The answers to ordinary problems are obvious. I only ask about unusual problems, and there's usually someone here with experience in that field. There's an earthquake machine here that keeps wearing out and needs redesigning. Any experts in that?
Not me! The guy that stabilised the leaning tower of Pisa lives in the village and we have a Vulcanologist but I expect they are busy:-)
regards
>
Yeah but, that doesn't fix the OPs problem which I believe is down the to way Google groups does things. (Wrong encoding or some such reason).
Tim
Nothing really. See below:-)
Well it works fine on my computer using OE and OE quotefix. I have just clicked reply to the OPs post and all the >s were there.
If that happened, so would all the fishies.
Wier's your problem?[1]
What side of the wier is the fault? Upstream or downstream? How deep? Could you divert some of the flow across the part of the wier you're not working on?
[1]Sorry, couldn't resist ;)'tother Jonathan
er to go away.
The problem is on the upstream side of the weir, which is about 3ft deep. I suspect some sort of coffer dam is the answer as you suggest, diverting the water elsewhere. I shall have to experiment with sandbags and a tarpaulin.
jonathan
Ongoing photos would be a useful and instructive treat for the group.
JGH
Are you wanting to reinforce the structure, or just plug the crack? If the latter, then I'd get a bag of fullers-earth-based cat litter (Lidl do it) and mix some into a thick sticky paste with water, and trowel/smear it into the crack. The water pressure should carry it further in and seal it. Keep applying until leak stops. Many ponds, docks, reservoirs etc. are made watertight with fullers earth in this way. As onetap said, 'worked for IKB'.
That's how they work, dopey.
You get a series of wet spells every 6 years, then some Blocking Highs later, there you have it the subteranean wier plons offline and you end up with a swarm and that might even lead into a panphreatic experience.
And the antique is clay in clay packaging.
From the Wikipedia:
The excavation was also hazardous. The tunnel flooded suddenly on 18 May 1827 after 549 feet (167 m) had been dug. Isambard Kingdom Brunel lowered a diving bell from a boat to repair the hole at the bottom of the river, throwing bags filled with clay into the breach in the tunnel's roof.
I wonder why he needed to wrap the clay in bags? Waterproofing perhaps? Reinforcement? Ease of placement?
Are you talking about real earthquakes? I'm talking about a machine that simulates an earthquake for a room full of people, since we don't actually have detectable earthquakes where I live.
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