuff Podcasts 0:50:42.880 --> 0:50:48.160 at iHeartRadio dot com. 0:50:48.320 --> 0:50:51.200 Stuff you Should Know is a production of iHeartRadio. For 0:50:51.320 --> 0:50:55.480 more podcasts my heart Radio, visit the iHeartRadio app, Apple Podcasts, 0:50:55.600 --> 0:51:01.880 or wherever you listen to your favorite shows.