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Post by delaplume on Apr 16, 2019 3:09:24 GMT
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Post by ettingtonliam on Apr 16, 2019 16:55:56 GMT
Took me back to the 1970s and my involvement with the design and construction of Humber Bridge, which exceeded Golden Gate's record for the longest single span in the world, but wasn't as tall or as long overall. Other differences were/are that Humber has concrete towers instead of GG's steel ones, and has an aerofoil steel box deck instead of GG's lattice girder design. The method of spinning the cables looked identical. but I'm glad we had modern concrete batching plants and concrete pumps to replace those wheelbarrows!
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Post by delaplume on Apr 16, 2019 19:49:07 GMT
There's also a similar film showing the construction of the Forth Road Bridge ( Mk. 1 as it were ) ---- the main appeal being that it was done entirely by an amateur film maker of the day........50 years later it was shown on the BBC and is worth seeing...
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Post by simplyloco on Apr 16, 2019 22:06:09 GMT
I was privileged to watch the construction of the first Severn bridge from my barrack room window at the Army Apprentice College Chepstow. I arrived at 15 years old in 1963, bad winter that, and the concrete anchors had just been installed. The two towers were quickly erected, and I remember sailing down the Bristol Channel in a 14 ft dayboat, and looking back to see the towers 'off the vertical',reflecting the curvature of the earth and also positioned to take the predicted load. The spinning of the overhead cables was fascinating, and took forever, and when they started winching up the aerodynamic deck sections - made up at a site upriver on the River Wye - the whole thing was quite magical. A fantastic example of British engineering. Where did that go...? I have never paid to go across it though... John
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Post by ettingtonliam on Apr 17, 2019 4:19:56 GMT
John The curvature of the earth bit is negligible, but suspension bridge towers are pulled backwards by a carefully calculated amount before spinning the cables starts, so that when the cables are complete and the deck sections in place, the towers end up vertical. I've forgotten the figure for Humber now, but it was of the order of a metre or so.
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Post by delaplume on Apr 22, 2019 3:45:23 GMT
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Post by ettingtonliam on Apr 22, 2019 6:46:15 GMT
Sorry Alan, that won't open, not for me anyway.
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Post by delaplume on Apr 22, 2019 8:50:09 GMT
Sorry Alan, that won't open, not for me anyway. Try "clik and drag" to get a blue highlighter --- then Right Clik on}---"Go to Vimeo......." This should bring it on-screen.. I've tested it 3 times and it works ok here..
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Post by ettingtonliam on Apr 23, 2019 0:06:13 GMT
No, still nothing, says page cannot be found.
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peteh
Statesman
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Posts: 760
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Post by peteh on Apr 23, 2019 1:54:01 GMT
I'm also getting the 'page not found'
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Post by delaplume on Apr 23, 2019 8:38:53 GMT
sorry Gents-------don't know what else to suggest ?.......I've just tried again and once again have been successful.....I've lifted this from the opening sequence}-----------"60 minute documentary on the building of the Forth Road Bridge - Screened September 2014 BBC1 Scotland / BBC Four".
Maybe if you look on the BBC site it might be archived ??
PS}---- Give this a try}------- vimeo.com/channels/1010566
It's a Vimeo site for Sarah Howitt and you'll have to scroll down to the third entry....
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peteh
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Post by peteh on Apr 23, 2019 13:33:51 GMT
That worked thanks !
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Post by ettingtonliam on Apr 23, 2019 19:18:47 GMT
Yes, worked for me too. Thanks Alan for finding that. Some of those cranes of Howards we used on Humber in the 1970s, although they were pretty ancient by then, especially the ones with the wooden cabs. Recognised a couple of chaps I worked with, too.
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Post by delaplume on Apr 23, 2019 22:17:28 GMT
I bet the Chinese equivalent to-day don't get their sox washed by the Admin Secretary !!
Have a look at 48:20 ----- what are those 4 aircraft ??
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Post by ettingtonliam on Apr 23, 2019 22:50:13 GMT
We wouldn't have dared, even in the 1970s! And the impression I got was that she agreed!
Sorry, I forgot, this isn't model engineering.
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Post by delaplume on Apr 23, 2019 22:55:57 GMT
We wouldn't have dared, even in the 1970s! And the impression I got was that she agreed! Sorry, I forgot, this isn't model engineering. True, but it comes under "General Chat" with an Engineering ( Civil ) content... so it's ok..
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Post by ettingtonliam on Apr 23, 2019 23:32:24 GMT
Possibly not OK for the sock washing content.
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peteh
Statesman
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Post by peteh on Apr 24, 2019 1:22:27 GMT
I bet the Chinese equivalent to-day don't get their sox washed by the Admin Secretary !! Have a look at 48:20 ----- what are those 4 aircraft ?? Most reminiscent of Lancasters! bit fuzzy to be sure though. Could just be my bias for Lancs - favorite plane
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Post by delaplume on Apr 24, 2019 23:59:04 GMT
I bet the Chinese equivalent to-day don't get their sox washed by the Admin Secretary !! Have a look at 48:20 ----- what are those 4 aircraft ?? Most reminiscent of Lancasters! bit fuzzy to be sure though. Could just be my bias for Lancs - favorite plane Given the date and location ( S/E Scotland ) I thought Avro Shackleton more likely ??
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peteh
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Post by peteh on Apr 25, 2019 3:41:59 GMT
Yep that could work, last derivation of the Lancaster airframe
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