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flosofl posted:As another poster said, those are solid wood 4 x 4 beams. The "loading door" is in fact just a huge rear end hole that they cut in the wall
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Jun 7, 2015 05:47
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Cichlidae posted:It's pure concrete with no rebar. It would've shattered with the first freeze/thaw cycle anyway. No waterproofing, no attachment points... it was pretty much destined to become rubble at a moment's notice. You have to install it properly and use it in the right situations, but unreinforced concrete pipe is a common and standardized product. (I mean, that didn't look like a standard precast pipe, but there are all sorts of things that could legitimately be used for. Anything that generally stays in compression and is competently installed really) T.C. fucked around with this message at 08:40 on Jun 7, 2015 |
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Jun 7, 2015 08:36
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Bloody Hedgehog posted:Even if they were palletes, wood had ridiculous compressive strength. Though slightly less in that direction, to be fair.  (a chunk of 12"x16" wooden beam loaded to failure in an engineering class I took long ago. Squish!)
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Jun 7, 2015 08:44
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ol qwerty bastard posted:Though slightly less in that direction, to be fair. Out of curiosity, how big of a load did that take?
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Jun 7, 2015 10:05
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Jun 7, 2015 10:22
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Mikl posted:Out of curiosity, how big of a load did that take? Are we not even doing Phrasing anymore?
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Jun 7, 2015 10:55
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Well it's definitely secure, i mean that wheel is unlikely to come off.
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Jun 7, 2015 10:56
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Maybe there are strong winds, and he just needed it secured while parked.
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Jun 7, 2015 12:06
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Sappo569 posted:Are we not even doing Phrasing anymore? Whatever, that’s fine, but if we’re doing something new and no one told me, THAT I’d have a problem with!
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Jun 7, 2015 16:37
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Mikl posted:Out of curiosity, how big of a load did that take? It's been so long, I couldn't even tell you the order of magnitude. I just remember it was less than this one:  (For completeness here is is failing in the direction you'd expect it to fail, though this isn't particularly spectacular) 
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Jun 7, 2015 16:47
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Helios Grime posted:I think this falls under OSHA.jpg, somebody also post it into the schadenfreude thread cause it also belongs there. Is it wrong that I want to give that dude a chainsaw?
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Jun 7, 2015 19:03
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That's boring, he'll just use it like a regular saw. Now give him one of these  and see him work up a sweat trying to compress the ground.
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Jun 7, 2015 19:28
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Wow, you don't often see an "Isadora Duncan" tie-down in real life.
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Jun 8, 2015 02:54
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I like your username pigfeet
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Jun 8, 2015 02:58
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Pigsfeet on Rye posted:Wow, you don't often see an "Isadora Duncan" tie-down in real life. drat, obscure reference is obscure, but well done, Dennis Miller 
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Jun 8, 2015 03:37
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Pigsfeet on Rye posted:Wow, you don't often see an "Isadora Duncan" tie-down in real life. Impressive.
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Jun 8, 2015 05:04
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Pigsfeet on Rye posted:Wow, you don't often see an "Isadora Duncan" tie-down in real life. Dang. 
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Jun 8, 2015 08:33
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I don't get it.
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Jun 8, 2015 08:41
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WarpedNaba posted:I don't get it. I had to look it up: http://en.wikipedia.org/wiki/Isadora_Duncan#Death quote:On the night of September 14, 1927 in Nice, France, Duncan was a passenger in an Amilcar automobile owned by Benoît Falchetto, a French-Italian mechanic. She wore a long, flowing, hand-painted silk scarf, created by the Russian-born artist Roman Chatov, a gift from her friend Mary Desti, the mother of American film director Preston Sturges. Desti, who saw Duncan off, had asked Duncan to wear a cape in the open-air vehicle because of the cold weather, but Duncan would only agree to wear the scarf. As they departed, Duncan reportedly said to Desti and some companions, "Adieu, mes amis. Je vais à la gloire!" ("Farewell, my friends. I go to glory!"); but according to American novelist Glenway Wescott, Desti later told him that Duncan's actual last words were, "Je vais à l'amour" ("I am off to love"). Desti considered this embarrassing, as it suggested that she and Falchetto were going to her hotel for a tryst. Probably one of the nastier ways to go.
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Jun 8, 2015 08:47
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Helios Grime posted:That's boring, he'll just use it like a regular saw. 
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Jun 8, 2015 08:47
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Jun 8, 2015 11:45
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I wonder if the first response to that from the club/performance owner was to put the girl on a scale and then blame her for going over the (unlisted except in their private files) rated weight.
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Jun 8, 2015 13:19
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http://www.reddit.com/r/OSHA/comments/39173q/standing_on_back_side_of_aluminum_ladder_with/ I believe this is a Bitcoin mining facility in china. Overhead power appears to be - 240/400V on bare, exposed busbars. Some places have exposed busbars, especially things like cranes in high-bays, but this is for some significant power distribution - I'm not sure if this sort of thing would be allowed in the states. China color code: A - Yellow B - Green (WTF?!) C - Red Neutral - Blue Ground - Green/Yellow Someone in the OSHA Reddit this was from said those bars were rated to carry around 3200A (seems high to me). So you might have a tremendous amount of fault energy available there should something go wrong at the bus or at one of the connections tapping off from the bus, unless each tap has something like a fuse that can handle big fault currents. There was another photo that showed two sets of two meters reading 240V, 3200A. Only 2.2 megawatts. (400*3200*1.73) Three-Phase fucked around with this message at 23:11 on Jun 9, 2015 |
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Jun 9, 2015 23:01
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Don't forget about the guy who calculates that they're producing something like 32 tons of CO2 per bitcoin mined. 
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Jun 10, 2015 19:38
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Three-Phase posted:http://www.reddit.com/r/OSHA/comments/39173q/standing_on_back_side_of_aluminum_ladder_with/ I'd never heard of busbars before this, but why would you ever want exposed electrical current - like ever?
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Jun 10, 2015 19:54
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C.M. Kruger posted:Don't forget about the guy who calculates that they're producing something like 32 tons of CO2 per bitcoin mined. The energy footprint of mining bitcoins is currently around the entirety of Irelands's yearly energy consumption. https://karlodwyer.github.io/publications/pdf/bitcoin_KJOD_2014.pdf
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Jun 10, 2015 20:00
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The Dollop made a 40+ minute long podcast about Action Park. http://thedollop.libsyn.com/87-action-park
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Jun 10, 2015 20:20
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Three-Phase posted:http://www.reddit.com/r/OSHA/comments/39173q/standing_on_back_side_of_aluminum_ladder_with/ Darth123123 posted:I'd never heard of busbars before this, but why would you ever want exposed electrical current - like ever?
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Jun 10, 2015 20:21
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Uthor posted:The Dollop made a 40+ minute long podcast about Action Park. Got something to listen to when I do night shift at work! I never got to attend Action Park in its heyday because I was 4 when it closed and I live in Florida (though my dad was from NJ), but I'm absolutely fascinated by it and I've read just about everything I can about it. I was pretty disappointed when planning for my vacation that I had two weeks ago and found that Action Park wouldn't reopen until June.
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Jun 10, 2015 20:24
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Jun 11, 2015 02:23
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3x watermark combo
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Jun 11, 2015 02:50
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Uthor posted:The Dollop made a 40+ minute long podcast about Action Park. Action Park was great. I remember watching the Tarzan Swing when I was a little kid. This is what is looks like:  Around the swing and throughout the line there are huge signs saying "DANGER DANGER DO NOT GO ON THE TARZAN SWING UNLESS YOU ARE AN EXPERT SWIMMER THE WATER IS VERY COLD AND YOU WILL DIE" like every 10 feet. Then I saw this one lady grab hold, jump off, and sink like a stone. I also fell off when I was a fat kid doing it for the first time as well. Then I came back as a less fat goon and did it.
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Jun 11, 2015 04:20
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I can save it, I can save it, I shouldn't have tried to save it. Im glad I work with docks and not those tommy gates.
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Jun 11, 2015 06:21
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I'm not exactly sure what's going on here, but I bet it will lead to more fodder for this thread. http://www.npr.org/sections/money/2015/06/11/413406156/a-suit-that-turns-a-person-into-a-robot-sort-of
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Jun 11, 2015 14:07
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That bitcoin mine did add some safety measures.
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Jun 11, 2015 22:11
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CampingCarl posted:That bitcoin mine did add some safety measures. One of the things here - if you were using a real piece of switchgear instead of this cobbled-together (but arguably clean) approach of having the breakers and busbars on a metal frame, you'd probably have better bracing of the busbars themselves. When you buy a piece of switchgear, it usually has a maximum fault current rating. Like 100,000 amps. What that means is when you have a short circuit somewhere, as long as (for a short duration) you have under 100,000 amps flowing into the fault, the gear will physically keep itself together. The stresses there aren't from heat - it's from the massive magnetic fields that can be generated during the fault - fields that can tear apart equipment, warp busbars, etceteras. The busses and cables have to be secured to handle the forces from these faults. Purpose-built, properly engineered equipment, is designed to withstand the magnetic forces during a fault. They are specified based in part off the power supply - how much power in can send into a "bolted fault" (like a metal rod falling between two phases - a fault with very low impedance and extremely high current flow.) Equipment that is just thrown together may not be able to handle a fault should it occur. However, it is arguably orders of magnitude cheaper in a place where human life is far, far cheaper. (Circuit breakers themselves are similar - they have a maximum interruption rating, say 10,000 amps for a tiny 20A breaker. If the source can pump out more than the interruption rating of the breaker in a fault, the breaker may fail catastrophically when trying to interrupt the fault.) TL;DR VERSION: Just watch this. Like that, but with the metal busbars. https://www.youtube.com/watch?v=3dckmSgp1nw Three-Phase fucked around with this message at 23:37 on Jun 11, 2015 |
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Jun 11, 2015 23:33
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Three-Phase posted:it's from the massive magnetic fields that can be generated during the faul could it be strong enough to pull all of the mining boxes off the shelf?
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Jun 11, 2015 23:42
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Jun 12, 2015 02:18
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Every time I see this I'm always amazed at how quickly that driver manages to move his rear end out of the tow truck.
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Jun 12, 2015 02:21
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EMILY BLUNTS posted:could it be strong enough to pull all of the mining boxes off the shelf? I doubt it. 
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Jun 12, 2015 02:41
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