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Post by Deleted on Dec 23, 2020 15:18:41 GMT
Notice Alert Aire & Calder Navigation Main Line Location: Pollington Lock and Goole Caisson Starts At: Lock 13, Pollington Lock Ends At: Goole Pipebridge Sunday 20 December 2020 14:30 until Monday 4 January 2021 23:59 Type: Navigation Closure Reason: Structure failure ________________________________________ Update on 23/12/2020: On the 22nd December the team on site placed around 150 tonne bags of stone on either side of the breach hole and this slowed the flow of water leaving the canal. The plan for the 23rd December is to continue with this work, with the helicopter placing probably around another 100 bags of stone, to shore up the hole. Once enough have been placed we will start to place clay around the bags to create a water tight seal and depending on how works proceed today, this could be later today or tomorrow. We have taken the decision to keep the navigation closed until January 4th as a precaution. Clay around the bags? Now whereβs me cowboy boots ππ
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Post by Deleted on Dec 23, 2020 15:46:40 GMT
Yeah using clay to seal the canal bed whatever next
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Post by TonyDunkley on Dec 23, 2020 19:12:25 GMT
Notice Alert Aire & Calder Navigation Main Line Location: Pollington Lock and Goole Caisson Starts At: Lock 13, Pollington Lock Ends At: Goole Pipebridge Sunday 20 December 2020 14:30 until Monday 4 January 2021 23:59 Type: Navigation Closure Reason: Structure failure ________________________________________ Update on 23/12/2020: On the 22nd December the team on site placed around 150 tonne bags of stone on either side of the breach hole and this slowed the flow of water leaving the canal. The plan for the 23rd December is to continue with this work, with the helicopter placing probably around another 100 bags of stone, to shore up the hole. Once enough have been placed we will start to place clay around the bags to create a water tight seal and depending on how works proceed today, this could be later today or tomorrow. We have taken the decision to keep the navigation closed until January 4th as a precaution. Clay around the bags? Now whereβs me cowboy boots ππ Probably somewhere in the Goole area, . . being worn by the C&RT engineer who's in charge of the job !
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Post by Deleted on Dec 23, 2020 19:17:12 GMT
Clay around the bags? Now whereβs me cowboy boots ππ Probably somewhere in the Goole area, . . being worn by the C&RT engineer who's in charge of the job ! Thieving basted, I should have guessed as much. I bet his previous occupation was a bingo caller, and it was him I met at cosgrove in the summer. Canβt believe the basted nicked me boots.
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Post by TonyDunkley on Dec 23, 2020 19:53:02 GMT
Yeah using clay to seal the canal bed whatever next It isn't the use of clay that's being questioned, you idiot, . . it's the placing of it in relation to, and after, the bulk stone and aggregate that's wrong.
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Post by JohnV on Dec 23, 2020 19:58:45 GMT
I have a question ...... puddled clay is used to make things waterproof ..... but how the hell do you puddle it ...... when it's underwater ?
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Post by Deleted on Dec 23, 2020 19:58:49 GMT
So how would you seal up the gaps?
Obviously at some point this is going to need proper heavy duty thick very deep bank protection piling but is clay all that terrible initially?
I don't think it's for making the waterway navigable, more as a "stop-gap" measure.
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Post by Telemachus on Dec 23, 2020 20:00:36 GMT
Good aerial photo of the breach From yorkpress.co.uk Hmmm, looks like a lot of water outside the canal and yet the canal level has not dropped that much. There really is a lot of water that could still leak out!
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Post by Deleted on Dec 23, 2020 20:03:29 GMT
Good aerial photo of the breach From yorkpress.co.uk Hmmm, looks like a lot of water outside the canal and yet the canal level has not dropped that much. There really is a lot of water that could still leak out! Maybe it's worth throwing some clay around the bags of stones to help reduce the leakage. Or shall we see if we can get hold of shit loads of ash from people's fires.
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Post by JohnV on Dec 23, 2020 20:07:30 GMT
Good aerial photo of the breach From yorkpress.co.uk Hmmm, looks like a lot of water outside the canal and yet the canal level has not dropped that much. There really is a lot of water that could still leak out! It's large section of big canal but there is also quite a big resevoir attached which has no way of being disconnected from the canal
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Post by TonyDunkley on Dec 23, 2020 20:20:29 GMT
I have a question ...... puddled clay is used to make things waterproof ..... but how the hell do you puddle it ...... when it's underwater ? It's 'puddled' before it's placed, John, which is simply working/kneading it with enough water added to make it pliable. These days it can be done with a variety of machinery - a JCB or even a tractor with a bucket attachment - but the method used back when the canals were first being constructed was that the bottom of the newly dug length of canal was covered with thick layer of 'as dug' clay which was then wetted down as necessary before driving herds of cloven hoofed animals (cattle, pigs, sheep, goats) up and down it to turn it into a nice sticky waterproof mass, . . or mess !
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Post by Deleted on Dec 23, 2020 23:39:25 GMT
Yeah using clay to seal the canal bed whatever next It isn't the use of clay that's being questioned, you idiot, . . it's the placing of it in relation to, and after, the bulk stone and aggregate that's wrong. And there was me thinking its a stopgap. Ah well.
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Post by TonyDunkley on Dec 24, 2020 0:37:34 GMT
It isn't the use of clay that's being questioned, you idiot, . . it's the placing of it in relation to, and after, the bulk stone and aggregate that's wrong. And there was me thinking its a stopgap. Ah well. It possibly is being used as a temporary measure, but whether permanent or temporary, slinging a load of rocks down a hole in the canal bank between two lines of sheet piling followed by some clay on top of the stone isn't the the right way to go about the job. In any case, plugging the hole that can be seen in all the published photo's probably won't achieve anything. I think the water that's running out into the dyke/land drain from the visible hole is coming from several yards further along where the canal bed has blown out between the upper part of the culvert and the bottom ends of some shortened Larssen piles that will have been driven directly over the top of the culvert.
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Post by Deleted on Dec 24, 2020 0:54:54 GMT
And there was me thinking its a stopgap. Ah well. It possibly is being used as a temporary measure, but whether permanent or temporary, slinging a load of rocks down a hole in the canal bank between two lines of sheet piling followed by some clay on top of the stone isn't the the right way to go about the job. In any case, plugging the hole that can be seen in all the published photo's probably won't achieve anything. I think the water that's running out into the dyke/land drain from the visible hole is coming from several yards further along where the canal bed has blown out between the upper part of the culvert and the bottom ends of some shortened Larssen piles that will have been driven directly over the top of the culvert. Based on what (apart from a hatred of anything CRT do or say)? Also its 'photos' not 'photo's'.
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Post by TonyDunkley on Dec 24, 2020 4:02:04 GMT
Question on CWDF re. A & C breach at New Bridge : --
David Mack
11819 posts Gender:Male Boat Name:Belfast 115
Posted 3 hours ago
"How would competent experienced lengthsmen have seen an imminent failure of the canal bed before it happened?"
Answer : --
By knowing an awful lot more about canal bank and bed leaks, and general maintenance, than this this prick does !
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